Honeywell XNX UNIVERSAL Transmitter User Manual

XNX

®

Universal Transmitter

Technical Manual

• Calibration

• Maintenance

• War nings/Faults

• Specications

•

ControlDrawings

• HART

®

Protocol

• Warranty

• Index

•

TableofContents

• SafetyInformation

• Introduction

• InstallationandOperation

XNX Universal Transmitter

Table of Contents

1

Table of Contents

Safety

Warnings

��5

Cautions

��7

Notes

��7

Information

��8

1 Introduction

1�1 Product Description ��10

1�1�1 The XNX

®

Universal Transmitter ��10

1�1�2 20 mA/HART

®

Output ��11

1�1�3 Communications ��11

1�1�4 Certifications ��11

1�1�5 Patents ��12

1�2 Product Overview ��12

1�2�1 Enclosure ��12

1�2�2 Cover ��13

1�2�3 POD ��14

1�3 Options ��14

1�3�1 Local HART ��14

1�3�2 Relays ��14

1�3�3 Modbus ��15

1�3�4 Foundation Fieldbus ��15

1�3�5 XNX Accessories ��15

1�4 The XNX Front Panel ��17

1�4�1 Controls and Navigation ��18

1�4�2 The General Status Screen ��19

1�5 Main Menu ��22

1�5�1 XNX Menu Map ��23

2 Installation and Operation

2�1 Mounting and Location of Sensors ��28

2�1�1 Mounting the XNX

®

Universal Transmitter ��28

2�2 Wiring the XNX Transmitter ��30

2�2�1 General Wiring Considerations ��30

2�2�2 Distance Considerations for Installation��31

2�2�3 POD Connections ��36

2�2�4

4-20mA Output, Common Connections, and Power

Settings ��37

2�2�5

Foundation Fieldbus Wiring ��38

2�2�6 Terminal Block Connections ��38

2�2�7 EC Personality Wiring ��39

XNX Electrochemical Sensor Installation

��40

XNX EC Sensor Remote Mounting Kit

��41

2�2�8 mV Personality Wiring �� 43

2�2�9 IR Personality Wiring ��46

Connecting a Searchpoint Optima Plus or Searchline

Excel

��46

Connecting Generic mA Devices

��47

2�3 Options ��51

2�3�1 Local HART Interface ��51

2�3�2 Relays ��53

2�3�3 Modbus ��53

2�3�4 Foundation Fieldbus ��54

2�4 Powering the XNX for the First Time ��55

2�4�1 XNX Units Configured for EC, mV, and IR

(except Searchline Excel) ��55

2�4�2 LCD and LED Test ��56

2�4�3 XNX IR Units Configured for Searchline Excel ��56

TOC

XNX Universal Transmitter

Table of Contents

2

Table of Contents

2�5 Configuring the XNX Universal Transmitter ��57

Select Language ��57

Set Date & Time ��58

Set mV Sensor Type ��59

Set mA Sensor Type ��60

Range & Alarms��67

Latching / Non-Latching ��69

Set Units ��70

mA Levels ��70

Calibration Interval ��71

✓

Accept New Sensor Type ��72

Beam Block Options ��72

Path Length ��74

Unit ID ��75

Relay Options ��76

Fieldbus Options ��77

Configure Security ��78

2�6 Verifying the XNX Configuration ��79

2�6�1 Test Menu ��79

X

Inhibit ��79

Force mA Output ��80

Force Relays ��81

Alarm/Fault Simulation ��81

2�6�2

?

Information Menu ��83

Alarm/Fault Status ��83

Date & Time ��83

Transmitter Data ��83

?

Transmitter Status ��84

Sensor Data ��85

?

Sensor Status ��85

Gas Data ��85

Range/Alarm Settings ��85

mA Level Settings ��86

Fieldbus Settings ��86

Relay Data ��86

?

Event History �� 87

3 Calibration

3�1 Gas Calibration Menu ��90

3�2 Calibration ��90

3�2�1 Zero and Span Calibration for XNX EC Sensors, mV

Sensors, and Searchpoint Optima ��91

3�2�2 Calibration Procedure ��91

3�2�3 Using the Calibration Cup ��93

3�2�4

Zero and Span Calibration of XNX EC Hydrogen

Sulfide (H

2

S) Sensors ��94

3�2�5 705/705HT Calibrating ��94

3�2�6 Sensepoint/Sensepoint HT Calibrating ��94

3�2�7 Calibrating the Searchpoint Optima Plus ��94

3�2�8

Zero and Span Calibration for MPD Sensors �� 97

3�2�9 MPD Flammable Sensor Operational Life ��98

3�2�10 XNX EC Sensor Operational Life ��98

3�3 Functional Gas Testing (Bump Testing) ��99

3�4 Calibrate mA Output ��100

3�5 Align Excel (Searchline Excel) ��100

3�6 Soft Reset ��101

XNX Universal Transmitter

Table of Contents

3

Table of Contents

4 Maintenance

4�1 MPD Sensor Cartridge Replacement ��104

4�2 XNX

®

EC Sensor Cartridge Replacement ��105

4�2�1 Replacing with the Same Cartridge Type ��105

4�2�2 Replacing with a Different Cartridge Type��106

5 Warnings and Faults

5�1 Warning Messages ��108

5�2 Fault Messages ��113

5�3 Informational Messages ��124

6 Specifications

6�1 Product Specifications ��128

6�2 Sensor Data ��130

6�2�1 Operating and Storage Conditions for Performance

Tested EC Cartridges ��130

6�2�2 EC Sensor Performance Data, Factory Mutual Verified

(see Section 6�3) ��131

6�2�3 EC Sensor Performance Data, DEKRA EXAM verified

(see Section 6�3) ��132

6�2�4 Other EC Sensors ��133

6�2�5 XNX EC Sensor Cross-sensitivity ��135

6�2�6 XNX MPD Sensor Performance Data ��142

6�2�7 EN60079-29-1 Performance Approved Gases for mV

Sensor Types ��143

6�2�8 Other Sensor Performance Data ��143

6�3 XNX Certifications by Part Number Series ��144

6�3�1 Certification Labels ��148

6�4 Product Identification ��151

6�4�1 XNX Universal Transmitter ��151

6�4�2 XNX EC Replacement Sensors ��152

6�4�3 XNX EC Replacement Cells ��153

6�4�4 Multi Purpose Detector (MPD) ��154

6�4�5 XNX Catalytic Bead and IR Replacement Sensor

Cartridges ��154

6�4�6 Accessories/Spares ��155

7 Control Drawings

7�1 XNX UL/INMETRO ��159

7�2 XNX UL/CSA/FM ��162

7�3 Remote Sensor Mount ��164

Appendix A - HART

®

Protocol

A�1 HART

®

Interface ��168

ATEX Conditions for Safe Use of Intrinsically Safe HART

Handheld Devices ��168

A�1�1 HART Sink, Source, and Isolated Wiring ��169

A�1�2 DevComm PC-based HART Interface �� 172

Overview ��172

Functions ��173

A�1�3 Handheld Online Menu ��176

Appendix B - Modbus

®

Protocol

B�1 Modbus and the XNX transmitter ��183

B�2 Modbus Registers ��185

Appendix C - Warranty

Warranty Statement ��191

Index �� 192

XNX Universal Transmitter

Table of Contents

4

Table of Contents

XNX Universal Transmitter

Introduction

5

Safety

Read and understand this manual before installing, operating, or

maintaining the XNX Transmitter. Pay particular attention to the

warnings and cautions below. All of the warnings and cautions

shown here are repeated in the appropriate sections of the

manual.

Warnings

• Installationmustbeinaccordancewiththerecognizedstandardsofthe

appropriateauthorityinthecountryconcerned.

• Accesstotheinteriorofthesensor,whencarryingoutanywork,must

onlybeconductedbytrainedpersonnel.

• Beforecarryingoutanyworkensurelocalregulationsandsite

proceduresarefollowed.Appropriatestandardsmustbefollowedto

maintaintheoverallcertificationofthesensor.

• Toreduceriskofignitionofhazardousatmospheres,conduitrunsmust

haveasealfittingconnectedwithin18inches(45cm)oftheenclosure.

• Toreducetheriskofignitionofhazardousatmosphere,disconnectthe

equipmentfromthesupplycircuitbeforeopeningthesensorenclosure.

Keepassemblytightlyclosedduringoperation.

• NeveropentheXNXenclosureunderpowerunlesstheareaisknownto

benonhazardous.

• Thesensormustbeearthed/groundedforIntrinsicSafety,electrical

safetyandtolimittheeffectsofradiofrequencyinterference.Earth/

groundpointsareprovidedinsideandoutsidetheunit.EMInote

forapplicationsusingshieldedcable:Cableshieldterminations

mustbemadeatthecableglandswithsuitableEMItypeglands.

AvoidterminatingcableshieldsattheEarthgroundluginsidethe

XNXenclosure.Incaseswherewiringisinpipe,ashieldedcableis

notrequired.Theexternalterminalisonlyasupplementalbonding

connectionwherelocalauthoritiespermitorrequiresuchaconnection.

• TakecarewhenhandlingECsensorcellsastheymaycontaincorrosive

solutions.

•

Donottamperorinanywaydisassemblethesensorcells.

• Donotexposetotemperaturesoutsidetherecommendedrange.

• Donotexposethesensortoorganicsolventsorflammableliquids.

• Attheendoftheirworkinglives,sensorsmustbedisposedofin

anenvironmentallysafemanner,inaccordancewithlocalwaste

managementrequirementsandenvironmentallegislation.DoNOT

incineratesensorsastheymayemittoxicfumes.

• Highoff-scalereadingsmayindicateanexplosiveconcentrationofgas.

• Verifyalloutputs,includingdisplay,afterinstallation,afterservice

events,andperiodicallytoensurethesafetyandintegrityofthesystem.

• DonotusetheXNXUniversalTransmitterinoxygen-enriched

atmospheres.Concentrationsdisplayedwillbeadverselyaffectedby

oxygendepletion.

• Afterchangingparameterswithahandhelddevice,verifythatthe

parametersettingsarecorrectatthetransmitter.

• Thefactory-setpasscodesmustberesettopreventunauthorizedaccessto

thetransmitter’smenus.

Warnings: Identifyhazardousorunsafepracticeswhichcould

resultinsevereinjuryordeath.

XNX Universal Transmitter

Introduction

6

• WhenthetransmitterisequippedwiththeoptionalRemoteMountKit,

theremotesensormustbesecurelymountedinafixedposition.The

RemoteSensorkitisnotintendedtobeusedasahand-heldsensor.

• Enclosuresofremotelymountedsensorscontainaluminum.Becareful

toavoidignitionhazardsduetoimpactorfrictionwheninstalledin

Zone1locations.

• Installthejunctionboxaccordingtolocalcodesandmanufacturer’s

requirements.

•

Theenclosuresofremotelymounted705HTsensorscontain

aluminum.Becarefultoavoidignitionhazardsduetoimpactorfriction

wheninstalledinZone1locations.

• PoweroffthetransmitterbeforechangingS3orS4.Bothswitches

mustbesetineitherSourceorSinkpriortoapplyingpower.

• Minimumandmaximumcontrolleralarmlevelsshouldnotbeset

atlessthan10%orgreaterthan90%ofthefullscalerangeofthe

sensor.Limitsare60%LELor0.6mg/m

3

foragencyperformance

certification.

•

Whenconfiguringorcommunicatingwiththetransmitterusingthe

frontpaneldisplays,resumemonitoringbyexitingallmenusand

returningtotheGeneralStatusmenumanually.Notimeoutsare

invoked.

•

WhenselectinganewtargetgasforunitswithaSearchpointOptima

Plus,thesensormustberecalibrated.

• XNXUniversalTransmitterscarryingUL/CSA/FMapprovalsthatare

configuredfordevicesmeasuring%LELwillnotallowadjustmentsto

thefullscalevalue.Therangeisfixedat100%.

• Thereisapotentiallossofsensitivityduringexposuretohigh

concentrationsofH2S.Undertheseconditions,setthecontrolunitto

latchatoverrange.Instandaloneconfiguration,setalarmstolatching.

Whenresettingtheoverrangeoralarm,verifycorrectoperationofthe

transmitter.

• Keepthepasswordsinasecureareatopreventunauthorizedaccess

tothetransmitter.Ifthepasswordsarelost,resettingtheXNX

transmitterwillrequireaservicetechnician.

• WhentheXNXtransmitterisplacedinInhibitMode,alarmsare

silenced.Thiswillpreventanactualgaseventfrombeingreported.

InhibitModemustbelimitedtotestingandmaintenanceonly.Exit

InhibitModeaftertestingormaintenanceactivities.

• Honeywellrecommendsperiodicbumptests(every30daysorin

accordancewithcustomersiteprocedures)tothesensortoinsure

properoperationandcompliancewiththefunctionalsafetyratingof

theinstallation.

• Assometestgasesarehazardous,exhausttheflowhousingoutlettoa

safearea.DonotusetheXNXUniversalTransmitterinoxygen-enriched

atmospheres.(Inoxygen-enrichedatmospheres,theelectricalsafetyis

notgiven.)

• Exposuretodesensitizingorcontaminatingsubstancesor

concentrationscausingoperationofanyalarmmayaffectsensor

sensitivity.Followingsuchevents,itisrecommendedtoverifysensor

performancebyperformingafunctionalgastest(bumptest).

• Whenservicingorreplacingsensors,reducetheriskofignitionof

hazardousatmospherebydeclassifyingtheareaordisconnecting

theequipmentfromthesupplycircuitbeforeopeningthesensor

enclosure.Keeptheassemblytightlyclosedduringoperation.

• Takeappropriateprecautionswhenusingtoxic,flammable,and

pressurizedcylinders.

• Delaysresultingfromtransmissionerrorsbetweensensorand

transmitterextendresponsetimesT90bymorethanone-third.The

perioduntilfault

indicationis10seconds

.

•

TheHARTinterfaceissubjectofthisEC-typeexaminationcertificate

onlyforthepurposeofconfigurationandmaintenance.

XNX Universal Transmitter

Introduction

7

• Theoptions“Modbusinterface”and“FoundationFieldbusinterface”are

notsubjectofthisEC-typeexaminationcertificate.

• Long-termexposure(>20minutes)toconcentrationsexceedingthe

fullscalerangeoftheH2Ssensortype2cancauseittolosesensitivity.

Themeasuredvaluemaydecreaseeventhoughhighlevelsoftoxic

gasarestillpresent.Ifsuchconditionscanoccur,setthecontrolunit

tolatchatoverrange.Instandaloneoperation,setalarmstolatching.

Whenresettingtheoverrangeoralarm,verifycorrectoperationofthe

transmitter.

Hazardous Location Installation Requirements

(UL/CSA)

• Toreduceriskofignitionofhazardousatmospheres,conduitrunsmust

haveapourglandinstalledwithin18inches(457mm)ofenclosure.

• All¾inchNPTconduit,stoppingplugsandadaptersmustbeinstalled

with5¼threads(minimum)engagedtomaintainExplosionProofrating.

• StoppingPlugssupplied(HoneywellPartNumber1226-0258)are

approvedforuseONLYwiththeXNXUniversalTransmitter.

• ForunitsfittedwiththeOptionalRelayModule:RelayContactRatings

are250VAC5A,24VDC5AResistiveLoadsOnly.

• Terminalblockscrewsshouldbetightenedto4.5lb/in(max).

• ReferenceXNXControlDrawing1226E0402or1226E0454for

additionalinformationregardingISfunction(LocalHARTandEC

Personality).

Hazardous Location Installation Requirements

(ATEX)

• Readandunderstandthismanualpriortoinstallationanduse.

• UseonlycertifiedM25cableglandsforinstallation.

• ShieldedarmoredcableisrequiredforCEcompliance.

• Special Conditions for Safe Use

• ThefollowingappliestotheHARTBarrierintrinsicallysafecircuits:

ForinstallationsinwhichboththeCiandLioftheintrinsically

safeapparatusexceeds1%oftheCoandLoparametersofthe

associatedapparatus(excludingthecable),then50%ofCoand

Loparametersareapplicableandshallnotbeexceeded,i.e.theCi

ofthedeviceplustheCofthecablemustbelessthanorequalto

50%oftheCooftheassociatedapparatus,andtheLiofthedevice

plustheLofthecablemustbelessthanorequalto50%oftheLo

oftheassociatedapparatus.

• ForcircuitsconnectedtotheECbarrierinwhichthecapacitance

andinductanceexceed1%ofthepermittedvalues,thenthe

maximumpermittedcapacitanceislimitedto600nFforgroupIIC

and1uFforgroupIIIC.

• TheconnectiontotheHARTcircuitshallberatedaminimumofIP

6X.

Cautions

Cautions: Identifyhazardousorunsafepracticeswhichcouldresultin

damagetopropertyortotheproduct.

Notes

Notes: Additionalusefulinformation.

XNX Universal Transmitter

Introduction

8

Information

Honeywell Analytics assumes no responsibility for equipment

that is not installed and used following the procedures in the

Technical Manual.

The reader of this manual should ensure that the appropriate

equipment has been installed. If in doubt, contact Honeywell

Analytics.

Every effort has been made to ensure the accuracy of our

documents, however, Honeywell Analytics can assume no

responsibility for any errors or omissions in its documents or

their consequences. Honeywell Analytics greatly appreciates

being informed of any errors or omissions that may be found

in the contents of any of its documents. For information not

covered in this document, or if there is a requirement to send

comments/corrections about this document, please contact

Honeywell Analytics using the contact details given on the back

cover of this document.

Honeywell Analytics reserves the right to change or revise the

information supplied in this document without notice and without

obligation to notify any person or organization of such revision

or change. If information is required that does not appear in

this document, contact the local distributor/agent or Honeywell

Analytics.

XNX

®

is a registered trademark of Honeywell International.

HART

®

is a registered trademark of the HART Communication

Foundation.

Modbus

®

is a registered trademark of Schneider Automation Inc.

FOUNDATION

TM

is a trademark of Fieldbus Foundation.

XNX Universal Transmitter

XNX Universal Transmitter Technical Manual

9

1 Introduction

XNX Universal Transmitter

Section 1 - Introduction

10

1.1 Product Description

1.1.1 The XNX

®

Universal Transmitter

The XNX Universal Transmitter is a comprehensive gas detection

system designed to operate in hazardous locations

1

and utilize

multiple sensor technologies, catalytic bead, electrochemical

(EC), or infrared (IR) to detect toxic gases, ammable gases, and

oxygen depletion gas hazards. Each technology has a dedicated

personality board.

Catalytic bead technology is used with the XNX mV personality

board. Catalytic bead sensors respond to a wide variety of

combustibles so are typically used for ammable gas detection.

Electrochemical technology is used with the XNX

electrochemical board. EC sensors measure toxic gases in

low concentrations. The XNX EC sensors employ the patented

Reex™ cell fault diagnosis routine. Reex™ checks for cell

presence, cell dry-out, and cell open or short circuit. Reex™ is

automatically initiated by the transmitter at eight-hour intervals.

It is also initiated on power up or sensor exchange. In the

event of a cell failing this test, a sensor fault code is displayed.

Reex™ diagnostics occur in the rst minutes of the power up

sequence.

Infrared technology is used with the XNX IR board. IR sensors

optically absorb gases that fall into the infrared spectrum.

For additional information about any of the three sensor types,

refer to the applicable data sheet for the supported sensor in

Figure 1.

The XNX Universal Transmitter also allows for an optional

1

There are three main types of gas hazards: ammable, toxic, and asphyxiant. A am-

mable gas hazard is one in which there is a risk of re and/or explosion (e.g., a situation

in which a gas such as methane, butane, or propane is present). A toxic gas hazard is

one in which there is a risk of poisoning (e.g., a gas such as carbon monoxide, hydrogen

sulde, or chlorine is present). An asphyxiant hazard would include a risk of suffocation

through oxygen deciency. (Oxygen can be consumed or displaced by another gas.)

communication board. There are three types of boards:

relay, Modbus

®

, or Foundation

TM

Fieldbus. See Section 1.1. 2

Communications for additional information.

.

705

705HT

Sensepoint

Sensepoint HT

XNX Universal Transmitter

Multi-Purpose

Detector (MPD)

Catalytic Bead

Infrared Flammable

Infrared Methane/CO

2

CL

2

H

2

NH

3

O

2

ClO

2

H

2

S

NO

PH

3

CO HF

NO

2

SO

2

Personality Sensor Type Supported Sensors

IR Point and Open-Path Infrared Searchpoint Optima Plus, Searchline Excel

mV Flammable and Toxic

705, 705HT, Sensepoint, Sensepoint HT, MPD

(Catalytic Bead Flammable, IR Flammable and IR CO

2

)

XNX EC Toxic and O

2

Sensing

Electrochemical sensors, with Hot Swap, pre-calibrated

through Intrinsically Safe (IS) barrier

P

e

r

s

onal

i

t

y

S

enso

r

T

ype

y

T

S

u

ppo

r

ted

S

ens

o

r

s

Searchline Excel

Searchpoint Optima Plus

Figure 1. XNX Universal Transmitter and supported sensing technologies

The XNX Universal Transmitter relies on 4-20mA output, refreshed

at least every two seconds (once per second is typical), in which

the output is proportional to the gas concentration.

XNX Universal Transmitter

Section 1 - Introduction 11

1.1.2 20 mA/HART

®

Output

All XNX Transmitters provide a 20mA Current Loop with HART

Source (3-Wire) or Isolated (4-Wire) electrical interface based on

installation requirements.

The 20mA current loop output provides an analog indication

of special states, a proportional output to gas concentration

and over range indication per the table below. In the event of

a simultaneous alarm and fault, an alarm condition will always

override a warning state.

Output Description* Notes

1.0 mA Fault

Special

State

Indication

2.0 mA

Warm-up

Inhibit

Bump Test

Calibration

3.0 mA Warning

4-20 mA Gas Concentration

21 mA Over Range

*Alarm conditions always take priority over faults and warnings.

HART Protocol provides digital communications with the XNX

Diagnostics. (See Appendix A HART Protocol for additional

information)

1.1.3 Communications

The XNX Universal Transmitter is registered

with the HART Communication Foundation.

The transmitter uses HART over 4-20mA as the standard

communications protocol. Additional optional communication

interfaces are available: relay communication, Modbus, or

Foundation Fieldbus. Each communication option has a

dedicated option board. For additional information, refer to

Section 1.3 Options.

1.1.4

installation in Class I, Division 1, Groups A, B, C and D Hazardous

Locations. FM Approvals evaluation includes Class I, Zone

not cover daisy-chained XNX combustible gas transmitters, the

use of HART, Modbus, or Foundation Fieldbus protocols for

combustible gas performance. HART, Modbus, or Foundation

Fieldbus protocols can be used only for data collection or record

keeping with regards to combustible gas. The EC cartridge

2

and

standards.

European Community ATEX Directive and the prescribed

protection methods for installation in Potentially Explosive

Atmospheres.

and INMETRO approved (TÜV Rhineland) for compliance with

both U.S. and Brazilian standards.

See Section 6.2 for additional information on applicable

approvals by part number and Section 6.2.1 for marking.

2

“Cartridge” and “sensor” are used interchangeably in this document.

XNX-BT**.***** and XNX-UT**.***** versions are UL classified

XNX Universal Transmitter

Section 1 - Introduction

12

1.1.5 Patents

This table shows details about XNX-related patents.

Patents Applicable to the XNX Universal Transmitter

Patent

Number

Description Application

6,123,818 Reflex patent Implemented in XNX

6,251,232 Reflex patent Implemented in XNX

6,351,982 Flammable sensor housing XNX accepts this sensor

6,395,230 Pellistor Sensor used in XNX

7,225,661 Gas calibration adapter Applicable to XNX

7,716,962 Method of gas calibration Used to calibrate XNX ECC cartridges

1.2 Product Overview

The XNX transmitter is comprised of the main parts shown

below.

Cover

Pod

Intrinsically Safe (IS) Barrier for

Optional Local HART Interface

Intrinsically Safe (IS) Barrier for

Electrochemical Sensor Interface

(when equipped)

Enclosure

Figure 2. XNX Exploded View

A complete description of XNX accessories can be found in

publication 1998-0807 XNX Universal Transmitter Parts List.

1.2.1 Enclosure

Available in either Stainless Steel or Aluminum, with 3/4” NPT

(UL/CSA or UL/ INMETRO) or M25 (ATEX/IECEx only) threaded

cable/conduit ports, the XNX Universal Transmitter enclosure is

explosion-proof and suitable for use in -40°F to +149°F (-40°C to

+65°C) operating conditions. A 5-coat marine nishing process

provides the highest degree of corrosion protection. For more

information on performance specications, see Section 6 -

Specications.

The XNX enclosure is equipped with ve threaded cable/conduit

ports providing functional and exible congurations based on

sensor and option choices. See Figure 5 for cable/conduit port

assignments and restrictions.

Stopping plugs (HA PN# 1226-0257 or 1226-0258) have been

provided to seal unused cable/conduit ports and have been

Agency evaluated/approved for use with the XNX enclosure

only. The number of stopping plugs varies among available

congurations.

Caution: The stopping plugs are for use only with the XNX Transmitter

and should not be used with any other device.

Mounting lugs integral to the XNX enclosure allow easy instal-

lation on a at surface or 2”-6” (50-150mm) diameter pipe with

the optional Pipe Mount Kit or Ceiling Mount Bracket Kit.

XNX Universal Transmitter

Section 1 - Introduction

13

1.2.2 Cover

The transmitter cover is supplied in the identical material

specied for the enclosure.

Cover Lock Screw, requires a

2mm hex key (included)

Tempered Glass Window

Cover

Figure 3. XNX components

A tempered glass window requires the use of the supplied magnetic

wand/screwdriver to activate the four user interface switches that

are located on the front of the display module. This allows for non-

intrusive setup and operation.

A locking screw integrated into the cover provides positive

locking that can be removed by using the supplied 2mm hex

key

3

.

Figure 4. Magnetic Wand/Screwdriver

Note: When attaching the cover or stopping plugs, coat the threads

to prevent corrosion.

3

See the

XNX Universal Transmitter Parts List

(document 1998-0807) for a de-

scription of all of the parts that are shipped with the transmitter.

While relay wiring can use any available

cable/conduit port in the XNX enclosure,

do not use the same cable/conduit port for

both relay reset and relay signal lines to

avoid electrical noise.

Option Position

Local HART Option B

XNX Electrochemical Sensor - Local/Remote C

MPD, 705 Series, Sensepoint Series C

Searchpoint Optima Plus A or E

Searchline Excel Typically C

Remote Sensor Connection (except EC ) Any remaining

Searchpoint Optima Plus - Remote Any remaining

Modbus Any remaining

Relays Any remaining

Power Any remaining

Figure 5. XNX Universal Transmitter Cable/Conduit Port Assignments

XNX Universal Transmitter

Section 1 - Introduction

14

1.2.3 POD

The POD (Personality, Options, and Display) encloses circuit

boards for the personality module, optional interfaces, and

display.

The personality module, or circuit board, determines the

transmitter behavior based on the sensor type attached to

the transmitter (electrochemical cell, catalytic bead sensor, or

infrared) and provides the necessary interface. Connection to the

attached sensor is made through the sensor connector accessed

via a slot in the POD housing.

The optional communication boards vary depending on the

option selected when ordered. Only one of the three available

interface options (relays, Modbus, or Foundation Fieldbus) can

be attached to the XNX transmitter.

Figure 6. POD, exploded View

1.3 Options

1.3.1 Local HART

Available with any sensor technology or personality, an external

access to the HART interface in the XNX transmitter is provided.

An intrinsically safe (IS) barrier inside the transmitter gives the

user full control using a hand-held interrogator for programming

and conguration. The external interface is installed in the lower

left cable/conduit port of the transmitter and is intrinsically safe.

For more information, see Appendix A - HART Protocol.

Figure 7. XNX Universal Transmitter with HART Interface IS Barrier

1.3.2 Relays

The relay option (XNX-Relay) provides 3 form “C” (SPDT)

normally open/normally closed (NO/NC) contacts for alarm

and fault indication. A remote reset input is provided (TB4).

Momentarily closing the the circuit between the pins of TB4

performs the same function as the Reset Alarms & Faults

command.

The XNX transmitter has three relays: relay 1 is for alarm level

1, relay 2 is for alarm level 2, and relay 3 is for faults and special

XNX Universal Transmitter

Section 1 - Introduction

15

states. Two alarm levels can be set, allowing, for example, a level

1 alarm for the immediate area when a certain gas concentration

is detected and a plant-wide level 2 alarm when a greater gas

concentration is detected.

The maximum refresh rate of the relays is 2 seconds. See Set

Alarm Values for more information.

1.3.3 Modbus

The optional Modbus interface allows the XNX to connect to

a bus of devices and transmit data to PLCs or controllers.

(For more information, see the Modbus

Protocol Manual).

Connections to the XNX are made through a pluggable terminal

block on the Modbus interface circuit board. Modbus RTU

protocol uses ASCII/Hex protocols for communication.

Note: POD options are either relay, Modbus, or Foundation Fieldbus.

1.3.4 Foundation Fieldbus

Foundation Fieldbus is a digital communication system which

supports several types of messages. Unlike many traditional

systems which require a set of wires for each device, multiple

Foundation Fieldbus devices can be connected with a

single set of wires. Foundation Fieldbus overcomes some

of the disadvantages of proprietary networks by providing a

standardized network for connecting systems and devices.

1.3.5 XNX Accessories

Pipe Mount Kit

The Pipe Mount kit (1226A0358) allows the XNX to be mounted

to pipe from 2”-6” (50-150mm) in diameter. The kit includes the

pipe mount bracket, two carriage bolts, nuts, and lock washers.

Figure 8. Pipe-mounted XNX Transmitters

Calibration Gas Flow Adapter

The calibration gas ow adapter is used to apply calibration

test gas to the sensor. It attaches to the bottom of the sensor

and can be tted without removing the weatherproof cover. See

Section 3 - Calibration for further details on gas calibration.

Sensor Flow Adapter P/N

XNX EC S3KCAL

MPD 1226A0411

Sensepoint 02000-A-1645

705 00780-A-0035

XNX Universal Transmitter

Section 1 - Introduction

16

Weatherproof Cap

The weatherproof cap protects XNX sensors from harsh weather.

Sensor Weatherproof Cap P/N

XNX EC

Included

MPD

02000A1640

Sensepoint

02000-A-1640

705

00780-A-2076

MPD-*TCB1

SPXCDWP (included)

Remote Sensor Mounting Kit for XNX EC Sensors

The remote sensor mounting kit

(S3KRMK) allows XNX EC sensors to

be remotely mounted via an IS cable

kit, up to 50 feet (15 meters) from the

transmitter. The kit includes 50 feet of

shielded cable, cable glands, and

remote terminal box. The cable can be

cut to the required length then terminated at the remote terminal

box.

Collecting Cone

The collecting cone improves detection of lighter-than-air gases

such as hydrogen and methane.

Sensor Collecting Cone P/N

XNX EC S3KCC

MPD 02000-A-1642

Sensepoint 02000-A-1642

705 02000-A-1642

Ceiling Mount Bracket Kit

The optional Ceiling Mount Bracket Kit

(1226A0355) allows the XNX Transmitter to be

mounted to the ceiling. The kit includes two

stainless steel ceiling mount brackets, bolts,

and nuts.

Remote Gassing Kit

The Remote Gassing Kit

(1226A0354) enables gas to be

applied remotely for performing

functional response checks (bump

tests). The kit Includes: 50’ Teon

®

tubing, a mounting bracket, a tube

cap, and device adapters in 1/4”

and 1/8” (6.3 mm and 3.2 mm) ID to

attach to bump test ports on the

weatherproof cap of the device.

Duct Mount Kit

1226A0382 MPD Adapter Ring

S3KDMK EC/MPD Duct Adapter Kit

The duct mounting kit (S3KDMK) can

be used with the EC sensor to allow

detection of O

2

, CO, H

2

and H

2

S gases

in ducts. When combined with the

MPD Interface Adapter (1226A0382),

the duct mounting kit can

accommodate the MPD to detect ammable gases in a duct

application. The duct mount kit includes the adapter, gasket and

required fasteners. The MPD Interface Adapter includes only the

adapter and requires the S3KDMK duct mount kit.

XNX Universal Transmitter

Section 1 - Introduction

17

Weather Protector

The Extreme Weather Protector (SPXCDWP) is

designed to protect the sensor from

environmental conditions in outdoor exposure

applications.

1.4 The XNX Front Panel

The XNX Transmitter uses magnetic switches to enable non-

intrusive operation. To activate a magnetic switch, hold the

magnetic end of the screwdriver up to the glass window and

slowly swipe the magnet directly over the shaded area.

For best results, hold the screwdriver as illustrated in Figure 9.

Enter/Accept

Escape/Back

Move Right/Increment Value Move Left/Decrement Value

Switch Actuation

Visual Indicator

Figure 9. Using the magnetic wand

A decal illustrating the proper method for actuating the magnetic

switches is placed on the POD of each transmitter.

XNX Universal Transmitter

Section 1 - Introduction

18

Wand

Instruction

Decal

Figure 10. Operation decal

The switch is actuated by the ux lines between the poles of the

magnet. This actuation method provides the most consistent

response.

A visual indication of the switch actuation will appear in the

lower right corner of the XNX display each time the switch is

activated.

In some menus where displayed values can be changed, the

magnet must be swiped over the switch to cause the numeral on

the display to advance through the available values. Use the

✖

switch to return to a previous menu or eld.

For the purposes of this manual, the instruction to use

✓

,

✖

, or , means to activate the relevant magnetic switch as

described above.

Power LED (green)

Alarm LED (red)

Fault LED (yellow)

Escape

Move Left

Decement Value

Move Right

Increment Value

Switch Actuation

Visual Indicator

Enter/Accept

Figure 11. Front panel display of the XNX transmitter

1.4.1 Controls and Navigation

Command Description

✓

Enter/Accept

The Enter/Accept switch is used to access menus,

accept changes and to answer “yes” to system

prompts.

✖

Escape/Back

The Escape/Back switch is used to return to previous

menus or to answer “no” to system prompts.

Move Left/

Decrement Value

The Left/Decrement arrow is used to move through

menu options or decrement values when entering text

or numbers.

Move Right/

Increment Value

The Right/Increment arrow is used to move through

menu options or increment values when entering text or

numbers.

XNX Universal Transmitter

Section 1 - Introduction

19

1.4.2 The General Status Screen

\

Figure 12. General Status screen

4

The General Status Screen shows the status of the XNX

Transmitter.

Status Indicator

Current Concentration Level

(Numeric)

Alarm 2 Set Point

Alarm 1 Set Point

Current Concentration Le

vel

(Bar Graph)

Full Scale

Concentration Units

Figure 13. General Status screen, normal operating mode

The Normal Operating Mode icon indicates proper operation.

The XNX display also shows the concentration level of the

target gas in two ways. In the rst, a numeric value is shown in

the upper right corner of the display in the units selected (ppm,

%LEL, %VOL). The second concentration display is shown in

the form of a bar graph representing the current concentration

against full scale and in relation to the dened alarm levels. For

more information on setting range and alarm levels, see Section

2.6.2 Range/Alarm Settings. See Section 6.2.2, Section 6.2.3,

and Section 6.2.4 for negative drift and zero deviation values.

4

The LCD screen’s refresh rates are 500 milliseconds (when the LCD heater is off) and 1 second

(when the heater is on).

When a warning is triggered, the warning icon appears and

information is displayed on the General Status Screen. The

information displayed alternates between screens displaying

the gas concentration and the warning code. See Section 5 -

Warnings/Faults for more warning code information.

Warning Code

Warning Icon

Figure 14. General Status Warning detail

If the Fault icon is displayed, a fault condition has been

triggered and the display will alternate between the target gas

concentration and the fault code. See Section 5 - Warnings/

Faults for more fault code information.

Fault Icon

Fault Code

Figure 15. General Status Fault detail

In the event of multiple warnings or faults, the user can view all

messages with the transmitter’s Event History function.

When an Alarm icon

is displayed, the target gas concentration

exceeds one or both preset alarm levels. The General Status

Screen displays the gas concentration and the alarm level

exceeded.

XNX Universal Transmitter

Section 1 - Introduction

20

Target Gas

Concentration

Alar

m Icon

Alarm Level Triggered

Figure 16. General Status Alarm detail

In an over range condition, the alarm icon will display and the target gas

concentration bar graph and alarm setpoints will ash.

Full Scale

Concentration

Alarm Level Triggered

Concentration Bar, Alar

m Setpoints Flash

Figure 17. General Status Over Range detail

Negative values are not displayed and do not appear on the

4-20 mA output, but they are indicated by faults or warnings

when preset thresholds are exceeded. (See zero deviation in

Section 6.1.1)

In addition to the graphic alarm, fault, and warning indicators,

the LEDs on the front panel ash in these patterns based on the

condition:

Condition

LED

1

Red Green Yellow

Alarm 1 Solid

Alarm 2 Flashing

Warning Solid

Fault Flashing

2

Health Flashing

1

The refresh rate of the LEDs is 0.5 second.

2

Special states (Warmup, Inhibit) are not indicated by the Fault LED.

1.4.3 Entering the Menu Structure

Swiping the magnet over the magnetic switch

✓

or

✖

allows the

user to reset faults or alarms, display current settings, or make

adjustments to the device.

Note: If the Easy Reset option is set to Lock, alarms and faults

cannot be reset without logging in or entering a passcode. For more

information, see Section 2.5.1 Configure Security.

Swiping the

✖

or “escape” magnetic switch activates the Alarm

Re-set screen and allows alarms to be silenced and faults to be

reset.

The

✓

switch resets all alarms and faults and returns to the

General Status Screen. Use the

✖

switch to return to the

General Status Screen without resetting the alarms and faults.

Figure 18. Alarm Reset screen

Two authorization levels control access based upon the security

level of the user: Level 1 (routine maintenance) and Level 2

(technician and password administrator). The default passcodes

for both levels are “0000” and must be reset after installation

to control access (see Section 2.5.1 Configure Security). In

general, access to neither security level restricts the user to

viewing the transmitter’s display. If desired, the Easy Reset from

Main Status option

allows alarm and fault resets without requiring

access to either security level.

XNX Universal Transmitter

Section 1 - Introduction

21

Figure 19. Passcode screen

Warning: The factory-set passcodes must be reset to prevent

unauthorized access to the transmitter’s menus.

When the Passcode Screen is displayed, the rst passcode

digit is highlighted. Use the switches to increment or

decrement through the values. Once the correct value is

displayed for the rst digit,

✓

accepts the value and moves to

the next digit or

✖

moves to the previous digit of the passcode.

✓

Figure 20. Entering the passcode

Repeat for each of the remaining digits in the passcode. If the

passcode is not entered correctly, the Invalid Passcode screen

is displayed and the user is returned to the General Status

screen.

Figure 21. Invalid Passcode screen

1.4.4 Displaying Transmitter Information

While in the General Status display, swipe the magnet over the

magnetic switch

to display information about the transmitter.

The General Status display will replace the bar graph in the

lower portion of the screen with the unit’s serial number, the

date and time, and the unit’s part number.

Figure 22. General Status Screen with Unit Information

XNX Universal Transmitter

Section 1 - Introduction

22

1.5 Main Menu

Once the proper passcode has been entered, the transmitter

displays the Main Menu.

Figure 23. The Main Menu

From the Main Menu, a Level 1 user can:

• display the current settings/conguration

• test the transmitter

• calibrate and bump test the transmitter

• congure the unit for language, date and time

The Main Menu consists of these options:

Menu Description

See

Section...

Congure

Provides access to settings to configure the

transmitter and connected devices

2.5.1

Test

Provides access to tools and settings to allow

simulation of gas events to test the system

2.6.1

?

Information

Displays current settings for the XNX transmitter

including optional relays and Modbus

2.6.2

Gas

Calibration

Displays the XNX interface to calibrate sensors

attached directly to the transmitter

3.1

XNX Universal Transmitter

Section 1 - Introduction

23

1.5.1 XNX Menu Map

Status Display

Passcode Display

Main Menu

Alarm/Fault Reset

Display

?

1. Information Mode 2. Test Mode

3. Calibration Mode

4. Configuration Mode

3

6

33

Continued

on page 24

Continued

on page 25

Continued

on page 25

Continued

on page 26

XNX Universal Transmitter

Section 1 - Introduction

24

Information Mode

Alarm/Fault Status

Alarm/Fault

Conrm Alarm/Fault Reset

Reset Alarm/Fault

Date & Time

Transmitter ID, Serial #, Revision

Transmitter Data

Transmitter Status

Sensor Type, Serial #, Revision

Sensor Data

Sensor Status

Gas Name, ID, Range

Gas Data

Range Settings, Alarm Settings

Range/Alarm Settings

mA Level Settings

Relay Settings

5

Relay Settings

5 Optional relay only

Fieldbus Settings

6

Fieldbus Settings

Event History

Increment Next/Previous Event

Increment Next/Previous Hour

Increment Next/Previous Day

Increment Next/Previous Alarm

Increment Next Previous Fault

6

Optional Foundation Fieldbus and Modbus only

XNX Universal Transmitter

Section 1 - Introduction

25

Test Mode

Inhibit

Enable/Disable Inhibit

Force mA Output

Select Current: 0 to 22 mA

Accept

Force Relay

7

Select Relay 1

Select Relay 2

Select Relay 3

Accept

Alarm/Fault Simulation

Alarm 1 Simulation

Alarm 2 Simulation

Warning Simulation

Fault Simulation

7 Optional relay only

Calibration Mode

Gas Calibration

Enter Span Gas Concentration (Oxygen)

Enter Span Gas Concentration (Not Oxygen)

Bump Test

mA Output Calibration

Adjust 4 mA Output

Adjust 20 mA Output

Soft Reset

8

Align Excel

9

8 Searchpoint Optima and Searchline Excel only

9

Searchline Excel only

XNX Universal Transmitter

Section 1 - Introduction

26

Conguration Mode

Select Language

Set Date & Time

Set Date Format

Set Year, Month, Day

Set Hours, Minutes, Seconds

Sensor Type Selection

Set mV Sensor Type

10

Set mA Sensor Type

11

Gas Selection

Changing the Gas or Units Name

Gas Selections and Alarm Limits Based on mV

Sensor Type

Range & Alarms

Set Range

Alarm 1 Type

Alarm 1 Setpoint

Alarm 1 Latching or Non-latching

Alarm 2 Type

Alarm 2 Setpoint

Alarm 2 Latching or Non-latching

Selecting the Numeric Format

Latching/Non-latching

Change Meas. Units

12

mA Output Levels

Change mA for Inhibit

10 Catalytic bead sensor only

11 Searchpoint Optima and Searchline Excel only

12 ECC and mV only

Change mA for Warning

Change mA for Overrange

Change mA for Low Signal

Change mA for Blocked Beam

Set Calibration Interval

Accept New Sensor Type

13

Information screen identifying previous sensor and

new sensor

Screen displays new type and old type

Set Beam Block

14

Select Beam Block Threshold

Select Time to Beam Block

Select Time to Fault

Set Path Length

15

Set New Path Length

Congure Unit ID

Edit ID

Clear ID

Default ID

Relay Options

16

Select A1

Select A2

Fieldbus Options

17

Change Fieldbus Address

Change Fieldbus Speed

Security

Reset and LVL1

LVL1 Code

LVL2 Code

13 Electrochemical and catalytic bead sensors only

14 Searchline Excel only

15 Searchline Excel only

16 Optional relay only

17 Optional Foundation Fieldbus and Modbus only

XNX Universal Transmitter

XNX Universal Transmitter Technical Manual

27

2 Installation and

Operation

XNX Universal Transmitter

Section 2 - Installation and Operation

28

2.1 Mounting and Location of Sensors

Caution: Locate transmitters and sensors in accordance with

relevant local and national legiislation, standards, and codes of

practice.

The placement of sensors should be determined following the

advice of experts having specialist knowledge of gas dispersion,

experts having knowledge of the process plant system and

equipment involved, and safety and engineering personnel. The

agreement reached on the location of sensors should be

recorded. Consider these factors when locating gas sensors:

• possible damage caused by natural events such as rain or

ooding

• ease of access for functional testing and servicing

• how escaping gas may behave due to natural or forced air

currents.

2.1.1 Mounting the XNX

®

Universal Transmitter

The transmitter can be mounted in a number of ways using the

integralmountingtabs.Thetransmittercanbeattachedtoat

wall surfaces or to Unistrut

®

.

With the optional Pipe Mount kit,

the unit can be mounted to pipe of diameter 2” to 6” (50 to

150mm). A ceiling mount bracket kit (1226A0358) is also

available.

Note: Agency certifications require that EC and mV sensors face

down. Optima sensors must be mounted horizontally.

1.67"

42.41 mm

5.6"

124.24 mm

6.00"

15.4 mm

7.75"

196.85 mm

4.48"

113.8 mm

0.625"

15.88mm

2.054"

52.18mm

0.945"

24mm

1.2"

31.75mm

1.768"

44.90 mm

3.176"

80.67 mm

1.768"

44.90 mm

0.55"

14.35 mm

6.138"

158.75mm

Figure 24. XNX Universal Transmitter mounting dimensions and clearances

XNX Universal Transmitter

Section 2 - Installation and Operation

29

Warning: When the transmitter is equipped with the optional

Remote Mount Kit, the remote sensor must be securely mounted in

a fixed position. The Remote Sensor kit is not intended to be used as

a hand-held sensor.

Thetransmitterisconguredwithvecable/conduitportsbuilt

into the housing for wiring and mounting sensors. Figure 25

provides the guidelines to proper installation of the XNX.

While relay wiring can use any

availablecable/conduitportin

the XNX enclosure, do not use

thesamecable/conduitportfor

both relay reset and relay signal

lines to avoid electrical noise.

Option Position

Local HART

®

Option B

XNX Electrochemical Sensor - Local/Remote C

MPD, 705 Series, Sensepoint Series C

Searchpoint Optima Plus A or E

Searchline Excel Typically C

Remote Sensor Connection (except EC ) Any remaining

Searchpoint Optima Plus - Remote Any remaining

Modbus Any remaining

Relays Any remaining

Power Any remaining

Figure 25. XNX Universal Transmitter cable/conduit port assignments

Integral Mounting Lugs

Figure 26. XNX Universal Transmitter mounting lugs

Figure 27. Optional pipe and ceiling mounts

XNX Universal Transmitter

Section 2 - Installation and Operation

30

2.2 Wiring the XNX Transmitter

The XNX transmitter is available in sensor technologies, or

personality options, which support a variety of sensors and

applications. Each of the personalities use dedicated interface

boards. Pluggable terminal blocks are used for easy connection

and service. The personality boards and optional communication

interfaces are enclosed in plastic housings comprising the

electronics POD (Personality, Options, and Display). The

Personality circuit board determines the XNX behavior based on

the sensor type attached to the XNX interface (Figure 35). See

Specicationsfordriftandzerodeviationvalues.

ThistableillustratesthethreeXNXtransmittercongurations

and the sensors each support.

XNX IR Personality XNX EC Personality

Searchline Excel

Searchpoint Optima Plus Local/

Remote

XNX EC Sensor

Generic mA Sensors XNX EC Sensor Remote Mount Kit

XNX mV Personality

705 Local / Remote MPD Local (cat bead and IR) Sensepoint Local / Remote

705HT Local / Remote MPD Remote Sensepoint PPM Local/Remote

Sensepoint HT Remote

Figure 28. XNX Transmitter personalities

Caution: Before wiring the transmitter, confirm that the correct

personality and communication boards are installed.

2.2.1 General Wiring Considerations

For proper operation of the XNX Universal Transmitter and

sensor technologies, consideration of wiring-induced voltage

drops, transient electrical noise, and dissimilar earth ground

potentials is imperative in the design and installation of the

system.

EMI note for applications using shielded cable: Cable

shield must provide 90% coverage of the wiring. Cable

shield terminations must be made at the cable glands

with suitable EMI-type glands. Avoid terminating

cable shields at the earth ground lug inside the XNX

enclosure.

Loading

When wiring for DC power, 4-20mA signal, remote wiring to

sensorsmustbesizedsufcientlytoprovideadequatevoltages

for the line length and the loads that will be used.

Isolation

Isolating power and signal carrying conductors is recommended.

Circuit Protection

Supply circuits must provide over current protection. Class 2

power supplies are required for 24 volt DC supply. Consider

inrush current in specifying any DC supply. Power supply range

XNX Universal Transmitter

Section 2 - Installation and Operation

31

is 16 to 32 VDC for EC and mV versions, 18 to 32 VDC for

Searchpoint Optima Plus and Searchline Excel, and 16 to 32

VDC depending on the limitations of the device for the generic

4-20mA input.

Loads

The use of high inrush or inductive loads may affect the

performance of the transmitter. For best reliability use resistive

loads only.

2.2.2 Distance Considerations for Installation

Providing power to the transmitter is the factor that will

determine the maximum distance of the installation. The 4-20 mA

output signal will easily handle the distance back to the control

equipment.

The primary factors determining distance are the minimum oper-

atingvoltageofthetransmitterand/orsensor;themaximum

currentdrawofthetransmitter/sensor,theresistanceofthewire

used, the power supply voltage, and the current capacity of

power supply.

Anadditionalconsiderationisthetypeofinstallation;

specically,howmanytransmitters/sensorsaredrawingpower

from the same power supply and whether these transmitters are

using the same pair of wires (“daisy-chain”) or have their own

connections.

Types of Installations

There are three basic types of

installation:asingletransmitter;

multipletransmittersconnectedtoasinglepowersource;and

multipletransmittersconnectedina“daisy-chain”conguration.

Single Transmitter

This is the simplest type of installation. It consists of a single

XNX transmitter installation per power source.

Class 2

Power Supply

Class 2

Power Supply

Class 2

Power Supply

Figure 29. Single Transmitter Installation

Advantages:

• Maximum distance between power source and transmitter

• Smaller power source

• If a power source fails, only one monitoring point fails.

Disadvantage:

• Multiple transmitters require multiple power sources.

Multiple Transmitters Connected to a Single Power Source

This is two or more transmitters sharing a single power source

with each transmitter having its own dedicated wiring to the

power source.

Class 2

Power Supply

Figure 30. Multiple Transmitters Powered by a Single Power Supply

Advantages:

• Maximum distance between power source and

transmitters

XNX Universal Transmitter

Section 2 - Installation and Operation

32

• Fewer power sources.

Disadvantages:

• Larger power source will be needed

• If a power source fails, several monitoring points fail.

Multiple Transmitters Connected in a “Daisy-Chain”

Conguration

Thiscongurationconsistsoftwoormoretransmittersinstalled

in a line. The power connections are installed as an extension of

theprevioustransmitter,withthersttransmitterbeingtheonly

one actually wired to the power source.

Class 2

Power Supply

Figure 31. Daisy-chained transmitters from one power supply

Advantages:

• Less wire needed for installation

• Fewer power sources.

Disadvantages:

• Requires a larger power source

• Shorter distance between power source and transmitters.

• If a power source fails, several monitoring points fail.

Note: CSA/FM certification does not cover daisy-chained XNX combus-

tible gas transmitters.

Power Source Selection

For each type of installation, selection of power supply is

important. Power supplies are rated by voltage and power.

The nominal voltage for all XNX transmitters is 24V with the

power required depending on the number of points using the

same power supply.

XNX Universal Transmitter Maximum Power Consumption

Conguration

-40°C to +65°C -10°C to +65°C

HART

over

4-20mA

(watts)

HART over 4-20mA

with Relay, Modbus

®

, or

Foundation

TM

Fieldbus

(watts)

HART

over

4-20mA

(watts)

HART over 4-20mA

with Relay, Mod-

bus, or Foundation

Fieldbus

(watts)

XNX with toxic

sensors

5.1 6.2 3.4 4.5

XNX with catalytic

sensors

5.4 6.5 3.7 4.8

XNX with infrared

cartridge

5.4 6.5 3.7 4.8

XNX with Searchpoint

Optima Plus

8.6 9.7 6.9 8.0

XNX with

Searchline Excel

12.1 13.2 10.4 11.5

As a general guideline, the power supply should be capable

of providing more power than is required by the installation. A

10wattpowersupplyisneforasingleXNXmVwithcatalytic

sensor (6.5 watts required, see the following table) but is

inadequate for a single XNX IR with Searchpoint Optima Plus (10

watts required).

To determine the wattage required, add the maximum power

requirements of all the points that will share the power supply.

For example, consider a system with two XNX mV transmitters

with catalytic sensors (6.5 watts each) and one XNX IR with

XNX Universal Transmitter

Section 2 - Installation and Operation

33

Searchpoint Optima Plus (10 watts). A 25 watt power supply

would probably handle this installation, but a 30 watt power

supply would be a better choice.

Wire Selection

The type of wire used for connections has an effect on the

distance of the installation. This is because some of the voltage

is lost in the wire on the way to the transmitter.

Thinner wire (i.e., 18 AWG) will lose more voltage than thicker

wire (i.e., 12 AWG). The amount of voltage lost depends on how

muchpowerisbeingdrawnthroughthewire;morepowermeans

more loss. If too much voltage is lost in the wiring, there may

not be enough at the distant point to allow the transmitter to

operate.

Distance Chart for Single Transmitter Distances

For installations that have dedicated wiring between the

transmitter and the power supply, use the following chart. These

distances assume stranded wire is used. If multiple transmitters

are using the same power supply, make sure the power

supply wattage rating is high enough to power all transmitters

simultaneously.

Class 2

Power Supply

Class 2

Power Supply

OR

Figure 32. Single transmitter distances

Single Transmitter Distances

Conguration

18 AWG

[1.0 mm2]

16 AWG

[1.5 mm2]

14 AWG

[2.0 mm2]

12 AWG

[3.5 mm2]

XNX mV or EC

With Sensor

1140 feet

[347 meters]

1810 feet

[551 meters]

2890 feet

[880 meters]

4620 feet

[1408

meters]

XNX IR with

Searchpoint Optima Plus

660 feet

[201 meters]

1060 feet

[323 meters]

1690 feet

[515 meters]

2690 feet

[820 meters]

XNX IR with

Searchline Excel

550 feet

[168 meters]

890 feet

[270 meters]

1410 feet

[430 meters]

2260 feet

[690 meters]

XNX Universal Transmitter

Section 2 - Installation and Operation

34

Daisy-Chained Transmitter Distances

Itisdifculttocalculatedistancesforthisconguration.There

are many factors to be considered: distance from control room

torsttransmitter,distancebetweentransmitters,sensortypes,

etc. A few scenarios are presented here to provide a base to

work from.

Class 2

Power Supply

“d”

“d”“d”“d”

Transmitter 1 Transmitter 2 Transmitter 3 Transmitter 4 Transmitter 5

Figure 33. Daisy-chained transmitter distances

1. Several transmitters equally spaced from themselves and

the power source.

2 Transmitters - Distance “d”

Conguration

18 AWG

[1.0 mm2]

16 AWG

[1.5 mm2]

14 AWG

[2.0 mm2]

12 AWG

[3.5 mm2]

XNX mV or EC

With Sensor

380 feet

[115 meters]

600 feet

[183 meters]

960 feet

[292 meters]

1540 feet

[469 meters]

XNX IR with

Searchpoint Optima Plus

220 feet

[67 meters]

350 feet

[106 meters]

560 feet

[170 meters]

900 feet

[274 meters]

XNX IR with

Searchline Excel

185 feet

[56 meters]

295 feet

[90 meters]

470 feet

[143 meters]

750 feet

[229 meters]

3 Transmitters - Distance “d”

Conguration

18 AWG

[1.0 mm2]

16 AWG

[1.5 mm2]

14 AWG

[2.0 mm2]

12 AWG

[3.5 mm2]

XNX mV or EC

With Sensor

190 feet

[58 meters]

300 feet

[91 meters]

480 feet

[146 meters]

770 feet

[234 meters]

XNX IR with

Searchpoint Optima Plus

110 feet

[33 meters]

175 feet

[53 meters]

280 feet

[85 meters]

450 feet

[137 meters]

XNX IR with

Searchline Excel

90 feet

[27 meters]

145 feet

[44 meters]

235 feet

[71 meters]

375 feet

[114 meters]

4 Transmitters - Distance “d”

Conguration

18 AWG

[1.0 mm2]

16 AWG

[1.5 mm2]

14 AWG

[2.0 mm2]

12 AWG

[3.5 mm2]

XNX mV or EC

With Sensor

110 feet

[33 meters]

180 feet

[55 meters]

290 feet

[88 meters]

460 feet

[140 meters]

XNX IR with

Searchpoint Optima Plus

65 feet

[20 meters]

105 feet

[32 meters]

165 feet

[50 meters]

270 feet

[82 meters]

XNX IR with

Searchline Excel

55 feet

[17 meters]

85 feet

[26 meters]

140 feet

[43 meters]

225 feet

[68 meters]

5 Transmitters - Distance “d”

Conguration

18 AWG

[1.0 mm2]

16 AWG

[1.5 mm2]

14 AWG

[2.0 mm2]

12 AWG

[3.5 mm2]

XNX mV or EC

With Sensor

75 feet

[23 meters]

120 feet

[36 meters]

190 feet

[58 meters]

300 feet

[91 meters]

XNX IR with

Searchpoint Optima Plus

45 feet

[13 meters]

70 feet

[21 meters]

110 feet

[33 meters]

180 feet

[55 meters]

XNX IR with

Searchline Excel

35 feet

[11 meters]

55 feet

[17 meters]

90 feet

[27 meters]

150 feet

[46 meters]

XNX Universal Transmitter

Section 2 - Installation and Operation

35

2. Several transmitters installed in pairs with each pair

equally spaced from the next pair and the power source.

These distances assume the paired transmitters are

installed within 10 feet [3 meters] of each other.

Class 2

Power Supply

“d”“d”“d”

Transmitters 1 and 2 Transmitters 3 and 4 Transmitters 5 and 6

Figure 34. Transmitters in pairs

2 Transmitters - Distance “d”

Conguration

18 AWG

[1.0 mm2]

16 AWG

[1.5 mm2]

14 AWG

[2.0 mm2]

12 AWG

[3.5 mm2]

XNX mV or EC

With Sensor

485 feet

[147 meters]

775 feet

[235 meters]

1230 feet

[292 meters]

1970 feet

[600 meters]

XNX IR with

Searchpoint Optima Plus

380 feet

[115 meters]

600 feet

[180 meters]

960 feet

[290 meters]

1540 feet

[470 meters]

XNX IR with

Searchline Excel

280 feet

[85 meters]

440 feet

[134 meters]

700 feet

[213 meters]

1130 feet

[344 meters]

4 Transmitters - Distance “d”

Conguration

18 AWG

[1.0 mm2]

16 AWG

[1.5 mm2]

14 AWG

[2.0 mm2]

12 AWG

[3.5 mm2]

XNX mV or EC

With Sensor

190 feet

[58 meters]

300 feet

[91 meters]

480 feet

[146 meters]

770 feet

[234 meters]

XNX IR with

Searchpoint Optima Plus

110 feet

[33 meters]

175 feet

[53 meters]

280 feet

[85 meters]

450 feet

[137 meters]

XNX IR with

Searchline Excel

90 feet

[27 meters]

145 feet

[44 meters]

235 feet

[71 meters]

375 feet

[114 meters]

6 Transmitters - Distance “d”

Conguration

18 AWG

[1.0 mm2]

16 AWG

[1.5 mm2]

14 AWG

[2.0 mm2]

12 AWG

[3.5 mm2]

XNX mV or EC

With Sensor

95 feet

[33 meters]

150 feet

[45 meters]

240 feet

[73 meters]

385 feet

[117 meters]

XNX IR with

Searchpoint Optima Plus

55 feet

[17 meters]

85 feet

[26 meters]

140 feet

[42 meters]

225 feet

[68 meters]

XNX IR with

Searchline Excel

45 feet

[14 meters]

70 feet

[21 meters]

115 feet

[35 meters]

185 feet

[56 meters]

Ensure that wiring is adequately protected from mechanical failure in

installation.Specicshortedoropencircuitconditionsofwiringtothe

MPD **I** sensors may result in full scale concentration readings prior

to, or preventing the internal diagnostic routines from identifying the

external installation fault.

XNX Universal Transmitter

Section 2 - Installation and Operation

36

2.2.3 POD Connections

This illustration shows the connections available on each of the

terminal blocks for each type of personality board.

J1 - Remote HART

®

Connector Only

Personality

Boards

Option

Boards

A

B

C

D

E

F

Figure 35. XNX Personality Board Terminal Block Legend

Each of the personalities use a single terminal block for

connection with the exception of the IR personality, which

requires a second terminal block.

The personality boards also provide a dedicated pair of jumper

switchestodeneoutputofthetransmitterasisolated4-20mA,

Sink 20mA, or Source 20mA as well as a service jumper to allow

power to the loop to continue when the transmitter is being

serviced. A separate connector is used to activate local HART

(see Section 2.3.1).

Local HART provides an external access to control the

transmitter. An intrinsically safe (IS) barrier inside the transmitter

allows the user to attach an external hand-held interrogator

forprogrammingandconguration.Theexternalinterfaceis

intrinsically safe. It is installed in the transmitter’s lower left

cable/conduitport.

Table A Table B

Board Type Function S1 S2 Board Type Connection Function

EC Personality

4-20mA

Output

Source

 

EC Personality

TB1

Power, 4-20mA

mV

Personality

Sink

 

mV Personality

Power, 4-20mA,

Sensor

IR

Personality

Isolated

 

IR Personality

Power, 4-20mA,

IR Power and

Signal

Table C Table D

Board Type Function S3 S4 Board Type Connection Function

IR

Personality

IR 4-20mA

Input

Source

 

EC Personality J2 EC IS Barrier

Sink

 

IR Personality TB2 Com A and B

Table E Table F

Board Type Connection Function Board Type Connection Function

Relay TB4

Remote Reset

Connector

Relay TB3 Relay Output

Modbus SW5

Bus Loop

Terminators

Modbus TB3 Data Connection

Foundatin

Fieldbus

SW5 Simulation Mode

Foundation

Fieldbus

TB3 Data connection

Note: Open loop faults are not available due to HART, Modbus, and

Foundation Fieldbus interfaces where a 4-20 signal cannot be used.

In this case, open loop, 0mA must be used as the diagnostic.

The Option circuit boards vary depending upon the option

selected when ordered. Only one of the three available interface

options (relays, Modbus, or Foundation Fieldbus) can be

attached to the XNX transmitter. When installed, connections to

the options are made to connectors at the bottom of the POD.

XNX Universal Transmitter

Section 2 - Installation and Operation

37

2.2.4

4-20mA Output, Common Connections, and

Power Settings

TheXNXUniversalTransmitterallowstheusertocongure

the 4-20mA output to Sink, Source, or Isolated mode

operation via two programming switches on the POD

1

. The

SwitchCongurationtableshowstheS1andS2settingand

correspondingoutputconguration.

Switch Conguration

Mode S1 S2

Source Down Up

Sink Up Down

Isolated Down Down

Mostcontrollersinthemarketwillacceptsource-congured

devices.Sink-conguredsignalsareusedinoldertechnology

controllers, which reduce the need for complete system

upgrades.In isolated-signal devices, if the controller fails or the

mAsignalwiresaredisconnectedorbroken,theelddevicewill

remain operational. Most controllers in the market will accept

isolatedcongureddevices.

Power and 4-20mA connections are made at TB-1 and are

identical for the EC, IR, and mV Personality Boards. For user

convenience, a second set of +Ve and -Ve power terminals have

been provided to eliminate the need for a secondary junction

box in multi-node systems when used with the supplied terminal

jumpers.

The total load resistance for the 4-20mA output should be

kept lower than 500Ω, including the resistance of the properly

selected 4-20mA cable and input impedance of the equipment

tobeconnnected.Theminimumloopimpedenceis200ohms;

1 The 4-20 mA output state is refreshed at least every two seconds (once per second is typical).

the maximum is 500 ohms. If the 20 mA output is not used, a 500

ohm resistor must be installed.

The XNX Universal Transmitter power consumption is dependent

onthesensorandoptionsforthespecicconguration.For

proper operation, the input voltage must be maintained at 16 to

32 VDC for EC and mV units and 18 to 32 VDC for IR units.

Controller

+VE

Signal

-VE

R

L

1

2

3

1-1

1-5

1-3

+V

+mA

-V

XNX

XNX Sink Configuration

Current

Flow

Figure 36. Sink wiring for XNX

XNX Source Configuration

Controller

+VE

Signal

-VE

R

L

1

2

3

1-1

1-6

1-3

+V

-mA

-V

XNX

Current

Flow

Terminate cable screen at the detector or controller, not both.

Figure 37. Source wiring for XNX

Controller

+V1

+V2

-V2

1-1

1-5

1-6

+V

+mA

-V

XNX

1-3

-mA

-V1

XNX Isolated Configuration

Figure 38. Isolated wiring for XNX

XNX Universal Transmitter

Section 2 - Installation and Operation

38

Labels applied to the back of the POD identify each of the

connection points.

Note: Pins 2 and 4 of terminal block TB1 have no internal connection

on the personality board. When used with the terminal block jumpers,

pins 2 and 4 can provide additional 4-20mA connections or supply

power for daisy-chained units.

2.2.5

Foundation Fieldbus Wiring

Foundation Fieldbus connections to the XNX transmitter are

made through a pluggable terminal block on the Foundation

Fieldbus option board, shown in Figure 39. A simulation switch

(SW5)isincludedontheboardtoenable/disablesimulation

mode. Terminals 3-1 through 3-4 are provided to facilitate bus

wiring;thereisnointernalconnectiontootherXNXcircuitry.

Terminal 3-1 is connected internally to 3-2. Similarly, terminal 3-3

is connected internally to 3-4.

+

TB-3 Modbus

Use shorting jumper

supplied to maintain

connection during

service

S5 Sim Mode

Out

In

3-1

3-2

3-3

3-4

3-5

3-6

F+

F-

FS

TB-3 FFB

Jumper

assignments

1

2

3

4

5

6

to internal

ground lug

SW5 -

Sim switch

Internal ground lug

Foundation Fieldbus

ground cable

Figure 39. XNX Foundation Fieldbus option board and terminal block

2.2.6 Terminal Block Connections

Connections to the transmitter are made via pluggable terminal

blocks secured to the back of the POD. The terminal blocks are

keyedandpolarized.Acolorcodedlabelassistsinwiringwhen

the block is removed from the POD.

The terminals are suitable for use with 12 to 28 AWG or 0.8 to

2.5mm

2

wire.Wireinsulationmustbestripped5/16”(0.312”)or

8mm. Tighten each terminal to a maximum of 4.5 in-lbs (0.51 Nm).

Uptofourterminalblocksareprovided;eachhaving2,6,9,or10

positions (see the

XNX Quick Start Guide

for additional details).

Two terminal block jumpers are included to provide an electrical

connection without connection to the Personality Board. Install

the jumpers between pins 1 and 2 and between pins 3 and 4 to

support multi-node wiring.

Warning: When the transmitter is equipped with the optional Remote Mount

Kit, the remote sensor must be securely mounted in a fixed position. The Remote

Sensor kit is not intednded to be used as a hand-held sensor.

XNX Universal Transmitter

Section 2 - Installation and Operation

39

TB-1 Terminal Block

Terminal Block Jumper

IN

OUT

Figure 40. Pluggable Terminal Block and Terminal Block Jumper

2.2.7 EC Personality Wiring

Caution: Do not force the POD into the enclosure. Doing so may

result in damage to the wiring or the POD or may alter the switch

settings. If resistance is felt, wires may be preventing the POD from

being properly positioned.

TB1

Position EC

1

+24

2

3

0v

4

J1 - Local HART Connector

S1 and S2 - Signal Output

Jumper Switch

▼▼

▲

S2S1

Isolated

▼

Sink

▼

▲

Source

XNX EC TB-1

J2 - EC Barrier Connector

HART

20 mA

Operation

LOCAL

J1

S1

Source

Sink

Isolated

S2

EC Barrier

J2

+V 1-1

EC TB-1

4-20mA

HART

16-32 VDC

6.2W max.

1-2

-V 1-3

1-4

+mA 1-5

-mA 1-6

1

2

3

4

5

6

Figure 41. XNX EC Personality Board Terminal Blocks and Jumper Switches and Terminal

Block Assignments

XNX Universal Transmitter

Section 2 - Installation and Operation

40



EC

Adaptor

Optional Local HART

IS Barrier must

be connected to J1

EC IS Barrier must

be connected to J2

4

3

2

1

-

+

6

5

J1 HART

S1 S2

J2 EC Barrier

Terminal Block 1

Local HART

IS Barrier

(optional)

HART

Adaptor

EC IS Barrier

Sensor Cartridge

Weatherproof Cap

Sensor Retainer

Sensor Cartridge

Weatherproof Cap

Sensor Retainer

Local Sensor Mounted to Transmitter

Sensor Mounted to

Remote Sensor Kit

Figure 42. EC Personality Wiring

XNX Electrochemical Sensor Installation

EC Sensor Installation

Caution: A missing oxygen cell will result in 0% V/V O

2

gas

concentration, thus triggering alarm events. In this situation, check

the connection of the EC cell to the sensor connector board.

Caution: For biased sensors (e.g., nitrogen dioxide) remove the

sensor stabilizer from the bottom of the sensor prior to installation.

Using Figure 42 as a guide, follow this procedure:

1. Verify that the label on the new sensor is the correct gas

type.

2. Unscrew the weatherproof cover, loosen the retainer

locking screw with the supplied hex key, and unscrew the

sensor retainer.

3. Plug in the new sensor. Take care to align the sensor pins

with the connector.

4. Retthesensorretainer,tightenthelockingscrewwiththe

hexkey,andrettheweatherproofcover.Countdowntime

of up to 180 seconds (depending on the sensor type) will

be displayed.

5. Acknowledgement of the gas type will be required before

proceeding. For more information on setting gas type, see

Section 2.5.1 Gas Selection.

XNX Universal Transmitter

Section 2 - Installation and Operation

41

6. Afterthesensorisinstalledandthegastypeisconrmed,

the range, alarm levels, and other important settings must

beset;seeSection 2.5.

7. Afterthetransmitterhasbeencongured,calibrate

the sensor following the procedures in Section 3 -

Calibrations.

Transmitter

Sensor Retainer &

Locking Screw

2

1

3

4

5

New Sensor

Weatherproof Cap

Figure 43. Installing Plug In Sensor

Note: Reference Control Drawing 3000E3157 and 3000E3159 for

install requirements on EC cells and remote mounting.

XNX EC Sensor Remote Mounting Kit

The remote sensor mounting kit is used to mount the XNX EC

sensor up to 50 feet away from the transmitter. To mount the

sensor remotely, follow this procedure:

1. Unscrew the weatherproof cover, loosen the retainer

locking screw and unscrew the sensor retainer.

2. Remove the sensor by pulling without twisting.

3. Plug the remote sensor cable connector into the bottom of

the transmitter.

4. Route the cable to the location where the remote sensor is

to be mounted.

5. Optional: make a loop of cable at the junction box. This

will provide some slack for any future re-terminations.

6. If necessary, cut the cable to the required length.

Caution: Take care not to cut the cable too short. Once cut,

additional lengths of cable cannot be added as this would invalidate

the intrinsically safe certification.

Warning: Enclosures of remotely mounted sensors contain

aluminum. Be careful to avoid ignition hazards due to impact or

friction when installed in Zone 1 locations.

XNX Universal Transmitter

Section 2 - Installation and Operation

42

7. Mount the remote sensor junction box ensuring enough

roombelowtotthesensorandweatherproofcover.See

control drawing 3000E3157 in Section 7.2forspecic

mounting information.

8. Attach the cable to the remote terminal box via the gland

provided.

9. Make the wiring connections as shown in Figure 43.

10. Fit the Terminal box lid.

11. Plug the sensor into the socket at the bottom of the terminal

box.

12. Fitthesensorretainer,tightenthelockingscrew,andt

the weatherproof cover.

13. Calibrate the sensor following the procedure in Section

3.2.1.

Black

1 Yellow

Connections

Pin # Color

2 Green

3 Blue

4 White

5 Red

6

Sensor Cartridge

Weatherproof Cap

Sensor Retainer

Sensor Mounted to Remote Sensor Kit

Figure 44. Installing Remote Sensor Mounting Kit

XNX Universal Transmitter

Section 2 - Installation and Operation

43

2.2.8 mV Personality Wiring

XNX Universal Transmitter with the mV personality Board allows

interfacetoHA’sMultiPurposeDetector(MPD)andeldproven

705 and Sensepoint devices.

Caution: See Section 6 - Specifications to ensure that the

transmitter and the mV sensor have the appropriate approvals prior

to commissioning.

Caution: Verify that the mV sensor being installed has compatible

threads (3/4 NPT or M25).

Read Section 2.2whichdenestheXNXpowerand4-20mA

output connections that are common to all personalities.

Connections from the mV Sensor to the XNX are made via a

single pluggable terminal block allowing ease of installation and

service. Honeywell Analytics recommends that an 8” (203 mm)

service length for wiring be maintained. The wire colors for the

connections for each sensor type are shown in the following

Wire Color from Sensor table.

Verify that wires for 4-20mA outputs are routed away from

sources of noise such as relay wires.

Note: The black and red wires from the MPD are not used with the

XNX mV personality board. Ensure that they are properly isolated

from live connections. Do NOT cut the wires.

Caution: Do not force the POD into the enclosure. Doing so may

result in damage to the wiring or the POD or may alter the switch

settings. If resistance is felt, wires may be preventing the POD from

being properly positioned.

Caution: Be certain to dress the wires properly to ensure cabling

does not contact switches 1-2 on the back of the POD.

XNX Universal Transmitter

Section 2 - Installation and Operation

44

HART

20 mA

Operation

LOCAL

J1

S1

+V 1-1

mV TB-1

MPD, 705

Sensepoint

4-20mA

HART

16-32 VDC

6.5W max.

1-2

-V 1-3

1-4

+mA 1-5

-mA 1-6

Sense

1-7

0v 1-8

Ref 1-9

S1

Source

Sink

Isolated

S2

J1 - Local HART Option Connector

1

2

3

4

5

6

7

8

9

internal

grounding lugs

S1 and S2 - 20mA Output

Jumper Switch

S2

S1

▼

Isolated

▲

Sink

▼

Source

▼

▲

XNX mV TB-1

Figure 45. mV personality board terminal blocks and jumper switches.

TB-1 Desc.

Wire Color from Sensor

mV Catalytic Bead Sensor

Sensept

PPM*

mv MPD w/IR Sensor

MPD

705

705HT

Sensept

Senspt HT

IR 5%

IR Flam

CO

2

CH

4

Pins 1-6 See subsections in Section 2.2.4 for pin identification

7 Sense Brown Red Brown

8 0v White Green White

9 Ref Blue Blue Blue

*Internal earth ground; approximately one inch of the black sheath that contains the Sensepoint PPM’s four wires (red, blue,

green, silver) must be split to allow the silver grounding wire to reach the internal grounding lugs.

Local HART

IS Barrier

(optional)

HART

Adaptor

4

3

2

1

Ref

+

9

8

7

6

5

J1 HART

S1 S2

Terminal Block 1

Com

Sense

-

Optional Local HART

IS Barrier must

be connected to J1

Ground Wire from

Sensepoint PPM and HT

Internal Ground Lug

MPD

705

Sensepoint

Figure 46. mV Personality Wiring

XNX Universal Transmitter

Section 2 - Installation and Operation

45

mV Remote Sensor Mounting

Thesensorcanbemountedremotelyfromthetransmitter;the

installation will vary by installed location, sensor and thread type

used. To remotely mount the sensor, follow this procedure:

1. Unscrew the transmitter’s weatherproof cover and loosen

the retainer locking screw with the supplied hex key.

2. Run conduit from one of the transmitter’s available conduit

ports to the location of the remote terminal housing.

A terminal housing provides a mounting base for the

sensor. The installation wiring enters the terminal housing

via conduit.

UL/CSA Aluminum Junction Box

2441-0022

UL/CSA Stainless Steel Junction Box

2110B2103

ATEX/IEC Junction Box

00780-A-0100

Figure 47. Remote Terminal Housings

The distance between the XNX Transmitter and remote

installation must comply with these parameters to insure proper

operation. Distances are dependent on sensor types and the

wire gauge used.

AWG Metric Wire Gauge

MPD CB1, 705 Series.

Sensepoint Series

Sensors

MPD IC1, IV1 & IF1 Sensors

24 0.25 mm

2

12m (47 ft.) 30m (97 ft.)

22 20m (65 ft.) 50m (162 ft.)

20 0.5 mm

2

30m (97 ft.) 80m (260 ft.)

18 50m (162 ft.) 120m (390 ft.)*

16 1.0 mm

2

80m (260 ft.)* 200m (650 ft.)*

* Frequency of Zero calibration may increase due to the changes in wire resistance from changing temperature.

3. Wire the pluggable terminal block as shown in Figure

45 then plug the connector into the back of the mV

personalityboard.InremotemountMPDcongurations,

the 3 wires connecting the pluggable terminal block and

the remote MPD must be routed through the supplied

ferrite bead (Honeywell Analytics part no. 0060-1051,

supplied in the accessory kit) as shown in Figure 48.

Internal Ground Lug

(do not use)

Power

Ferrite Bead

for Remote

Sensor Wiring

mV

Remote

Sensor

XNX Universal Transmitter

Figure 48. Ferrite bead wiring

4. Mounttheremotesensorjunctionboxwithsufcientroom

belowtotthesensorandweatherproofcover.

Warning: Install the junction box according to local codes and

manufacturer’s requirements.

XNX Universal Transmitter

Section 2 - Installation and Operation

46

5. Attach the conduit to the remote terminal box.

6. In the remote junction box, connect the wires from the

transmitter to the 3-way terminal block in the terminal box.

Note: The black and red wires from the MPD are not used with the

XNX mV personality board. Ensure that they are properly isolated

from live connections. Do NOT cut the wires.

Warning: The enclosures of remotely mounted 705HT sensors

contain aluminum. Be careful to avoid ignition hazards due to impact

or friction when installed in Zone 1 locations.

Allcableportdevicesandblankingelementsshallbecertiedin

typeofexplosionprotectionameproofenclosure“Exd”or“Exe”,

suitable for the conditions of use and correctly installed.

7. Attach and wire the sensor in the terminal box.

8. Fit the terminal box lid.

9. Fit the sensor.

10. Calibrate the sensor following the procedure in Section 3.2

- Calibration.

2.2.9 IR Personality Wiring

The XNX Universal Transmitter allows local programming and

congurationthroughthelocalLCDdisplayaswellasthrough

the HART protocol. Gas concentrations can be read at the

transmitter from Searchpoint Optima Plus or Searchline Excel,

via 4-20mA output as well as from the digital communication

connection on TB2 that can provide additional diagnostic

information. The gas concentration is taken from the digital

communication line as long as it is in agreement with the 4-20

mA output, otherwise the 4-20mA output takes precedence.

Caution: Dress the wires properly so that cabling does not contact

switches 1-4 on the back of the POD.

Thetransmitterprovidesa4-20mAoutputreectingtheinput

received. It also offers diagnostic information or data via HART

or any of the additional communication options offered.

Read Section 2.2

whichdenestheXNXpowerand4-20mA

output connections that are common to all personalities.

Warning: Power off the transmitter before changing S3 or S4. Both

switches must be set in either Source or Sink prior to applying power.

Caution: Do not force the POD into the enclosure. Doing so may

result in damage to the wiring or the POD or may alter the switch

settings. If resistance is felt, wires may be preventing the POD from

being properly positioned.

Do not adjust switch settings while power is applied to the

transmitter;doingsowillcausepermanentdamage.

Connecting a Searchpoint Optima Plus or Searchline Excel

Connections from the Searchpoint Optima Plus or Searchline

Excel to the transmitter are made via two pluggable terminal

blocks allowing ease of installation and service (see Figure

49). HA recommends that an 8” service length of wiring be

maintained.

Inremotemountcongurations,themaximumdistancebetween

XNX Universal Transmitter

Section 2 - Installation and Operation

47

the XNX Transmitter and Optima Plus or Excel is 100 feet (33

meters) using 0.75 mm

2

(18 AWG) wire minimum.

Note: A second, black-handled screwdriver is included for use on

terminal blocks 2 and 4. This tool is smaller than the magnetic wand

and is designed to fit into the terminal connections on TB2 and TB4.

The Searchpoint Optima Plus or Searchline Excel can be

supplied in either Sink or Source mode operation and is typically

labeled on the white wire exiting the Searchpoint Optima Plus or

Searchline Excel. Use the table in Figure 50 to set S3 and S4 to

the same output type that appears on the wire tag of the IR

device.

For more information see the Searchpoint Optima Plus Operating

Instructions (2104M0508) or the Searchline Excel Technical

Manual (2104M0506).

Connecting Generic mA Devices

Use the following schematics to set switches S3 and S4 They

must

be set to the same output type (which appears on the wire

tag of the mA device).

The IR personality type provides for a generic mA input under

sensortypeconguration.Thetransmittercanbeusedto

convert the mA input to be read over HART or optional Modbus

or Foundation Fieldbus protocols and set optional relays (if

equipped).AdditionalcongurationofgastypeandunitID

for reporting is required (see Gas Selection). For Generic mA

devices, input values below 3mA will generate Fault 155.

XNX

+IR

Signal

-IR

R

L

1-7

1-9

1-8

+V

+mA

-V

mA Device

Current

Flow

24V 7W Max

XNX S3 and S4 must be in the UP position

Set mA Device and XNX to the same output type.

Figure 49. XNX mA input sink conguration

XNX

+IR

Signal

-IR

R

L

1-7

1-9

1-8

+V

-mA

-V

mA Device

Current

Flow

XNX S3 and S4 must be in the DOWN position

Set mA Device and XNX to the same output type.

Figure 50. XNX mA input source conguration

XNX Universal Transmitter

Section 2 - Installation and Operation

48

Note:

Honeywell Aanalytics recommends that Excel or Optima and the XNX transmitter be wired to building

ground. The system should be grounded at only one point.

HART

20 mA

Operation

LOCAL

J1

S1

+V 1-1

Searchline

Searchpoint

4-20mA

HART

18-32 VDC

13.2W max.

1-2

-V 1-3

1-4

+mA 1-5

-mA 1-6

1-7

- Ir

+ Ir

1-8

Sig 1-9

S1

Source

Sink

Isolated

S2

Ir TB-1

TB-2 Ir Data

S3

Source

Sink

S4

▼▼

▲▼

▼▲

S2S1

Isolated

Sink

Source

J1 - Local HART Connector

S1 and S2 - 20mA Output

Jumper Switch

S3 and S4 - IR 20mA Input

Jumper Switch

XNX IR TB-1

▼

▲

▼

▲

S4S3

Sink

Source

TB2

Terminal No.

From Searchpoint

Optima Plus

Searchline Excel

A Blue

B Orange

TB1

Terminal

No.

Desc.

From Searchpoint

Optima Plus

Searchline Excel

1 +24v

See Section 2.2.4

Common Connections

.

2

3 0 VDC

4

5 +20mA

6 -20mA

7 +24VDC Red

8 0VDC Black

9 Sig - 20mA White

XNX

Desc.

From Searchpoint Optima Plus

Searchline Excel

Earth Green/Yellow

1

2

3

4

5

6

7

8

9

TB1

TB2

Figure 51. XNX IR

Personality Board Terminal

Blocks, Jumper Switches

and Wiring Guide

Local HART

IS Barrier

(optional)

HART

Adaptor

Optional Local HART

IS Barrier must be

connected to J1

Searchpoint

Optima Plus

4

3

2

1

Sig

Gnd

+24

+

9

8

7

6

5

J1 HART

S1 S2

Terminal Block 1

B

A

2

1

Terminal Block 2

IR Data

S3 S4

To Building

Ground

To Building

Ground

Figure 52. IR Personality Wiring - Searchpoint Optima Plus

XNX Universal Transmitter

Section 2 - Installation and Operation

49

Local HART

IS Barrier

(optional)

Optional Local HART

IS Barrier must be

connected to J1

4

3

2

1

Sig

Gnd

+24

+

9

7

6

5

J1 HART

S1 S2

Terminal Block 1

B

A

1

2

Terminal Block 2

IR Data

S3 S4

8

HART

Adaptor

Searchline Excel

Internal

body screw

To local

building

ground

External

body screw

Mounting plate

must be connected to

the same earth ground

as the XNX transmitter

Isolation kit is not

important in this

configuration

Control

Room

Conduit/armored cable

Earth loop through the

conduit/armored cable

must be avoided

RFI and EMC shield

Control

Room

XNX

Transmitter

Armor

RFI and EMC shield

Notes:

Ground loops through the armor must be avoided.

If armor is connected to the XNX transmitter via a conductive

EXd cable gland, the armor must not be earthed at any other

location (this will prevent ground loops). Since it is already earthed

at the transmitter. Armor must be grounded only if an isolating gland

is used to connect it to the transmitter.

Ground loops through the RFI and EMC shield must be avoided.

RFI and EMC shield must be connected to a clean/instrumentation

earth ground at the control room. To avoid an earth loop, connect it

only at the control room (not at the transmitter).

Figure 53. IR Personality Wiring - Searchline Excel

Attaching the Searchpoint Optima Plus to the XNX Universal

Transmitter

ForM25entries,inserttheseal(P/N1226-0410)intotheproper

cable/conduitopeningthenthreadthelocknut(P/N1226-0409)

onto the Optima to the end of the threads. Thread the Optima

bodyintothetransmitteruntilthesealcompressesand/orthe

Optima bottoms out. Reverse until the semi-circular pattern of

holes on the front of the weather protection are on the bottom

(see below). Tighten the locknut to the XNX body.

Figure 54. Searchpoint Optima Plus orientation

The3/4”NPTportsdonotrequirethesealandlocknut.Theform

of the threads provide positive locking and sealing.

Note: When attaching the Searchpoint Optima Plus, coat the threads

with an anti-seize compound to prevent corrosion.

Searchline Excel and Searchpoint Optima Plus Remote Installation

Junction Boxes are available for the Searchline Excel and

Searchpoint Optima Plus to facilitate remote mounting from

the XNX Universal Transmitter. Junction boxes are available

forinstallationsrequiringUL/CSAorATEXapprovals.Consult

XNX Universal Transmitter

Section 2 - Installation and Operation

50

the Searchline Excel Technical Handbook (2104M0506) or

Searchpoint Optima Plus Operating Instructions (2104M0508)

forspecicsonremoteinstallationsorcontactyourHoneywell

Analytics representative for more information.

Searchpoint Optima Plus or Searchline Excel Wiring Recommendations

When wiring the XNX transmitter and the Searchpoint Optima

Plus or Searchline Excel for remote applications, the general

recommendationsoftheANSI/TIA/EIA-485-Astandardmustbe

adhered to with the following additions:

1. When mounting the Searchline Excel or Searchpoint

Optima Plus, run wiring connections between each Excel

or Optima and the transmitter in a dedicated separate

conduit.

2. Use 18 AWG twisted shielded cable for the RS485

connection between Excel or Optima and the XNX. Make

sure that the shield of the cable is grounded to earth and

XNX ground on one end ONLY.

3. Avoid running wiring near main cables or other high

voltage equipment.

4. Do

not

apply 120 ohm terminating resistors. These

resistors are not required due to low data rates.

5. Honeywell Analytics recommends that Excel or Optima

sensors and the XNX transmitter be wired to building

ground. The system should be grounded at one point only.

INSTALLATION TIP:

Always perform a soft reset after connecting the Searchpoint

OptimaandXNXtransmitterforthersttime.Thesoftresetis

performed by accessing the transmitter’s Calibration Menu.

HART

20 mA

Operation

LOCAL

J1

S1

+V 1-1

Searchline

Searchpoint

4-20mA

HART

18-32 VDC

13.2W max.

1-2

-V 1-3

1-4

+mA 1-5

-mA 1-6

1-7

- Ir

+ Ir

1-8

Sig 1-9

S1

Source

Sink

Isolated

S2

Ir TB-1

TB-2 Ir Data

S3

Source

Sink

S4

IR Sens (silver)

IR +ve (red)

IR -ve (black)

RS485+ (yellow)

RS485- (blue)

IR Sens

IR +ve

IR -ve

RS485+

RS485-

Twisted Shielded Pair

18 AWG

Single Ground Point

RS485 Cable Shield

Ground ONE END ONLY

Power Supply

+ve

-ve

Junction Box

Searchline Excel

Searchpoint Optima Plus

Pair 1: Unit Ground and IR Sense

(Cable Shield Grounded ONE END ONLY)

Pair 2: RS485+ and RS485-

(Cable Shield Grounded ONE END ONLY)

Pair 3: IR +ve and IR -ve

(Cable Shield Grounded ONE END ONLY)

Unit Gnd (green)

Figure 55. XNX IR Remote

Wiring

XNX Universal Transmitter

Section 2 - Installation and Operation

51

2.3 Options

2.3.1 Local HART Interface

Available with any sensor technology or option, this option

provides an external access to the HART interface in the

transmitter. An IS barrier inside the transmitter allows the user to

attach an external hand-held interrogator for programming and

conguration.Theexternalinterfaceisinstalledinthelowerleft

cable/conduitportofthetransmitterandisintrinsicallysafe(IS).

Figure 56. XNX Universal Transmitter with HART Interface IS Barrier installed

The HART protocol is a communication technology used with

smart process instrumentation, providing two-way digital

communication simultaneously with the 4-20mA analog signaling

used by traditional instrumentation equipment. For more

detailed information on HART, see the HART Protocol and www.

hartcomm.org.

Implementation of the HART protocol in the XNX transmitter:

•

MeetsHART6.0physicallayerspecication

• The physical layer is tested according to HART Physical

Layer Test Procedure, HCF_TEST-2.

• Data transfer rate: 1200 bps.

HART devices can operate in point-to-point or multidrop

congurations.

Caution: Device address changes must be performed only by

qualified service personnel.

Point-to-Point Mode

In point-to-point mode, the 4–20 mA signal is used to

communicate one process variable, while additional process

variables,congurationparameters,andotherdevicedataare

transferred digitally via HART protocol (Figure 57). The 4–20 mA

analog signal is not affected by the HART signal.

Control System

or Other Host Application

Multiplexer

Barrier

Handheld Terminal

Field Device

Note: Instrument power is provided by an interface

or external power source that is not shown.

Figure 57. Point-to-Point Mode of Operation

XNX Universal Transmitter

Section 2 - Installation and Operation

52

Multidrop Mode

The multidrop mode of operation requires only a single pair of

wires and, if applicable, safety barriers and an auxiliary power

supplyforupto8elddevices(Figure 58). All process values are

transmitteddigitally.Inmultidropmode,allelddevicepolling

addressesare>0,andthecurrentthrougheachdeviceisxedat

a minimum value (typically 4 mA).

Input/Output (I/O) System

Handheld Terminal

Field Devices

Control System or

Other Host Application

Note: Instrument power is provided by an interface

or external power source that is not shown.

Figure 58. Multidrop Mode of Operation

Note: Use multidrop connection for supervisory control installations

that are widely spaced, such as pipelines, custody transfer stations,

and tank farms.

In general, the installation practice for HART devices is the same

as conventional 4-20mA instrumentation. Individually shielded

twisted pair cable, either in single-pair or multi-pair varieties, is

the recommended wiring practice. Unshielded cables may be

used for short distances if ambient noise and cross-talk will not

affect communication.

Theminimumconductorsizeis0.51mmdiameter(#24AWG)for

cable runs of less than 5,000 ft (1,524m) and 0.81mm diameter

(#20AWG)forlongerdistances.

Cable Length

Most installations are well within the 10,000 ft (3,000 m)

theoretical limit for HART communication. However, the electrical

characteristics of the cable (mostly capacitance) and the

combination of connected devices can affect the maximum

allowable cable length of a HART network. The table below

shows the effect of cable capacitance and the number of

network devices on cable length. The table is based on typical

installations of HART devices in non-IS environments, i.e. no

miscellaneous series impedance.

Detailed information for determining the maximum cable length

foranyHARTnetworkcongurationcanbefoundintheHART

PhysicalLayerSpecications.

Cable Capacitance – pf/ft (pf/m)

Allowable Cable Lengths for 1 mm (18 AWG) Shielded Twisted Pair – feet (meters)

Number of Network

Devices

20 pf/ft

(65 pf/m)

30 pf/ft

(95 pf/m)

50 pf/ft

(160 pf/m)

70 pf/ft

(225 pf/m)

1

9,000 ft

(2,769 m)

6,500 ft

(2,000 m)

4,200 ft

(1,292 m)

3,200 ft

(985 m)

5

8,000 ft

(2,462 m)

5,900 ft

(1,815 m)

3,700 ft

(1,138 m)

2,900 ft

(892 m)

8

7,000 ft

(2,154 m)

5,200 ft

(1,600 m)

3,300 ft

(1,015 m)

2,500 ft

769 m)

XNX Universal Transmitter

Section 2 - Installation and Operation

53

2.3.2 Relays

The relay option (XNX-Relay) provides 3 form “C” SPCO contacts

for alarm and fault indication. TB4 allows alarms to be reset

remotely.

Note: This option is not available when the Modbus or Foundation

Fieldbus options are installed.

Wiringfortherelaysisthroughanavailablecable/conduitportto

a pluggable terminal block. See Figure 35 for the terminal block

legend.

Note: A second, black-handled screwdriver is included for use on

terminal blocks 2 and 4. This tool is smaller than the magnetic wand

and is designed to fit into the terminal connections on TB4.

The XNX transmitter has three relays: relay 1 is for alarm level

1, relay 2 is for alarm level 2, and relay 3 is for faults and special

states. All special states are indicated by the fault relay.

Honeywell Analytics recommends that the fault relay be used in all

installations to maintain safe operation. See Set Alarm Values for

more information.

The relay state is refreshed every 2 seconds. The fault relay is

normallyenergizedindicatingproperoperation.Intheeventof

power failure or fault, the C-NO connection will open.

Warning: Power

externally supplied.

Disconnect at source

prior to servicing.

3-5

3-4

3-3

3-2

3-1

3-6

3-7

3-8

3-9

C

NC

TB4

Remote

Reset SW

Relay Ratings

250VAC 5A

24VDC 5A

NO

C

NC

NO

NC

C

NO

Fault Level 2 Level 1

TB-3 RELAY

TB3 Relay Connections

Warning: Power externally

supplied, disconnect at source

prior to servicing

Relay Contact Ratings:

250 VAC 5 amps

24 VDC 5 amps

Relay

TB3

1

NC

2

C

3

NO

4

NC

5

C

6

NO

7

NC

8

C

9

NO

TB4

1

2

1

2

3

4

5

6

7

8

9

TB3

1

2

TB4

Figure 59. XNX Relay Option Board Terminal Blocks

2.3.3 Modbus

The optional Modbus interface allows all transmitter local

user interface (LUI) functions and parameter settings to be

transmitted.

Modbus is a master-slaves protocol. Only one master (at a

time) is connected to the bus. Up to 247 slave nodes are also

connected to the same serial bus. Modbus communication is

always initiated by the master. The slave nodes never transmit

data without receiving a request from the master node. The slave

nodes never communicate with each other. The master node

initiates only one Modbus transaction at a time.

XNX Universal Transmitter

Section 2 - Installation and Operation

54

Terminals 3-1 through 3-4 are provided to facilitate

bus wiring; there is no internal connection to other XNX

circuitry. Terminal 3-1 is connected internally to 3-2.

Similarly, terminal 3-3 is connected to 3-4

3-5

3-4

3-3

3-2

3-1

3-6

3-7

3-8

3-9

3-10

A

-

+

A

B

S

TB-3 Modbus

S

Use shorting jumper

supplied to maintain

connection during

service

S5 EOL Term

Out

In

R

T

=120

TB3 Modbus Connections

Use Jumper

to maintain

connection

during service

SW5 - Loop Termination

Modbus

TB3

1

+

2

+

3

-

4

-

5

A

6

A

7

B

8

B

9

S

10

S

1

2

3

4

5

6

7

8

9

10

Figure 60. XNX Modbus Option Board Terminal Block / Jumper Switch

Modbus connections to the XNX are made through a pluggable

terminal block on the Modbus interface circuit board. Modbus

RTUprotocolusesASCII/Hexprotocolsforcommunication.See

Figure 35 for the terminal block legend. A loop termination point

(SW5) is included on the Modbus interface board to provide

termination of the Modbus loop.

2.3.4 Foundation Fieldbus

Foundation Fieldbus connections to the XNX transmitter are

made through a pluggable terminal block on the Foundation

Fieldbus option board, shown in Figure 60. A simulation switch

(SW5)isincludedontheboardtoenable/disablesimulation

mode. Terminals 3-1 through 3-4 are provided to facilitate bus

wiring;thereisnointernalconnectiontootherXNXcircuitry.

Terminal 3-1 is connected internally to 3-2. Similarly, terminal 3-3

is connected internally to 3-4.

+

TB-3 Modbus

Use shorting jumper

supplied to maintain

connection during

service

S5 Sim Mode

Out

In

3-1

3-2

3-3

3-4

3-5

3-6

F+

F-

FS

TB-3 FFB

Jumper

assignments

1

2

3

4

5

6

to internal

ground lug

SW5 -

Sim switch

Internal ground lug

Foundation Fieldbus

ground cable

Foundation

Fieldbus

TB3

1

F+

2

F+

3

F-

4

F-

5

FS

6

FS

Figure 61. Foundation Fieldbus Option Board, Terminal Block, Jumper Switch

XNX Universal Transmitter

Section 2 - Installation and Operation

55

2.4 Powering the XNX for the First Time

2.4.1 XNX Units Congured for EC, mV, and IR

(except Searchline Excel)

Aftermounting,wiringthetransmitter,wiringthespecicmVorIR

sensor or installing the EC cartridge, the installation is visually and

electrically tested as described below.

Warning: Minimum and maximum controller alarm levels should not

be set at less than 10% or greater than 90% of the full scale range

of the sensor. CSA and FM agency limits are 60% LEL or 0.6mg/m

3

.

1. Verify that the transmitter is wired correctly according to

this manual and the associated control equipment manual.

2. If equipped, unscrew the weatherproof cover, loosen the

sensor retainer locking screw, and unscrew the retainer.

3. For EC sensors, plug in the sensor cartridge, taking care to

align the sensor pins with the connector holes in the PCB.

Caution: For toxic sensors, remove the shorting clip from the bottom

of the sensor prior to installation. No shorting clip is provided with O

2

sensors.

4. Retthesensorretainer,tightenthelockingscrewandret

the weatherproof cover.

Note: Before replacing the cover on the transmitter housing, coat the

threads with anti-seize compound to prevent corrosion buildup.

Note: Inspect the cover O-ring for cracking or any other defects that

might compromise the integrity of the seal. If it is damaged, replace

with the O-ring supplied in the accessory kit.

5. Apply power to the transmitter. This will in turn provide

power to the sensor.

6. During warmup, the XNX transmitter will be forced to 2mA

(inhibit mode).

7. The transmitter will enter a boot-up routine displaying the

initializationscreen.Thetransmitterloadsitsoperating

system, data from the sensor, sensor software version

numbers, gas type, the detection range and span

calibration gas level, estimated time to next calibration

due, and self test result. This will take about 45 seconds.

Figure 62. XNX Initialization and General Status Screens

Inthenalstagesofboot-up,warningsandfaults

may be observed until the user performs the proper

conguration,calibration,andresetactivities

described in the following sections. See Section 5 for

descriptions of warnings and faults.

Once the General Status screen appears, the

transmitter and sensor are in normal monitoring mode.

XNX Universal Transmitter

Section 2 - Installation and Operation

56

Note: Calibration of sensors attached to the transmitter is mandatory

before the sensor can be used for gas monitoring. Refer to Section

3 - Calibration for the procedure.

Note: For initial commissioning, refer to EN 60079-29-2.

2.4.2 LCD and LED Test

TheLCDandLEDtestisperformedintheinitializationafter

powering on. All LCD pixels and LEDs (red, green, and yellow)

are turned on for 1.5 seconds. The LCD then goes blank and the

LEDs turn off.

2.4.3 XNX IR Units Congured for Searchline Excel

WhenpoweringthetransmitterttedwithaSearchlineExcel

sensor, the following procedure must be followed to assure

proper installation.

1. Verify that the transmitter is wired correctly according to

this manual and the associated control equipment manual.

2. Apply power to the XNX transmitter. This will in turn

provide power to the sensor.

3. Thesensoroutputwillbeforcedto2mA(defaultfault/

inhibit).

4. The XNX transmitter will enter a boot-up routine, displaying

theinitializationscreen.Thetransmitterwillloadits

operating system, data from the sensor, sensor software

version numbers, gas type, the detection range and span

calibration gas level, estimated time to next calibration

due, and self test result. This will take about 45 seconds.

Figure 63. XNX Initialization and General Status Screens

Inthenalstagesofboot-up,warningsandfaults

may be observed until the user performs the proper

conguration,calibration,andresetactivities

described in the following sections. See Section 5 for

descriptions of warnings and faults.

5. When the XNX completes boot-up, perform a soft reset

(see Section 3.6 Soft Reset) on the Excel sensor from the

Calibration Menu. When the soft reset is intitated, the RS-

485 communication will be temporarily interrupted and

faultsF120and/orF161maybeobserved.TheRS-485

communication will be re-established in a few minutes and

the faults will automatically be reset in the Non-Latching

mode.F120and/orF161mustberesetmanuallyinthe

Latching mode.

6. Set the Path Length for the application, then align the

transmitter and receiver (see Section 3.5 Align Excel).

7. Once the alignment is complete, a Zero Calibration

must be performed on the Excel sensor to complete

the commissioning process. (See the Searchline Excel

XNX Universal Transmitter

Section 2 - Installation and Operation

57

TechnicalManualforcalibrationinformationP/N

2104M0506).

8. Reset any faults that appear in the transmitter’s display.

The XNX transmitter and Searchline Excel sensor are now

ready to monitor.

2.5 Conguring the XNX Universal

Transmitter

The XNX Universal Transmittercanbeconguredviathefront

panelbyusingthemenusavailableinCongureMenu.For

information on accessing and navigating the menus, see Section

1.4.1.

2.5.1 Congure Menu

FunctionsintheCongureMenuandthesecuritylevelsrequired

to change them are explained in this table.

Symbol Description

Security

Level

Symbol Description

Security

Level

Select Language 1 Calibration Interval 2

Set Date & Time 1

✓

Accept New Sensor

Type

2

Set mV Sensor Type 2 Beam Block Options 2

Set mA Sensor Type 2 Path Length 2

Gas Selection 2 Unit ID 2

Range & Alarms 2 Relay Options 2

Latching/Non-

latching

2 Fieldbus Options 2

Set Units 2 CongureSecurity 2

mA Levels 2

Warning: When configuring or communicating with the transmitter

using the front panel displays, resume monitoring by exiting all

menus and returning to the General Status menu manually. No time

outs are invoked.

Note: With the exception of Inhbit Mode, gas measurement

continues in the background allowing users to navigate screens

without taking the transmitter offline.

Select Language

Available languages for the XNX transmitter are English, Italian,

French, German, Spanish, Russian, Mandarin, and Portuguese.

Figure 64. Select Language Menu

Different screens are used to display each of the eight available

languages, one language per screen. Each language screen

will appear in three languages: the selected language, Russian,

and Mandarin. To select a new display language, use the

switches to navigage through the selections. Use

✓

to make the

selection or

✖

to discard the selection and return to the previous

menu.

XNX Universal Transmitter

Section 2 - Installation and Operation

58

Figure 65. Language Selection Screen

Figure 66. Accept Language Change Screen

Set Date & Time

Figure 67. Set Date & Time Menu

Select “Set Date and Time” to change the date format and set

thecurrenttime/dateintotheXNX.

Set Date Format

Figure 68. Set Date Format Menu

Use the switchestohighlight“MM/DD/YY.”Select

✓

to set

the date format.

Set Date

Figure 69. Set Date Format Screen / Set Date Menu

Use the Set Date selection to set the current date. Use the

switches to select the year, month, and day. Select

✓

to set the

desired date.

Figure 70. Setting the Date Screen

Use the switches to decrement or increment the values until

the desired value appears. Select

✓

to set the value and move to

the next character. Repeat for each character to be changed.

Set Time

Figure 71. Set Time Menu

Use the switches to decrement or increment the values until

the desired value appears. Use

✓

to select the value and move

to the next character. Repeat for each character to be changed.

XNX Universal Transmitter

Section 2 - Installation and Operation

59

Figure 72. Set Time Screen

Use the switches to navigate to the ü. Select it to save the

changes. If ü is not selected, no changes will be saved.

Figure 73. Accept Time-Date Changes

When the new settings have been saved, the “Settings

Accepted” screen will be displayed.

Figure 74. Time-Date Settings Accepted

The remainder of this section requires Level 2 security access.

Set mV Sensor Type

Figure 75. Set mV Sensor Type Screen

Set mV Sensor Type sets the identity of the type of mV sensor

attached to the transmitter. The available mV sensor type

selections are:

Sensor Description

MPD-IC1 (5%V) MPD Carbon Dioxide 5%Vol

MPD-IV1 (5%V) MPD Methane 5%Vol

MPD-IV1 (100%L) MPD Methane 100%LEL

MPD-IF1 (100%L) MPD Flammable 100%LEL

MPD-CB1 (100%L) MPD Flammable 100%LEL

705-HT (20%L) 705 Flammable 20%LEL (High-Temp)

705-HT (100%L) 705 Flammable 100%LEL (High-Temp)

705-STD (100%L) 705 Flammable 100%LEL

SP-HT (20%L) Sensepoint Flammable 20%LEL (High-Temp)

SP-HT (100%L) Sensepoint Flammable 100%LEL (High-Temp)

SP-STD (100%L) Sensepoint Flammable 100%LEL

SP-PPM (10%L) Sensepoint Flammable PPM (10%LEL equiv)

SP-PPM Sensepoint Flammable PPM

SP-HT-NH3 Sensepoint Ammonia 30,000 PPM

XNX Universal Transmitter

Section 2 - Installation and Operation

60

Figure 76. Current congured mV sensor and mV Available Sensor List

Therstscreendisplaysthecurrentlyconguredsensor.Select

✓

to navigate to the Sensor Selection screen. To select a new

mV sensor, use the

switches to scroll through the list. Use

✓

to select a sensor or

✖

to discard the sensor selection, retaining

the previously selected sensor, and return to the previous menu.

Set mA Sensor Type

Figure 77. Set mA Sensor Type Screen

SetmASensorTypeidentiesthetypeofmAsensorattached

tothetransmitter.TheavailablemAsensorchoicesare“Excel/

Optima” and “Other mA Sensor.”

Figure 78. mA Available Sensor List

To select a new mA sensor, use the switches to move

through the list. Use

✓

to make the selection or

✖

to discard the

selection, retain the previously selected sensor, and return to the

previous menu.

Note: This configuration option is not available for XNX transmitters

with EC sensors.

Gas Selection

Gas Selection sets the target gas for sensors capable of

detecting multiple gases. The available gases for each of the

capable sensors is determined by the device connected to the

XNX transmitter.

Figure 79. Gas Selection Menu

After selecting Gas Selection, the initial screen displays the

current target gas. Select

✓

to display the list of available gases

fortheconguredsensor.Usethe switches to scroll through

the list. A sample of the list is shown in Figure 81.

Figure 80. Available Target Gas List

Use

✓

to select the new gas or

✖

to discard the selection, retain

the previously selected gas, and return to the previous menu.

XNX Universal Transmitter

Section 2 - Installation and Operation

61

When a new gas is selected, these screens are displayed:

Figure 81. Select New Target Gas

Note: The gas selections available will vary with different types

of sensors. Gases listed with a “-2” suffix are compliant with

60079-20-1 LEL levels.

Warning: When selecting a new target gas for units with a

Searchpoint Optima Plus, the sensor must be recalibrated.

These are the XNX transmitter’s selectable gases:

• Butane (C

4

H

10

)

• Carbon Dioxide (CO

2

)

• Ethanol (C

2

H

5

OH)

• Ethylene (C

2

H

4

)

• Hexane (C

6

H

14

)

• Hydrogen (H

2

)

• Methane (CH

4

)

• Methanol (CH

3

OH)

• Propane (C

3

H

8

)

• Star 1 through Star 8

1

Warning: Do not use the XNX Universal Transmitter in oxygen-

enriched atmospheres. Concentrations displayed will be adversely

affected by oxygen depletion.

Changing the Gas or Units Name

If “Other mA Sensor” has been selected as the sensor type, the

existing gas and units can be renamed.

From the Gas Selection

menu, select

✓

to open the Gas Name menu. Select

✓

again to

opentheGasNameeditingdisplay.Therstletterofthecurrent

selection will be highlighted (Figure 82).

Figure 82. Gas Name Screen / Gas Name editing screen

Use the switches to cycle through the 76 options (26 capital

letters, 26 lower case letters, 10 numbers, 13 typographic

characters,andaspace).Whentherstcharacterofthenew

gas name has been reached, select

✓

to advance to the second

character. Repeat this procedure with each character until

the new gas name is displayed. In this example, “mA Sensor”

has been changed to “Flow Sensor” (Figure 83). The name

can be up to 15 characters long. Select

✓

to return to the Gas

Name screen. The new name will be displayed in reverse (light

characters on a dark background). Select the

switch twice to

display the Accept Settings screen. Select

✓

to accept the new

gasname.A“SettingsAccepted”screenwillbedisplayedbriey,

followed by the Gas Selection menu.

✓

Figure 83. Accepting the New Gas Name

Follow the same procedure to rename the units (“%” in the

illustrations). The units name can be up to 5 characters long.

1

In nonane detection applications, if an MPD-CB1 sensor is employed, use star rating 2; with SP-HT

sensors, use star rating 4.

XNX Universal Transmitter

Section 2 - Installation and Operation

62

Gas Selections and Alarm Limits Based on mV Sensor Type

The following tables show the tranmsitter’s programmable alarm limits.

Note: -2 Gas Selection %LEL values are per IEC 60079-20-1:2010

MPD-IC1 (5%V)

Carbon Dioxide

Lower Alarm Limit

(% Vol)

0.5

Upper Alarm Limit

(% Vol)

5.0

MPD-IV1 (5%V/V, 100%LEL)

Methane Methane-1 Methane-2

Lower Alarm Limit

0.5% Vol 10% LEL 10% LEL

Upper Alarm Limit 5.0% Vol 60% LEL 60% LEL

% Volume Reference

n/a 5.0 4.4

MPD-IF1 (100%LEL)

Propane-1 Propane-2

Lower Alarm Limit

(% LEL)

10 10

Upper Alarm Limit

(% LEL)

60 60

% Volume Reference

2.0 1.7

XNX Universal Transmitter

Section 2 - Installation and Operation

63

MPD-CB1 (100% LEL)

Hydrogen

Methane-1

Methane-2

Methanol

Ethelyne-1

Ethelyne-2

Ethanol-1

Ethanol-2

Propane-1

Propane-2

Butane-1

Butane-2

Hexane-1

Hexane-2

Star 1

Star 2

Star 3

Star 4

Star 5

Star 6

Star 7

Star 8

Lower Alarm

Limit (% LEL)

10 10 10 10 10 10 10 10 10 10 10 10 10 10 20 20 20 10 10 10 10 10

Upper Alarm

Limit (% LEL)

60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60

% Volume

Reference

4.0 5.0 4.4 5.5 2.7 2.3 3.3 3.1 2.0 1.7 1.5 1.4 1.2 1.0 n/a n/a n/a n/a n/a n/a n/a n/a

705-STD (100% LEL)

Hydrogen

Methane-1

Methane-2

Methanol

Ethelyne-1

Ethelyne-2

Ethanol-1

Ethanol-2

Propane-1

Propane-2

Butane-1

Butane-2

Hexane-1

Hexane-2

Star 1

Star 2

Star 3

Star 4

Star 5

Star 6

Star 7

Star 8

Lower Alarm

Limit (% LEL)

20 20 20 25 25 30 30 30 25 30 30 30 50 50 50 30 25 20 20 20 15 15

Upper Alarm

Limit (% LEL)

60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60

% Volume

Reference

4.0 5.0 4.4 5.5 2.7 2.3 3.3 3.1 2.0 1.7 1.5 1.4 1.2 1.0 n/a n/a n/a n/a n/a n/a n/a n/a

XNX Universal Transmitter

Section 2 - Installation and Operation

64

705-HT (100% LEL)

Hydrogen

Methane-1

Methane-2

Methanol

Ethelyne-1

Ethelyne-2

Ethanol-1

Ethanol-2

Propane-1

Propane-2

Butane-1

Butane-2

Hexane-1

Hexane-2

Star 1

Star 2

Star 3

Star 4

Star 5

Star 6

Star 7

Star 8

Lower Alarm

Limit (% LEL)

20 15 20 20 20 20 20 20 20 20 20 20 20 20 50 30 25 20 20 20 15 15

Upper Alarm

Limit (% LEL)

60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60

% Volume

Reference

4.0 5.0 4.4 5.5 2.7 2.3 3.3 3.1 2.0 1.7 1.5 1.4 1.2 1.0 n/a n/a n/a n/a n/a n/a n/a n/a

705-HT (20% LEL), SP-HT (20% LEL)

Hydrogen Methane-1 Methane-2

Lower Alarm Limit

(% LEL)

5.0 5.0 5.0

Upper Alarm Limit

(% LEL)

20 20 20

% Volume

Reference

4.0 5.0 4.4

XNX Universal Transmitter

Section 2 - Installation and Operation

65

SP-STD (100% LEL)

Hydrogen

Methane-1

Methane-2

Methanol

Ethelyne-1

Ethelyne-2

Ethanol-1

Ethanol-2

Propane-1

Propane-2

Butane-1

Butane-2

Hexane-1

Hexane-2

Star 1

Star 2

Star 3

Star 4

Star 5

Star 6

Star 7

Star 8

Lower Alarm

Limit (% LEL)

20 15 20 20 20 20 20 20 20 20 20 20 20 20 50 30 25 20 20 20 15 15

Upper Alarm

Limit (% LEL)

60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60

% Volume

Reference

4.0 5.0 4.4 5.5 2.7 2.3 3.3 3.1 2.0 1.7 1.5 1.4 1.2 1.0 n/a n/a n/a n/a n/a n/a n/a n/a

SP-HT (100% LEL)

Hydrogen

Methane-1

Methane-2

Methanol

Ethelyne-1

Ethelyne-2

Ethanol-1

Ethanol-2

Propane-1

Propane-2

Butane-1

Butane-2

Hexane-1

Hexane-2

Star 1

Star 2

Star 3

Star 4

Star 5

Star 6

Star 7

Star 8

Lower Alarm

Limit (% LEL)

10 10 10 10 10 10 10 10 10 10 10 10 10 10 20 20 20 10 10 10 10 10

Upper Alarm

Limit (% LEL)

60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60

% Volume

Reference

4.0 5.0 4.4 5.5 2.7 2.3 3.3 3.1 2.0 1.7 1.5 1.4 1.2 1.0 n/a n/a n/a n/a n/a n/a n/a n/a

XNX Universal Transmitter

Section 2 - Installation and Operation

66

SP-PPM (10% LEL)

Hydrogen Methane-1 Methane-2

Lower Alarm

Limit (% LEL)

2.0 2.0 2.0

Upper Alarm

Limit (% LEL)

10 10 10

% Volume

Reference

4.0 5.0 4.4

SP-PPM

Hydrogen Methane

Lower Alarm

Limit (% LEL)

1000 ppm 1000 ppm

Upper Alarm

Limit (% LEL)

5000 ppm 5000 ppm

% Volume

Reference

n/a n/a

SP-HT-NH3

Ammonia

Lower Alarm

Limit (% LEL)

3000 ppm

Upper Alarm

Limit (% LEL)

30000 ppm

% Volume

Reference

n/a

XNX Universal Transmitter

Section 2 - Installation and Operation

67

Range & Alarms

Warning: XNX Universal Transmitters carrying UL/CSA approvals

that are configured for devices measuring %LEL will not allow

adjustments to the full scale value. The range is fixed at 100%.

The Range & Alarms option applies only to units with

certicationsotherFthanUL/CSA.

Figure 84. Range & Alarms Menu

Set Range (full-scale)

Range is sensor dependent. The Set Range option allows the

full-scale range to be set for the sensor which is attached to the

transmitter. The full-scale range is based on the capability of the

sensor.TheselectablerangeforECsensorsisdenedinthe

Selectable Range column of the table in Section 6.3.2. The selectable

rangeforcatalyticbeadsensorsisdenedintheSelectableRange

column of the table in Section 6.3.5.

Figure 85. Range Option

When the Range option is highlighted, use the switches

to decrement or increment the value. Use

✓

to accept the

displayedvalueandmovetothenexteld.Whenalleldshave

been updated, use the switch to highlight ü on the right side

of the display. Use

✓

to accept the changes.

✓

Figure 86. Setting the Range Value

When complete, the display will return to the Range Option

screen.

Set Alarm Values

Set Alarm Values allows the values for Alarm Direction and Alarm

Limits for both Alarm 1 and Alarm 2 to be set.

Caution: Alarm 1 and Alarm 2 values must be less than the Upper

Limit value.

Use Alarm Direction to establish whether the alarm is to be

triggered by rising or falling gas concentrations. Alarms for

most target gases are triggered by rising concentration levels

butcertaingases;e.g.,oxygen,canbemeasuredfordepletion

levels.WhentheXNXtransmitterisconguredwithmVor

OPTIMA sensors and the meaurement units are LEL, the alarm

level setting is limited to 60%LEL.

If the concentration of the target gas remains above the alarm

values for 3 seconds or more, an alarm will be triggered.

XNX Universal Transmitter

Section 2 - Installation and Operation

68

Figure 87. Alarm Direction

The icons next to the bell images indicate whether the alarm has

been triggered by rising (

) or falling ( ) gas concentrations.

Use the switches to highlight the appropriate trigger. Use

✓

to make the selection or

✖

to discard it.

Figure 88. Setting Alarm Rising/Falling

The Alarm Limits selection sets the alarm trigger level for both

alarms.

Figure 89. Alarm Limits

Use to set the desired alarm limit and

✓

select it. Repeat

for each alarm.

Figure 90. Setting an Alarm Setpoint

When complete, the display will return to the main Range &

Alarm screen. When all settings have been made, use

to

move to the

✓

on the display to Accept Settings.

Figure 91. Accept Settings

When the settings have been saved, the following screen will

appear on the display.

Figure 92. Settings Accepted Screen

See Section 6.1ProductSpecications for EC cell information.

XNX Universal Transmitter

Section 2 - Installation and Operation

69

Selecting the Numeric Format

If “Other mA Sensor” has been selected as the sensor type, the

transmitter’s output can be displayed in one of three numeric

formats. From the Ranges & Alarms menu, select the

✓

switch to

open the Range menu (Figure 93). Select the

✓

switch again to

display the Range Lower Limit menu. Select the switch twice

to open therstNumericFormatmenu.

✓

Figure 93. Navigating to the rst Numeric Format menu

Select the

✓

switch to open the second Numeric Format menu,

which displays the formats available for numerical display (see

Figure 94).

✓

✖

Figure 94. Navigating to the second Numeric Format menu

Select or to cycle through the three options. When the

desired format is highlighted, select the

✓

switch to make the

selection the default display format. Select

✖

twice to return to

the Ranges & Alarms menu.

Latching / Non-Latching

Warning: There is a potential loss of sensitivity during exposure to high

concentrations of H

2

S. Under these conditions, set the control unit to latch

at overrange. In standalone configuration, set alarms to latching. When

resetting the overrange or alarm, verify correct operation of the transmitter.

Latching/Non-LatchingisusedtocontrolwhetherAlarms1and

2 and faults will latch alarms.

Figure 95. Alarm Latching/Non-Latching Screen

Figure 96. Alarm Latching

Select the

or

icon beside the alarm limit to display the

AlarmLatching/Unlatchingscreen.Alarmlatchingdetermines

whether alarms that are triggered are automatically reset when

the condition dissipates (latching off

) or remain active until

an operator resets them manually (latching on

). Highlight the

desired latching option with the switches. Use

✓

to accept

it.

XNX Universal Transmitter

Section 2 - Installation and Operation

70

Figure 97. Setting Alarm Latching/Unlatching

Use the same procedure to set the desired values for Alarm

2 and Faults. When all settings have been made, use

to

navigate to the

✓

on the display. Use

✓

to accept settings.

Figure 98. Accept Settings

When the settings have been saved, the following screen is

displayed.

Figure 99. Settings Accepted Screen

Note: When non-latching is selected, external alarm latching is

recommended.

Set Units

The Set Units menu allows the units of measurement displayed

on the XNX main menu to be set. This option also sets the units

transmitted via HART, Modbus, or Foundation Fieldbus sensors

attached to the XNX transmitter, reporting concentrations in PPM

or %VOL (except oxygen).

Figure 100. Set Units Menu

To change the units, use the switches to highlight the units

icon. Use

✓

to select it. The transmitter’s display will change

to the Display Unit Selection screen which shows the available

choices for the sensor type installed. Use the switches to

highlight the desired unit of measurement. Use

✓

to select it or

✖

to discard the selection.

Figure 101. Display Unit Selection Screen

Caution: When changing units of measure, check alarm level

settings for the proper units and change as necessary.

Once the units of measurement have been set, use the

switches to navigate to the ‘ü’ to accept the values.

mA Levels

This option allows the user to select mA output levels for inhibit,

fault, and over range. Beam block and low signal apply to

XNX Universal Transmitter

Section 2 - Installation and Operation

71

Searchline (see the table in the next column).

Figure 102. mA Levels Menu

Using the switches, move to the mA output to be changed

and use

✓

to select it.

✓

Figure 103. Set mA Levels for Warning

Use the switches to decrement or increment the value until

the desired value appears. Use

✓

to select the value and move

to the next setting. Repeat for each setting to be changed.

The default values and available output ranges for Inhibit,

Warning, Overrange, Beam Blocked, and Low Signal are shown

in the following table. See Section

5Warnings/Faults for more

information.

Signal

Output (mA)

Default Min Max

I

Inhibit 2.0 1.0 3.5

W

Warning 3.0 1.0 3.5

O

Overrange 21.0 20 22

B

Beam Blocked 1.0 1.0 4.0

L

Low Signal 1.0 1.0 4.0

Figure 104. Set mA Levels for Inhibit

After all changes have been made, use the switches to

move to the ‘ü’ and use

✓

on the front panel to accept and save

the settings. If ‘ü’ is not selected, none of the changes will be

saved.

Figure 105. mA Settings Saved

Calibration Interval

Calibration Interval allows a desired interval for sensor

calibration to be set for sensors attached to the transmitter. The

transmitter will generate a warning when the interval is reached.

Figure 106. Calibration Interval Menu

Calibration Interval will not appear when an IR personality board

is attached and the mA sensor type is set as ‘Other mA Sensor’.

The default calibration values for the “Calibration Required”

diagnostic vary based on sensor type. This value can be repro-

grammed in accordance with site requirements to ensure the

highest level of safety. Correct operation of each sensor should

beconrmedusingcalibrationwithacertiedgasofknowncon-

centration before commissioning.

Although the calibration Interval can be set to any value be-

tween 0 and 360 days, Honeywell Analytics recommends that the

interval for electrochemical and catalytic sensors be set to 180

XNX Universal Transmitter

Section 2 - Installation and Operation

72

days (or fewer, in accordance with customer site procedures) to

assure the highest level of safety.

Use the

switches to highlight the current interval and use

✓

to select it.

Figure 107. Edit Interval and Setting Interval Value Screens

Use the switches to move to the desired position. Use

✓

to

select it. Use the

switches to decrement or increment the value

untilthedesiredvalueisreached.(Theminimumnumberofdaysis0;

themaximumnumberisdenedbythesensortype.)Use

✓

to select

thevalueandmovetothenexteld.Repeatforeacheld.Whenall

oftheeldshavebeenupdated,usethe switches to highlight

the

‘ü’

on the right side of the display. Use

✓

on the front panel to

save the settings.

Caution: Setting the Calibration Interval to zero turns off the

calibration notification. This can seriously affect sensor performance.

Figure 108. Saving New Interval and New Interval Accepted Screens

✓

Accept New Sensor Type

When replacing EC cells or mV sensors, use Accept New Sensor

Type to load default parameters into the XNX transmitter for

calibration and sensor life. Accept New Sensor Type is also used

when replacing an EC cell with another EC cell for a different

target gas. (See Section 4.2.2).

Figure 109. Accept New Sensor Type Menu

When changing the target gas by inserting a new sensor, the

transmitterwillprompttheuserforaconrmationofthechange

before adjusting to the properties of the new sensor.

Figure 110. Select New Sensor

In the display of the XNX transmitter, the old sensor type and

the new sensor type will be displayed. Use

✓

to accept the new

sensor or

✖

to reject it.

Beam Block Options

The Beam Block Options menu is available only if the XNX

transmitter is connected to a Searchline Excel sensor.

XNX Universal Transmitter

Section 2 - Installation and Operation

73

Figure 111. Beam Block Menu

If the infrared beam from the Excel transmitter is blocked or

inhibited in such a way that the intensity of the beam drops to a

level below the readable threshold set by the receiver, a warning

will be generated by the XNX transmitter. The Beam Block

Optionsmenuallowstheusertodenethemaximumperiodof

time the infrared beam can be blocked and the percentage of

signal loss before generating a warning through the transmitter.

Figure 112. Beam Block Warning Time

Use the switches to move to the desired beam block

time option and use

✓

to select it. Use the switches

to decrement or increment the value until the desired value

appears. Use

✓

to select the value and move to the next setting.

Figure 113. Setting Beam Block Warning Time

When the beam is blocked longer than the value set in Time to

Beam Block, a fault is generated by the transmitter.

Set Time to Fault sets the minimum time the beam is blocked

before generating a fault.

Figure 114. Beam Block Fault Time

Use the switches to move to the desired beam block

time option and use

✓

to select it. Use the switches

to decrement or increment the value until the desired value

appears. Use

✓

to select the value and move to the next setting.

Figure 115. Setting Beam Block Fault Time

When the beam is blocked longer than the value set in Time to

Fault, a fault is generated by the transmitter.

Low Signal Percentage sets the minimum percentage value of

the beam that is not blocked. When the percentage decreases

belowthedenedpercentage,afaultisgenerated.

Figure 116. Low Signal Percentage

Use the switches to move to the desired Low Signal

Percentage and use

✓

to select it. Use the switches

XNX Universal Transmitter

Section 2 - Installation and Operation

74

to decrement or increment the value until the desired value

appears. Use

✓

to select the value and move to the next setting.

Figure 117. Setting the Low Signal Percentage

Once the values for Beam Block Warning, Beam Block Fault

and Low Signal Percentage have been set, use the

switch to

highlight the ‘ü’ on the right side of the display. Then use

✓

to

accept the changes to the XNX. If ‘ü’ is not highlighted, none of

the changes will be saved.

Figure 118. Accept Beam Block Changes

Figure 119. Beam Block Changes Accepted

Path Length

The distance (in meters) between the transmitter and the receiver

is set through the Path Length menu. This menu is available only

if the transmitter is connected to a Searchline Excel sensor.

Figure 120. Path Length Menu

Setting the Path Length or distance between the transmitter and

receiver of the Excel lets the devices determine the optimum

settings for the beam strength for the application.

Figure 121. Current Path Length Setting

Use the switches to move to the desired Path Length

setting and use

✓

to select it. Use the switches to

decrement or increment the value until the desired value

appears. Use

✓

to select the value and move to the next setting.

Figure 122. Setting Path Length

Once the values for Path Length have been set, use the switch

to highlight the ‘ü’ on the right side of the display. Use the

✓

to

accept the changes.

XNX Universal Transmitter

Section 2 - Installation and Operation

75

Figure 123. Accepting Path Length Changes

Figure 124. Path Length Changes Accepted

Unit ID

The Unit ID option allows a unique unit ID of up to 18 characters

to be set for each XNX transmitter. This character string can be

broadcast over any of the supported communication options,

providingameanstocreateauniqueidenticationforeachXNX

transmitter for accurate reporting. Available characters are A-Z,

a-z,0-9andspecialcharacters?!*%():&/,#+-

Figure 125. Unit ID Menu

Note: The XNX Unit ID is not the same as the HART tag in XNX

applications using HART protocol.

Edit ID

Each XNX is assigned a default Unit ID from the factory. The Edit

IDmenuallowstheassignedIDtobemodied.

Figure 126. Edit Unit ID Screen

From the Edit ID Screen, use the switches and

✓

to select

Edit ID. The current Unit ID is displayed. When editing an existing

ID, the list of available characters begins at the value displayed.

Figure 127. Editing the Unit ID

Use the

✓

switchtohighlighttherstcharactertobechanged.

Use the switches to decrement or increment the value until

the desired value appears. Use

✓

to accept the new value and

move to the next character. Repeat for each character to be

changed. The Unit ID can be up to18 characters long.

Clear ID

This option clears the current set Unit ID.

XNX Universal Transmitter

Section 2 - Installation and Operation

76

Figure 128. Clear Unit ID and Cleared Unit ID Screens

Set ID to Default

The Set ID to Default option returns the Unit ID to the factory

default.

Figure 129. Set ID to Default Screen

Once all changes have been made, Accept Settings must be

selected before exiting the Unit ID menu. When all changes

are saved, the transmitter will display the Settings Accepted

screen.

Figure 130. Accept Settings and Accepted Screens

Relay Options

The Relay Options menu allows the relays for both alarm

levelstobecongured.ThismenuisavailableonlyiftheXNX

transmitter is equipped with the optional relays.

Figure 131. Relay Options Screen

XNXrelayscanbesettoEnergizedorDe-energized.Thedefault

isDe-energized.Thetwostatesforeachrelayarerepresented

by the symbols forenergizedand forde-energized.

Figure 132. Alarm 1 Relay Current State and Setting New State

Use the switches to move to the desired alarm and use

✓

to select it. Use the

switches to change the state of the

relay. Use

✓

to accept the new state. Once the XNX transmitter

has accepted the new information, a Settings Accepted screen

appears.

Figure 133. Accept New Alarm Relay Settings and new Settings Accepted

XNX Universal Transmitter

Section 2 - Installation and Operation

77

Fieldbus Options

TheFieldbusOptionsmenuallowscongurationoftheHART

addressortheoptionalModbuseldbusaddressandbaudrate.

Figure 134. Fieldbus Options Screen

SelecttheFieldbusOptionsicontoactivatetheHART/Modbus

screenstoallowselectionoftheprotocolstobeconguredor

changed.IftheXNXisconguredwithoutHARTorModbus,only

the installed options will be visible.

Figure 135. HART Options Screen

The HART menu provides the ability to select the HART mode.

From the HART screen, use the

switches to highlight the

HART option, then select

✓

. This displays the HART address

screen where the device address and whether the HART protocol

is active in the unit can be set. To set the address, use the

switches to highlight the number in the top line (between 0 and

63) and use

✓

to select it. Use the switches to decrement

or increment the value until the desired value appears. Use

✓

to

select the value and move to the next setting.

Figure 136. HART Address and Address Value Screens

Use the switches to move to the HART option and use

✓

to select it. Use the

switches to scroll through the options

until the desired option is highlighted. Use

✓

to accept the new

state. See Section 2.3.1 and Appendix A for more information

on available HART modes.

Figure 137. HART Mode Screens

Once the values for the HART address and Mode have been

set, use the

switches to navigate to the ‘ü’ then select it to

save the changes to the XNX.

Figure 138. HART Settings Accepted

When the Modbus option is available, use the switches to

move to the Modbus icon and use

✓

to select it. The Modbus

option allows the address and communication baud rate to be

set.

XNX Universal Transmitter

Section 2 - Installation and Operation

78

Figure 139. Modbus Options Screen

From the Set Fieldbus Address screen, select

✓

. To set the

Fieldbus address, use the

switches to move to the desired

position and use

✓

to select it. Use the switches to

decrement or increment the value until the desired value appears.

Use

✓

to select the value and moves to the next setting.

Figure 140. Set Fieldbus Address and Address Value Screens

The communications baud rate can be set from this screen. Use

the switches to highlight the proper baud rate and select

✓

.

✓

Figure 141. Set Baud Rate Screens

Once the values for the Fieldbus address have been set, use

the

switches to navigate to the ‘ü’ then select it to save the

changes.

Figure 142. Accept Settings and Fieldbus Address Settings Accepted

Congure Security

CongureSecurityisusedtosetorresetthelevel1andlevel

2passcodesthatcontrolaccesstothecongurationmenusof

the XNX transmitter.

Figure 143. Congure Security Screens

Easy Reset from Main Status

The Easy Reset from Main Status option controls the ability

to reset faults, warnings, and alarms from the General Status

screen (see Section 1.4.2).

Use the switches and

✓

to select the lock icon .TheLock/

Unlock screen will be displayed. Choose ‘Lock’ to prevent reset

without password access. The ‘Unlock’ choice allows resets

without requiring login or a passcode.

Figure 144. Lock/Unlock Screen

XNX Universal Transmitter

Section 2 - Installation and Operation

79

Level 1 and Level 2 Passcode

Level 1 and 2 passcode screens give the administrator the ability

to assign new passcodes for either or both access levels.

FromtheCongureSecurityScreen,usethe switches to

highlight Passcode 1. Use

✓

tochoosetherstdigitandthe

switches to decrement or increment the values. Use

✓

to accept

the new value and move to the next digit. Repeat until all four digits

have been selected. Follow the same procedure to change the

Level 2 passcode.

Figure 145. Setting Level 1 Passcode

Use the switches to move to “Accept Settings” on the display.

Choose

✓

to save the settings to the transmitter.

Figure 146. Accept Settings and Security Settings Accepted Screens

2.6 Verifying the XNX Conguration

2.6.1 Test Menu

The test menu icons are shown in this table:

Symbol Description Symbol Description

X

Inhibit Force Relay

Force mA Output Alarm/FaultSimulation

Warning: Keep the passwords in a secure area to prevent

unauthorized access to the transmitter. If the passwords are lost,

resetting the XNX transmitter will require a service technician.

X

Inhibit

Warning: When the XNX transmitter is placed in Inhibit Mode,

alarms are silenced. This will prevent an actual gas event from being

reported. Inhibit Mode must be limited to testing and maintenance

only. Exit Inhibit Mode after testing or maintenance activities.

Figure 147. Inhibit Screen

The Inhibit mode is designed to prevent alarms from being

triggered during testing or maintenance.

XNX Universal Transmitter

Section 2 - Installation and Operation

80

Figure 148. Inhibit Menu

Use the switches to inhibit alarms by selecting Inhibit On

with the

✓

.Theconrmationscreenappears.

Figure 149. Conrm Inhibit On

Select

✓

to place the transmitter alarms into inhibit mode. Select

✖

will cancel the choice and leave the alarms in normal operating

mode.

Figure 150. Conrm Inhibit Off

To return from Inhibit mode to to the normal monitoring mode,

select Inhibit Off with the

✓

.Aconrmationscreenappears.

Select

✓

to remove the XNX from Inhibit mode. Select ‘X” to

cancel the choice and leave the alarms in Inhibit mode.

Figure 151. Inhibit Status Screen

When the XNX transmitter is in Inhibit mode, the General Status

display will display the inhibit icon .

Force mA Output

Caution: The mA output set in this menu will revert to the normal

operating values when exiting the Test Menu. For more information

on setting the mA output levels for normal operation, see mA

Levels.

Force mA Output allows peripheral devices driven by mA output

from the XNX transmitter to be tested. Based on the mA output

values set in the mA Levels option (see mA Levels), the operator

chooses the mA level to output to the device.

Figure 152. Force mA Output Screen

The New mA Output screen shows the current mA output in the

left column. The output can be controlled by changing the value

in the column on the right.

XNX Universal Transmitter

Section 2 - Installation and Operation

81

Figure 153. New mA Output Screen

Once the new value is input, use the switches to move to the

‘ü’ and use the

✓

magnetic switch on the front panel to set the

mA output.

Force Relays

Caution: Any relay conditions set in this menu will revert to the

normal operating values when exiting the Test Menu. For more

information on setting the relay options for normal operation, see

Relay Options.

The Force Relay menu allows peripheral devices driven by relays

from the transmitter to be tested. Depending on the relay options set

in the Relay Options menu (see Relay Options), the relay will be open

or closed.

Figure 154. Force Relays Screen

TheRelayStatescreenshowsthecurrentrelaycongurationin

the left column. The output can be controlled by changing the

value in the column on the right.

Figure 155. Relay State Screen

Once the new value is input, use the switches to move to

the ‘ü’ and use the

✓

magnetic switch on the front panel to

change the condition of the relay.

Alarm/Fault Simulation

Alarm and Fault simulation work in tandem with the previous

sections (Force mA Output and Force Relays) to allow thorough

testing of the XNX transmitter and the peripheral warning and

safety devices attached. Figure 156 shows the menu choices

for selecting an alarm or fault simulation.

Figure 156. Alarm/Fault Simulation Screen

Selectinganalarmleveltosimulateactivatesaconrmation

screen.

Figure 157. Alarm/Fault Simulation Menu

XNX Universal Transmitter

Section 2 - Installation and Operation

82

Figure 158. Conrmation

Selecting

✓

will simulate the alarm from the transmitter. If the

✖

is selected, the simulation will be aborted.

Figure 159. Warning and Fault Simulation Screens

To simulate a Warning or Fault from the transmitter, select the

appropriate icon from the menu.

Figure 160. Fault Simulation Conrmation

Aconrmationscreenwillappear.Select

✓

to simulate the

warning or fault from the transmitter. If the

✖

is selected, the

simulationwillbeaborted.UseAlarm/FaultResettoreset

alarms, faults, or warnings generated by the simulation.

Figure 161. Alarm/Fault Reset Screen

Aconrmationscreenwillappear.

Figure 162. Alarm/Fault Reset Screen

Select

✓

to reset the alarms, faults, or warnings generated by the

simulation. If the

✖

is selected, the simulation continues.

Caution: Relays and LEDs will return to their initial states after

simulations are completed unless faults and alarms are set to

latching by the user.

Warning: After changing parameters with a handheld device, verify

that the parameter settings are correct at the transmitter.

XNX Universal Transmitter

Section 2 - Installation and Operation

83

2.6.2

?

Information Menu

The Information Menu Displays the current status information for

these parmeters:

Symbol Description Symbol Description

Show Alarm/Fault Status Show Gas Data

Show Date/Time Show Range/Alarm Settings

Show Transmitter Data Show mA Level Settings

?

Show Transmitter Status Show Relay Settings

Show Sensor Data Show Fieldbus Settings

?

Show Sensor Status

?

Show Event History

Alarm/Fault Status

Figure 163. Alarm/Fault Status Screen

Select Alarm/FaultStatustodisplaytheAlarm/FaultStatus

screen allowing faults and alarms to be reset.

Figure 164. Alarm/Fault Status Screen

The ‘ü’ will be highlighted. Select

✓

to reset all faults and alarms

generatedbythetransmitterthenreturntotheAlarm/FaultStatus

screen. Select the

✖

switchtoreturntotheAlarm/FaultStatus

screen without resetting faults or alarms.

Date & Time

Figure 165. Date/Time Screens

The Date and Time screens display the date and time in the

formats currently set on the transmitter. To set the time and date

see Set Date & Time.

Transmitter Data

Figure 166. Transmitter Data Screen

Using the

switches, t

he Transmitter Data displays the ID, part

number,serialnumber,andversionnumberofthermware.

Figure 167. Transmitter ID, Part Number and Serial Number Screens

XNX Universal Transmitter

Section 2 - Installation and Operation

84

Figure 168. Transmitter Software, 4-20 Monitor and Option Version

TransmitterDataisalsousedtoupdatethecongurationofthe

XNX when an option board is added or changed. To add the new

option, use the

switches to navigate to the Option Revision

screen, then swipe the

✓

magnetic switch on the front panel to

display the Accept New Option Screen. The screen will show

the current option (if any) and the newly installed option. Use the

switches to highlight the option then swipe the

✓

magnetic

switch on the front panel to accept the change. The transmitter

will update the part number of the unit. The new option will then

be operational.

✓

✖

Figure 169. Updating The XNX for Option Boards Added or Changed

?

Transmitter Status

Figure 170. Transmitter Status Screen

Transmitter Status displays information about the XNX unit

including temperature, 4-20 mA output value, and supply

voltage.

Figure 171. Transmitter Temperature and Supply Voltage Screens

XNX Universal Transmitter

Section 2 - Installation and Operation

85

Sensor Data

Figure 172. Sensor Data Screen

Sensor Data displays information about the transmitter including

sensor type and sensor software revision.

Figure 173. Sensor Type and Software Screens

?

Sensor Status

Figure 174. Sensor Status Screen

Sensor Status displays the temperature of the sensor attached

to the transmitter. When equipped with an EC or mV sensor,

sensor life is also displayed.

Figure 175. Sensor Temperature Screen

Gas Data

Figure 176. Gas Settings Screen

GasDatadisplaysthecurrentdetectablegasasconguredfor

the attached sensor.

Figure 177. Gas Abbreviation and Full Scale Screens

Range/Alarm Settings

Figure 178. Range/Alarm Settings Screen

Range/AlarmSettingsdisplaysthecurrentlyconguredalarm

information.

Figure 179. Alarm Display Range Screen

XNX Universal Transmitter

Section 2 - Installation and Operation

86

mA Level Settings

Figure 180. mA Level Settings Screen

mA Level Settings shows the current values for mA output for

Inhibit, Warning, and Overrange output.

Figure 181. mA Output Inhibit, Warning and Overrange Screens.

Fieldbus Settings

Figure 182. Fieldbus Settings

FieldbusSettingsdisplaysthecurrentcongurationofboth

HART and Modbus. To change the settings see Fieldbus

Options. HART displays the current HART address assigned to

the transmitter.

Figure 183. HART Configuration Settings

Modbus displays the current address and communication data

rate assigned to the transmitter.

Figure 184. Modbus Conguration Display Screen

Relay Data

The Relay Menu is enabled only if the XNX transmitter is

equipped with the optional relays.

Figure 185. Relay Data Screen

Figure 186. Relay State Screens

XNX Universal Transmitter

Section 2 - Installation and Operation

87

Relay Data displays the current setting of the optional relays on

the transmitter. To change the relay settings, see Relay Options.

?

Event History

The Event History screen lists all events that are activated by

the transmitter’s settings. Five types of events are recorded:

reset messages, alarm messages, warning messages, fault

messages, and informational messages. The events are listed in

chronological order beginning with the latest.

Eventscanbedisplayedthroughvebrowsingmodes:

• all events in order of occurrence

• all events by hour

• all events by day

• only the alarm events, in order of occurrence

• only the fault events, in order of occurrence

The Event History screen groups events into chronological order

(beginning from the unit’s installation). Events can also be viewed

by hour or by date.

Events listed in

hour

order are grouped without regard to date.

For example, all events that have occurred between noon and

1:00 o’clock since the transmitter’s installation can be isolated.

To view all events in hour order:

1. Usethemagneticwandtolterthedisplaybyhour.

2. Navigate through the displayed times.

Toisolatealloftheeventsfromaspecic

day

:

1. Usethemagneticwandtolterthedisplaybyday.

2. Navigate through the displayed days.

3. Filter the list by all events. This will display all events that

occurred on that day.

WhenthetransmitterisconguredwiththeSearchlineExcelor

Searchpoint Optima, the data reported in the event will be the

fault code from the Searchline Excel or Searchpoint Optima.

The transmitter records up to 1280 events in a circular buffer.

When event 1281 is recorded, the oldest event will be bumped

from the list.

Note: The leading zeros of faults and warnings are not displayed

in the event list; i.e., Fault 011 will be displayed as Fault 11.

Figure 187. Event History Screen

Figure 188. Chronological Event List

Figure 189. Chronological Event List by Hour

XNX Universal Transmitter

Section 2 - Installation and Operation

88

Figure 190. Chronological Event List by Day

Figure 191. Chronological Alarm List

Figure 192. Chronological Fault List

Thetransmitterisconguredwithvecable/conduitportsbuilt

into the housing for wiring and mounting sensors.

XNX Universal Transmitter

XNX Universal Transmitter Technical Manual

89

3 Calibration

XNX Universal Transmitter

Section 3 - Calibration

90

3.1 Gas Calibration Menu

Each of the sensor technologies supported by the XNX

®

Universal Transmitter uses unique calibration procedures. The

description provided illustrates the XNX interface with the

sensor. The description does not replace the procedures found

in each sensor’s operating manual.

The Gas Calibration menu is used for Zero and Span calibration

as well as functional gas testing (bump test). The Gas

Calibration menu is accessed from the Main Menu.

This table shows the Gas Calibration menu icons:

Symbol Description

Gas Calibration

Bump Test

Calibrate mA Output

Soft Reset

Align Excel

✓

Figure 193. Gas Calibration Menu

3.2 Calibration

Warning: Do not use the XNX Universal Transmitter in oxygen-enriched

atmospheres. Concentrations displayed will be adversely affected by oxygen

depletion.

Caution: The calibration procedure should be performed only by qualified

personnel. Take appropriate precautions with cylinders of flammable and toxic

gases.

The default calibration values for the “Calibration Required”

diagnostic vary based on sensor type. This value can be

reprogrammed in accordance with site requirements to ensure

the highest level of safety. Correct operation of each sensor

should be conrmed before each use by calibration with a

certied test gas of known concentration before commissioning.

See Section 6 - Specications for calibration gas specications.

Caution: Recalibrate if the temperature of local environment has varied by more

than ±15°C from the temperature of calibration.

Warning: Honeywell recommends periodic bump tests (every 30 days or

in accordance with customer site procedures) to the sensor to insure proper

operation and compliance with the functional safety rating of the installation.

XNX Universal Transmitter

Section 3 - Calibration

91

3.2.1 Zero and Span Calibration for XNX EC Sensors,

mV Sensors, and Searchpoint Optima

Caution: Before initial calibration, allow the sensor to stabilize for 30 minutes

after applying power. When in Zero and Span Calibration modes, the current

output from the sensor is inhibited (default 2mA) to avoid false alarms.

Caution: For most sticky gases (e.g., HCl, Cl

2

) use PTFE tubing with short

pieces of rubber tube for the final connection (due to the inflexibility of PTFE). This

minimizes adhesion of the gas to the tube surface and allows more accurate

measurement.

To calibrate the sensor, use an appropriate span gas cylinder,

tubing, magnet, and calibration gas ow housing. Set the ow

regulator to 300-375 ml/min for XNX EC sensors or 500 ±200 ml/

min for XNX mV sensors. A compressed gas cylinder (20.9%Vol

oxygen) should be used to perform the zero calibration if the

area where the sensor is located contains any residual amount

of the target gas. If no residual gas is present, background air

can be used to perform the zero calibration. Contact a Honeywell

Analytics representative for details about suitable calibration kits.

To calibrate the sensor, follow the procedure in Section 3.2.2.

Note: The oxygen sensor does not require a zeroing procedure. Background

air (20.9%Vol oxygen) can be used to span the oxygen sensor in place of a

compressed air cylinder (20.9%Vol oxygen). See Section 6.3.2 for other sensors.

Note: EN performance standards require 10 minutes stabilization time for

application of zero and span gas for performance-approved EC, mV, and IR

sensors prior to calibration.

3.2.2 Calibration Procedure

This section outlines the steps for calibrating the transmitter’s

attached sensors.

Note: The Zero Calibration procedure should be performed prior to the Span

Calibration procedure.

1. If using a compressed gas cylinder, push the calibration

gas ow housing onto the bottom of the sensor and apply

the gas.

2. Access the Gas Calibration Menu.

Figure 194. Gas Calibration Menu

Note: The Gas Calibration menu is for both Zero Calibration and Span

Calibration.

Zero Calibration

Sensor Reading

at Current Settings

Figure 195. Zero Calibration Screen

XNX Universal Transmitter

Section 3 - Calibration

92

As the sensor detects the gas and the concentration increases,

the values displayed will reect the changing concentration.

When the concentration values are stable, 3 minutes, select

✓

to

allow the transmitter to calculate the zero adjustment. Selecting

✖

will return to the Gas Calibration menu.

Figure 196. Zero Calibration in Progress

3. If the zero calibration is successful, the transmitter will

display the Zero Passed screen.

Figure 197. Zero Calibration Passed

Span Calibration

If a Span Calibration is not required, select the

✖

to skip the

Span Calibration and return to the Calibration menu.

4. When the Zero Calibration is complete, the Span

Concentration screen appears. The gas concentration

for the Span Gas Calibration can be changed. If the Span

Calibration is skipped, the Gas Calibration screen displays.

Figure 198. Span Gas Concentration Screen

5. Enter the concentration of the span gas by selecting

✓

to

choose the rst digit. Use the

switches to increment or

decrement the values. Use

✓

to accept the new value and

move to the next digit. Continue until all digits have been

selected.

Sensor Reading

at Current Settings

Calibration Gas

Concentration

Figure 199. Span Calibration Screen

6. Apply the span gas. As the sensor detects the gas and the

concentration increases, the values displayed will reect

the changing concentration. When the concentration

values are stable, select

✓

to perform the span. The Span

Calibration process also determines whether the sensor

is within the proper range to accurately detect the target

gas.

Selecting

✖

will cancel the span calibration and return to

the Gas Calibration menu.

7. When the sensor has completed the calibration and the

span algorithms have determined that it is within range,

the Span Passed screen will appear.

XNX Universal Transmitter

Section 3 - Calibration

93

Figure 200. Span Passed Screen

If the calibration is not successful, the Span Failed screen

will display. Selecting

✓

will return to the Span Concentration

screen to begin the span calibration again. Selecting

✖

will

exit Span Calibration and return to the Gas Calibration Menu.

Arrow indicates

gas values too low

Selecting ‘✔’ returns to

the Span Concentration

screen

Figure 201. Span Calibration Failed

Once the Zero Gas and Span calibrations are completed

successfully, the user will be prompted to:

• exit with inhibit off

• exit with inhibit on, or

• not exit.

Figure 202. Span Calibration Failed

Warning: When the XNX transmitter is placed in Inhibit Mode, alarms are

silenced. This will prevent an actual gas event from being reported. Inhibit Mode

must be limited to testing and maintenance only. Exit Inhibit Mode after testing

or maintenance activities.

3.2.3 Using the Calibration Cup

Refer to Figure 203 to attach the calibration cup:

1. Snap the calibration cup into the weather protector. The

two protrusions on the cup t into recesses in the weather

protector.

2. Attach the hose from the gas cylinder to the calibration cup.

Note that the cup’s ow is unidirectional. There is an arrow

on the bottom showing ow direction

3. Adjust the calibration ow rate

1

.

weather

protector

calibration cup

attach gas

cylinder hose

Figure 203. Attaching the Calibration Cup

1 300-375 ml/min for XNX EC sensors, 500 ±200 ml/min for XNX mV sensors, unless

otherwise directed

XNX Universal Transmitter

Section 3 - Calibration

94

3.2.4

Zero and Span Calibration of XNX EC Hydrogen

Sulde (H

2

S) Sensors

Caution: Before initial calibration, allow the sensor to stabilize for 30 minutes

after applying power. When in zero and span calibration modes, the current

output from the sensor is inhibited (default 2mA) to avoid false alarms.

Caution: Recalibrate if the temperature of local environment has varied by

more than ±15°C from the temperature of calibration.

Hydrogen Sulde sensors can be affected by extreme humidity

changes. A sudden increase in ambient humidity can result in a

short-term positive drift in the instrument’s reading. A sudden

decrease in ambient humidity can result in a short-term negative

drift in the instrument’s reading. These are most likely to be

noticed during calibration with dry or cylinder gas.

When calibrating hydrogen sulde cartridges, the following

should be taken into account while following the procedure in

Section 3.2.2.

1. To zero the sensor, use a compressed gas cylinder of

20.9%Vol oxygen (not nitrogen). Do not use background

air.

If a span calibration is to be performed, the span calibration gas

should be applied to the sensor immediately after the zeroing

procedure. Do not allow the sensor to return to ambient air

conditions.

Warning: Long-term exposure (> 20 minutes) to concentrations exceediing the

full-scale range of the sensor can cause it to lose sensitivity. The ouput of the

sensor may then decrease in value even though high levels of toxic gas are still

present. Before re-calibrating the transmitter, verify the absence of gas.

3.2.5 705/705HT Calibrating

For complete calibration and conguration information, see the

Type 705 Operating Instructions (P/N: 00705M5002).

3.2.6 Sensepoint/Sensepoint HT Calibrating

For complete calibration and conguration information, see the

Sieger Sensepoint Technical Handbook (P/N: 2106M0502).

3.2.7 Calibrating the Searchpoint Optima Plus

Complete calibration and conguration information can be

found in the Searchpoint Optima Plus Operating Instructions

(P/N:2108M0501). If properly installed and maintained, the

Searchpoint Optima Plus sensor will not require routine

calibration. This is due to the inherent stability of the IR

absorption process and the unit’s fully compensated optical

conguration.

1. From the Calibration menu, select the Gas Calibration option.

Figure 204. Calibration menu

XNX Universal Transmitter

Section 3 - Calibration

95

z

Figure 205. Gas Calibration menu

2. Perform a zero calibration. When concentration values are

stable, select

✓

✓for XNX to calculate the zero adjustment

Sensor Reading

at Current Settings

Figure 206. Apply Zero Gas screen

3. Select ✓

✖

to return to the Gas Calibration menu. If the zero

calibration was successful, the transmitter will display the

Zero Passed screen

Figure 207. Zero Calibration screens

4. Begin the span calibration by entering the concentration

value of the calibration gas: Select

✓

✓ to choose the rst

digit. Use +/- to increment/decrement values. Select

✓

✓ to

accept the value and move to the next digit. Use calibration

cover P/N 2108B0272 to perform span calibration at a ow

regulator of 1 LPM. (If a span calibration is not required,

select

✖

to return to the calibration menu.)

Figure 208. Searchpoint Optima Plus

5. Continue until all three digits have been entered.

Figure 209. Span Concentration screen

6. Apply the span gas. When concentration values are stable,

select

✓

✓ to calculate the span adjustment. This process

also determines if the sensor is within range to accurately

detect the target gas.

XNX Universal Transmitter

Section 3 - Calibration

96

Sensor Reading

at Current Settings

Calibration Gas

Concentration

Figure 210. Span adjustment calculation

7. Select ✓

✖

to return to the Gas Calibration menu. If the

calibration is not successful, the Span Failed screen will be

displayed.

Arrow indicates

gas values too low

Selecting ‘✔’ returns to

the Span Concentration

screen

Figure 211. Span Failed screen

Select ✓

✓

to return to the Span Concentration screen to repeat

the span calibration.

Select

✖

to exit Span Calibration and return to main

Calibrate screen. If Span Calibration is exited, the previous

calibration values will be used. Select

✓

✓ to return to the Span

Concentration screen.

If the calibration is successful, the Span Passed screen will be

displayed.

Figure 212. Span Passed screen

8. Exit the Calibration Menu. After the zero and span

calibrations have been successfully completed, the user will

be prompted to:

• Exit and turn alarm and fault inhibit off,

• Exit and leave the transmitter in inhibit mode. or

• Not exit

Figure 213. Calibration exit options

Warning: When the XNX transmitter is placed in Inhibit Mode, alarms are

silenced. This will prevent an actual gas event from being reported. Inhibit Mode

must be limited to testing and maintenance only. Exit Inhibit Mode after testing

or maintenance activities.

XNX Universal Transmitter

Section 3 - Calibration

97

3.2.8

Zero and Span Calibration for MPD Sensors

Caution: Extended or frequent exposure to elevated concentrations

of combustible gases may affect sensor sensitivity. Verify sensor

performance by frequent calibration.

Caution: Before initial calibration allow the sensor to stabilize for 30 minutes

after applying power. When in zero and span calibration modes, the current

output from the sensor is inhibited (default 2mA) to avoid false alarms.

The Gas Calibration menu is for both zero and span calibrations.

This section describes how to calibrate MPD ammable sensors

tted to the transmitter. The calibration adjustments are made on

the transmitters display. Gassing is performed at the sensor,

which may be locally or remotely located.

The following equipment is required:

• Flow housing (P/N: 1226A0411)

• Test gas

• Regulator

Note: Zero gas and Span gas should be at about the same humidity levels to

avoid erroneous cell responses.

1. At the MPD, remove the weatherproof cap, if equipped.

2. Fit the ow housing onto the MPD.

Figure 214. Flow Housing

3. Reverse the cap removal procedure. Figure 215 shows the

ow housing accessory tted to the MPD.

Figure 215. MPD with Flow Housing

4. Connect the ow housing (using either gas pipe) to the

regulated cylinder containing a known concentration of the

target gas at approximately the sensor alarm point, e.g., 50%

LEL methane in air.

Warning: As some test gases are hazardous, exhaust the flow housing outlet

to a safe area.

5. Follow the procedure in Section 3.2.1 for both zero and

span calibrations.

6. Apply the target gas to the sensor. Pass the gas through

the ow housing at a rate of

300-375 ml/min for XNX EC

sensors or 500 ±200 ml/min for XNX mV sensors

.

XNX Universal Transmitter

Section 3 - Calibration

98

Sensors should be calibrated at concentrations

representative of those to be measured. It is always

recommended that the sensor be calibrated with the target

gas it is to detect.

Caution: Responsibility for identifying and recording a sensor calibration

made with a different gas rests with the user. Refer to local regulations where

appropriate.

Ensure that the sensor and the vicinity around it is clear of

all traces of the calibration gas before continuing. This is to

avoid triggering spurious alarms.

If calibration fails at any point, discard the cartridge and

replace it with a new one (see Section 4.1) .

7. Remove the test equipment, ret the weatherproof cap to

the sensor (if previously removed for the test), and return

the system to normal operation.

3.2.9 MPD Flammable Sensor Operational Life

The pellistors used in ammable gas sensors can suffer

from a loss of sensitivity when in the presence of poisons or

inhibitors, e.g., silicones, suldes, chlorine, lead, or halogenated

hydrocarbons. The pellistors are poison resistant to maximize the

operational life of the ammable sensor. The typical operating life

of the pellistor sensor used in the MPD-CB1 is 60 months.

3.2.10 XNX EC Sensor Operational Life

The typical life of a toxic gas sensor dependst on the application,

frequency, and amount of gas exposure. Under normal conditions

(3 month visual inspection and 6 month test/recalibration) the toxic

sensor has an expected life equal to or greater than these lifetimes:

• 12 months for ammonia, hydrogen chloride, and hydrogen

uoride sensors (see further ammonia information below).

• 24 months for chlorine dioxide, oxygen, and other toxic

sensors.

See Section 4 - Maintenance for sensor replacement procedures.

Caution: Oxygen deficient atmospheres (less than 6%V/V) may result in

inaccurate readings and performance.

Ammonia electrochemical cells are reliable and suitable for

applications where no background concentration of ammonia exists.

Under these conditions the cells are expected to operate for 12 to 24

months.

These ammonia cells are of the consumptive type. Their operating

life can be adversely affected by continuous or excessive exposure

to ammonia, or by prolonged exposure to high temperatures and

moisture.

To ensure continued detection availability, bump test the sensors

regularly and implement an appropriate cell replacement program.

XNX Universal Transmitter

Section 3 - Calibration

99

3.3 Functional Gas Testing (Bump Testing)

Figure 216. Bump Test Menu

Warning: Exposure to desensitizing or contaminating substances or

concentrations causing operation of any alarm may affect sensor sensitivity.

Following such events, it is recommended to verify sensor performance by

performing a functional gas test (bump test).

It is recommended that the sensor be tested frequently to ensure

that the system is operating properly. Different sensor types may

require more frequent maintenance, depending on the

environmental conditions and the gases present. The

weatherproof cover has a spigot for attaching tubing from a gas

cylinder. This may be used for a simple functional (bump) test of

the sensor. However, environmental conditions may make this

unsuitable for some gas typesor applications. It is the

responsibility of the user to ensure suitability of this method for

each application.

1. When bump gas is applied to the sensor, the bump test

screen displays the current reading of the sensor and the

peak reading that occurred during the bump test.

Peak Reading

Full Scale

Alarm Levels

Current Sensor

Reading

Figure 217. Bump Test Screen

2. If the difference between the reading and the applied

gas concentration is outside the acceptable limits for the

application, follow the procedures for zeroing and calibrating

the sensor (see Section 3.2.1).

3. If the reading is still inaccurate, replace the sensor (see

Section 4.1).

Once the bump test is completed successfully, the transmitter

will exit the calibration procedure. Before returning to the Gas

Calibration menu, the user will be prompted to exit and turn

alarm and fault inhibit off, exit and leave the transmitter in inhibit

mode, or not exit.

Caution: Exiting before the gas level has fallen below the level of Alarm 1 will

cause the transmitter to go into alarm.

Figure 218. Exiting the calibration procedure

XNX Universal Transmitter

Section 3 - Calibration

100

3.4 Calibrate mA Output

Use Calibrate mA Output to adjust the milliamp output to provide

the correct output levels at peripheral devices connected to the

transmitter.

Figure 219. Calibrate mA Output Menu

To adjust the 4mA output, use the

switches to increase or

decrease the output, then use

✓

to accept the new value and

move to the 20mA setting or

✖

to discard the selection and

return to the previous menu.

Figure 220. Calibrate mA Output Screens

During installation, an mA meter must be connected in series

with the 4-20 mA loop as shown below.

Control Equipment

XNX

mA

Meter

4-20 mA loop

Remote end

R load

Figure 221. 4-20 mA loop with mA meter

Note: Calibrated mA output is required for proper operation of internal

diagnostics.

An F165 fault will be reported if the 4-20 mA calibration fails.

3.5 Align Excel (Searchline Excel)

Figure 222. Align Excel Menu

For detailed information on Aligning the Searchline Excel, see the

Searchline Excel Technical Manual (P/N: H-MAN0530-V1).

Alignment Bargraph

Signal Strength

1.00 Signal Strength Target

Reference Value

Figure 223. Align Excel Screen

Align the unit using the information found in the Searchline Excel

manual. As the alignment is performed, the transmitter display will

indicate the signal strength in the form of a bar graph. Align the

Excel until the signal strength bar graph reaches or exceeds 1.00 as

shown on the display.

XNX Universal Transmitter

Section 3 - Calibration

101

3.6 Soft Reset

(Searchline Excel and Searchpoint Optima Plus only)

Figure 224. Soft Reset Menu

For transmitters connected to a Searchline Excel or Searchpoint

Optima Plus sensor, the Soft Reset sends these infrared devices

a signal to restart the sensor.

Figure 225. Soft Reset Sensor Screen

XNX Universal Transmitter

Section 3 - Calibration

102

XNX Universal Transmitter

XNX Universal Transmitter Technical Manual

103

4 Maintenance

XNX Universal Transmitter

Section 4 - Maintenance

104

Warning: When servicing or replacing sensors, reduce the risk of ignition

of hazardous atmosphere by declassifying the area or disconnecting the

equipment from the supply circuit before opening the sensor enclosure.

Keep the assembly tightly closed during operation.

Warning: Take care when handling sensors as they may contain corrosive

solutions. Do not tamper or in any way disassemble the sensor cell. Do not

expose to temperatures outside the recommended range. Do not expose

the sensor to organic solvents or ammable liquids.

Warning: At the end of their working lives, sensors must be disposed of in an

environmentally safe manner, in accordance with local waste management

requirements and environmental legislation. Sensors should NOT be

incinerated as they may emit toxic fumes.

Warning: Verify all outputs, including display, after installation, after service

events, and periodically to ensure the safety and integrity of the system.

Caution: The following procedure should be followed carefully and

performed only by suitably trained personnel. A fault condition will be

signaled by the sensor if it is removed with the unit under power.

Note: If the power-on self-test was skipped during maintenance activities,

restart the transmitter.

4.1 MPD Sensor Cartridge Replacement

Using Figure 226 as a guide, follow this procedure:

1. Verify that the label on the new sensor is the correct gas

type.

2. Remove power from the transmitter.

3. Unscrew the weatherproof cover (if equipped), loosen the

retainer locking screw, and unscrew the sensor retainer.

4. Remove the old sensor by pulling without twisting.

5. Slide the replacement cell into the MPD body taking care

to align the tab with the alignment slot, then press the cell

rmly to seat it into the body.

6. Ret the sensor retainer, tighten the locking screw and ret

the weatherproof cover (if equipped).

7. Recalibrate the sensor following the procedures in Section

3.2.2.

Cell Alignment Slot

Sensor Cell

IR or Cat Bead

Sensor Retainer

and Locking Screw

Internal O-ring

(critical to performance times)

Figure 226. Removing the Plug-in Sensor

XNX Universal Transmitter

Section 4 - Maintenance

105

4.2 XNX

®

EC Sensor Cartridge Replacement

Caution: For toxic sensors, remove the shorting clip from the bottom of the

sensor prior to installation. No shorting clip is provided with oxygen sensors.

The serviceable sensor allows replacement of the cell inside

the sensor. The sensor cell can be replaced with a cell of the

same type or changed to detect a different target gas. Both

procedures follow.

When replacing oxygen (O

2

) sensor cells, the initial warm-up time

is between 10 and 15 minutes. This warm-up is required only

after sensor cell replacement.

4.2.1 Replacing with the Same Cartridge Type

To replace the cell follow this procedure:

1. Unscrew the weatherproof cover, loosen the sensor

retainer locking screw, and unscrew the sensor retainer.

2. Remove the old sensor by pulling without twisting.

3. Unscrew the sensor cap.

4. Remove the old cell by pulling without twisting.

5. Verify that the new cell is the same type as the old one.

6. Plug the new cell into the sensor, taking care to align the

sensor pins with the connector holes in the PCB.

7. Ret the sensor retainer, tighten the locking screw, and

ret the weatherproof cover.

8. Sensor warm-up will begin and the XNX display will

alternate between two screens: “Fault 151” and “WARM.”

Figure 227. Sensor screens during warmup

9. Follow the procedure to accept the new sensor in Accept

New Sensor Type.

10. Recalibrate the sensor following the procedures in Section 3.2.1.

Transmitter

Sensor Retainer &

Locking Screw

Old Sensor

3

2

1

4

5

6

New Sensor

EC Sensor Removal

Sensor Cap

Old cell

New cell

Sensor Cell Replacement

Figure 228. XNX EC Sensor Cell Replacement

XNX Universal Transmitter

Section 4 - Maintenance

106

4.2.2 Replacing with a Different Cartridge Type

To replace the cell with a cell for a different gas, follow this

procedure:

1. Unscrew the weatherproof cover, loosen the sensor

retainer locking screw, and unscrew the sensor retainer.

2. Remove the old sensor by pulling without twisting.

3. Unscrew the sensor cap.

4. Remove the old cell by pulling without twisting.

5. Plug the new cell into the sensor, taking care to align the

sensor pins with the connector holes in the PCB.

6. Ret the sensor, taking care to align the sensor pins with

the connector.

7. Ret the sensor retainer, tighten the locking screw, and

ret the weatherproof cover.

8. The transmitter will enter sensor warm-up mode. However,

due to the change in sensor cell type, the transmitter

will not enter monitor mode until the unit has been

recongured. The display will show the sensor warm-up

screen:

Figure 229. Sensor screens during warmup

Note the message “G:TBV:O2”. “TBV” indicates that the

operator must recongure the transmitter to recognize

the new sensor cell. “O2” will reect the target gas of the

new cell, i.e., H2S, NO2, etc. The display will also alternate

the warm-up screen with the Fault 151 screen. This

indicates that the communication between the transmitter

and the original cell is no longer recognized. This fault

condition will clear after the transmitter has been properly

recongured.

The reconguration of the XNX for a new cell/target gas is

achieved through Accept New Sensor Type. Recalibrate

the sensor following the procedures in Section 3.2.2.

4.2 XNX EC Sensor Cartridge Replacement

XNX Universal Transmitter

XNX Universal Transmitter Technical Manual

107

5 Warnings and Faults

XNX Universal Transmitter

Section 5 - Warnings/Faults

108

5.1 Warning Messages

Warning Description

Applicable

Sensors

Latching / Non-Latching

Frequency of Diag-

nostic

Event History Data Action For Resolution

W001

XNX

®

24 VDC

Supply Bad

All Non-latching 2 seconds

XNX supply

voltage x1000

Check wire of 24V power supply to XNX as well as power supply opera-

tion.

W002

XNX Tempera-

ture Error

All Non-latching 2 seconds

XNX tempera-

ture (Celsius)

Check location for heat sources. Fit with sunshade or other protection.

Change location of XNX. Check temperature in Info->Transmitter Status

to ensure temperature is being measured properly.

W003

Simulated

Warning/Fault

All Non-latching Enabled by user 0 Performing an alarm/fault reset will clear all simulation.

W005

Sensor Tem-

perature Error

Optima Non-latching

XNX polls sensor

every 2 seconds,

diagnostic fre-

quency controlled

by sensor

Sensor fault or

warning code

(Note 4)

Check location for heat sources. Fit with sunshade or other protection.

Change location of XNX. Check temperature in Info->Sensor Status to

ensure temperature is being measured properly.

Sensor Tem-

perature Error

Excel Non-latching

XNX polls sensor

every 2 seconds,

diagnostic fre-

quency controlled

by sensor

Sensor fault or

warning code

(Note 4)

Check location for heat sources. Fit with sunshade or other protection.

Change location of XNX. Check temperature in Info->Sensor Status to

ensure temperature is being measured properly.

Sensor Tem-

perature Error

ECC Non-latching 2 seconds

Sensor temper-

ature (Celsius)

Check location for heat sources. Fit with sunshade or other protection.

Change location of XNX. Check temperature in Info->Sensor Status to

ensure temperature is being measured properly.

W006

Negative Drift ECC, mV Non-latching 2 seconds

Raw gas con-

centration of

sensor

Check sensor location for external interference. Perform zero calibra-

tion. If problem persists after zero calibration and no interference exists,

replace sensor.

Negative Drift

Optima,

Excel

Non-latching

XNX polls sensor

every 2 seconds,

diagnostic fre-

quency controlled

by sensor

Sensor fault or

warning code

Check sensor location for external interference. Perform zero calibra-

tion. If problem persists after zero calibration and no interference exists,

replace sensor.

W007

Calibration

Required

All Non-latching 2 seconds

Number of days

remaining until

calibration ex-

pires, negative

= number of

days expired

Time since the last span calibration has exceeded a dened limit. Per

-

forming a successful span calibration will clear the condition. The limit is

the user-dened calibration interval. W007 can be disabled by setting the

calibration interval to 0.

XNX Universal Transmitter

Section 5 - Warnings/Faults

109

Warning Description

Applicable

Sensors

Latching / Non-Latching

Frequency of Diag-

nostic

Event History Data Action For Resolution

W009

Sensor 24 VDC

Supply Bad

Optima,

Excel

Non-latching

XNX polls sensor

every 2 seconds,

diagnostic fre-

quency controlled

by sensor

Sensor fault or

warning code

(Note 4)

Check wire of 24V power supply to XNX as well as power supply opera-

tion. Also check wiring between XNX and Optima/Excel.

W010

Sensor Path

Obscured

Optima Non-latching

XNX polls sensor

every 2 seconds,

diagnostic fre-

quency controlled

by sensor

Sensor fault or

warning code

(Note 4)

Check location for external interference. Check sensor for dirty windows.

Beam Block Excel Non-latching

XNX polls sensor

every 2 seconds,

diagnostic fre-

quency controlled

by sensor

Sensor fault or

warning code

(Note 4)

Check location for external interference or obstructions in the IR path.

Check sensor for dirty windows. Check Excel alignment.

W011

Sensor In-

ternal Lamp

Issue

Optima Latching

XNX polls sensor

every 2 seconds,

diagnostic fre-

quency controlled

by sensor

Sensor fault or

warning code

(Note 4)

Remove and return to Honeywell for repair.

W012

Excessive

Float

Optima,

Excel

Non-latching

XNX polls sensor

every 2 seconds,

diagnostic fre-

quency controlled

by sensor

Sensor fault or

warning code

(Note 4)

Check sensor location for external interference, check sensor for opera-

tion and re-zero where appropriate.

W013

Sensor Loop

Failure, (Sen-

sor is losing/

has lost mA

output signal.

These are

detected by

Optima and

Excel.

Optima,

Excel

Latching

XNX polls sensor

every 2 seconds,

diagnostic fre-

quency controlled

by sensor

Sensor fault or

warning code

(Note 4)

Check that supply voltage is stable. Check wiring between Optima/

Excel and XNX. Check loop impedance of wiring. Check that switches

S3 and S4 are set correctly. If the switch settings need to be changed,

power down the transmitter before changing the switch settings. Once

the problem has been resolved, a Soft Reset must be performed for the

Calibration menu to clear W013.

W014

Sensor Real

Time Clock

issue

Excel Non-latching

XNX polls sensor

every 2 seconds,

diagnostic con-

trolled by sensor

Sensor fault or

warning code

(Note 4)

Reset “date and time” in Excel, re-cycle Excel power and conrm “date

and time.” If not retained, remove and return to Honeywell for repair.

XNX Universal Transmitter

Section 5 - Warnings/Faults

110

Warning Description

Applicable

Sensors

Latching / Non-Latching

Frequency of Diag-

nostic

Event History Data Action For Resolution

W015

Sensor Inter-

nal Failure

Optima,

Excel

Latching and Non-

latching

XNX polls sensor

every 2 seconds,

diagnostic fre-

quency controlled

by sensor

Sensor fault or

warning code

(Note 4)

Remove and return to Honeywell for repair.

Sensor has an

internal soft-

ware error

Excel Latching

XNX polls sensor

every 2 seconds,

diagnostic fre-

quency controlled

by sensor

Sensor fault or

warning code

(Note 4)

Cycle Excel power and conrm “fault cleared.” If not, replace sensor.

W016

Sensor Instal-

lation Not

Complete

Excel Non-latching

XNX polls sensor

every 2 seconds,

diagnostic fre-

quency controlled

by sensor

Sensor fault or

warning code

(Note 4)

Check Excel alignment. Perform a zero calibration.

W018

General Diag-

nostics

Optima,

Excel

Non-latching

XNX polls sensor

every 2 seconds,

diagnostic fre-

quency controlled

by sensor

Sensor fault or

warning code

(Note 4)

Check sensor connections, check sensor operation, t replacement sen-

sor, replace personalty board.

W019

Sensor Inter-

nal 5V Power

Supply Defect

Excel Non-latching

XNX polls sensor

every 2 seconds,

diagnostic fre-

quency controlled

by sensor

Sensor fault or

warning code

(Note 4)

Remove and return to Honeywell for repair.

W020

Forced mA

Timeout

All Latching 1 second Forced mA

Indicates that a forced mA condition was left on for more than 15

minutes. No action required as mA operation will be returned to normal

automatically.

W021

Forced Relay

Timeout

All Latching 1 second

Forced

relay status,

1=Alarm1 on,

2=Alarm2 on,

4=Fault on

Indicates that a forced relay condition was left on for more than 15

minutes. No action required as relay operation will be returned to normal

automatically.

W022

mV Sensor

Calibration

Needed

mV Latching

When user

changes sensor

type or gas

1=new sensor,

2=changed

personality,

3=changed gas

Generated after accepting a new mV sensor or changing the mV sensor

type or changing the mV gas selection. This is a warning to user that a

span calibration should be performed. If a span calibration is not per-

formed, the default calibration values will be used.

XNX Universal Transmitter

Section 5 - Warnings/Faults

111

Warning Description

Applicable

Sensors

Latching / Non-Latching

Frequency of Diag-

nostic

Event History Data Action For Resolution

W023

Low Optical

Sample Signal

Excel Non-latching

XNX polls sensor

every 2 seconds,

diagnostic fre-

quency controlled

by sensor

Sensor fault or

warning code

(Note 4)

Check location for external interference or obstructions in the IR path.

Check sensor for dirty windows. Check Excel alignment. Check Beam

Block Low Signal Percentage setting in the transmitter.

W024

Reex Failure

Warning

ECC Latching

Dependent on

sensor, typically 8

hours; Once fault

is detected: every

15 minutes

0 ECC sensor is nearing end of life. Replace sensor.

W025

Safety variable

fail warning

All Latching 2 seconds Note 3 Contact Honeyewell Analytics Service Department.

XNX Universal Transmitter

Section 5 - Warnings/Faults

112

NOTES

Note 3:

Subtypes Decimal Description

Fault 2 Event

Bits

1

CRC error in safety critical RAM block

2

Error reloading safety critical RAM block from EEPROM

4

Error loading data from Personality board

8

Excel signal level has been below the low signal level

threshold for at least 24 hours

16

Excel beam blocked

32

Personality board error code > 0

64

Option board error code > 0

128

IR mA input > 1 mA and < 3.4 mA

256

IR mA input < 1.0 mA

512

IR forced 10 mA not within +/-1 mA

1024

gains from PGA don't match local copy

2048

error reading or writing EEPROM

4096

ECC reex failure

8192

RAM test failure

16384

Program memory CRC failure

32768

Op code test failure

Fault 3 Event

Bits

1 Interrupt integrity test failure

Note 4:

Optima and Excel fault and warning codes are displayed in the Event History data eld.

XNX Universal Transmitter

Section 5 - Warnings/Faults

113

5.2 Fault Messages

Fault Description

Appli-

cable

Sensors

Latching / Non-

Latching

Frequency of

Diagnostic

Event History Data Action For Resolution

F101

Unexpected Sen-

sor Reset

All Non-latching

ECC & mV: main

loop x2;

Optima & Excel: 2

seconds

Note 2. Optima or

Excel: Sensor fault or

warning code (Note 4)

If repeated, check supply voltage, check cable loop impedance, check

terminal connections

F103

XNX Temperature

Error

All Non-latching 2 seconds

XNX temperature

(Celsius)

Check location for heat sources. Fit with sunshade or other protec-

tion. Change the transmitter’s location. Check temperature in Info-

>Transmitter Status to ensure temperature is being measured properly.

F104

XNX 24 VDC Sup-

ply Bad

All Non-latching 2 seconds

XNX supply voltage

x1000

Check the wire of the 24V power supply to the transmitter and the power

supply operation.

F105

3.3VDC Supply

Bad on XNX, per-

sonality board, or

option board

All Non-latching 2 seconds

1=XNX,

2=Personality board,

3=Option board

Check Transmitter Status

F106

XNX Real Time

Clock Failure

All Non-latching 2 seconds

Total seconds since

Jan 1, 1970

Either clock was incorrectly set or the battery for the clock has failed.

Note: the clock will stop running on January 1, 2036.

F107

XNX Internal Fail-

ure (RAM, ROM,

EEPROM, Opcode)

All

Non-latching ex-

cept for EEPROM

error

At power up and

8 hours

Note 3 Contact Honeywell Analytics’ Service Department.

F108

XNX mA Output

Loop Failure

All Latching 2 seconds

mA output error (mea-

sured mA - set mA)

Check wiring of mA output from XNX. Check that switches S1 and S2 are

set correctly. Note that if F108 is not resolved quickly, an F149 (Internal

Communication Failure - mA) will also be generated. When the cause of

F108 is resolved, both the F108 and F149 will be cleared.

F109

Simulated Warn-

ing/Fault

All Non-latching Enabled by user 0 Performing an alarm/fault reset will clear all simulation.

F110

Sensor software

mismatch

Optima Latching

Only checked at

power up

Sensor rmware ver-

sion x10

Contact Honeywell Analytics’ Service Department.

F111

Negative Drift ECC, mV Non-latching 2 seconds

Raw gas concentra-

tion of sensor

Check sensor location for external interference. Perform zero calibra-

tion. If problem persists after zero calibration and no interference exists,

replace sensor.

Negative Drift; may

indicate a failed IR

sensor

Optima,

Excel

Non-latching

XNX polls sensor

every 2 seconds,

diagnostic fre-

quency controlled

by sensor

Sensor fault or warn-

ing code

Check sensor location for external interference. Perform zero calibra-

tion. If problem persists after zero calibration and no interference exists,

replace sensor.

XNX Universal Transmitter

Section 5 - Warnings/Faults

114

Fault Description

Appli-

cable

Sensors

Latching / Non-

Latching

Frequency of

Diagnostic

Event History Data Action For Resolution

F112

Sensor 24 VDC

Supply Bad

Optima,

Excel

Non-latching

XNX polls sensor

every 2 seconds,

diagnostic fre-

quency controlled

by sensor

Sensor fault or warn-

ing code (Note 4)

Check the wire of the 24V power supply to the transmitter and the power

supply operation. Also check the wiring between the transmitter and the

Optima/Excel.

F113

Sensor Internal

5V Power Supply

Defect

Excel Non-latching

XNX polls sensor

every 2 seconds,

diagnostic fre-

quency controlled

by sensor

Sensor fault or warn-

ing code (Note 4)

Remove and return to Honeywell for repair.

F114

Sensor Internal

Lamp Issue

Optima Latching

XNX polls sensor

every 2 seconds,

diagnostic fre-

quency controlled

by sensor

Sensor fault or warn-

ing code (Note 4)

Remove and return to Honeywell for repair.

F116

Sensor Internal

Failure

Optima,

Excel

Non-latching

XNX polls sensor

every 2 seconds,

diagnostic fre-

quency controlled

by sensor

Sensor fault or warn-

ing code (Note 4)

Remove and return to Honeywell for repair.

F117

Sensor Loop

Failure, (Sensor

is losing/has lost

mA output signal.

These are detected

by Optima and

Excel, F161 is de-

tected by XNX and

will usually occur

before F117.)

Optima,

Excel

Latching

XNX polls sensor

every 2 seconds,

diagnostic fre-

quency controlled

by sensor

Sensor fault or warn-

ing code (Note 4)

Check that supply voltage is stable. Check wiring between Optima/Excel

and the transmitter. Check loop impedance of wiring. Check that switch-

es S3 and S4 are set correctly. If the switch settings need to be changed,

power down the transmitter before changing the switch settings. Once

the problem has been resolved, a Soft Reset must be performed for the

Calibration menu to clear F117.

F118

Sensor Real Time

Clock issue

Excel Non-latching

XNX polls sensor

every 2 seconds,

diagnostic con-

trolled by sensor

Sensor fault or warn-

ing code (Note 4)

Reset “date and time” in Excel, recycle Excel power, and conrm “date

and time. If not retained, remove and return to Honeywell for repair.

XNX Universal Transmitter

Section 5 - Warnings/Faults

115

Fault Description

Appli-

cable

Sensors

Latching / Non-

Latching

Frequency of

Diagnostic

Event History Data Action For Resolution

F119

Cartridge Internal

Electrical Failure

ECC, mV Non-latching

XNX polls sensor

every 2 seconds,

diagnostic fre-

quency controlled

by sensor

Note 5

Check cartridge connections, check sensor operation, t replacement

cartridge, replace personality board.

F120 No Sensor

ECC, mV,

Optima,

Excel

Non-latching 2 seconds Note 2

Indicates a loss of communication with the sensor. Check that the sen-

sor type indicated in the part number matches the installed hardware.

Check the wiring between ECC sensors or Optima/Excel and the XNX.

F121

Wrong Cartridge,

error loading sen-

sor parameters

All Non-latching

At power up and

when cartridge is

changed

0 Contact Honeywell Analytics’ Service Department.

F122

General Diagnos-

tics

Optima,

Excel

Non-latching

XNX polls sensor

every 2 seconds,

diagnostic fre-

quency controlled

by sensor

Sensor fault or warn-

ing code (Note 4)

Check sensor connections, check sensor operation, t replacement sen-

sor, replace personalty board.

F123

Sensor Tempera-

ture Error

Optima Non-latching

Sensor fault or warn-

ing code (Note 4)

Check location for heat sources. Fit with sunshade or other protection.

Change location of the transmitter. Check temperature in Info->Sensor

Status to ensure temperature is being measured properly.

Sensor Tempera-

ture Error

Excel Non-latching

XNX polls sensor

every 2 seconds,

diagnostic fre-

quency controlled

by sensor

Sensor fault or warn-

ing code (Note 4)

Check location for heat sources. Fit with sunshade or other protection.

Change location of the transmitter. Check temperature in Info->Sensor

Status to ensure temperature is being measured properly.

Sensor Tempera-

ture Error

ECC Non-latching 2 seconds

Sensor temperature

(Celsius)

Check location for heat sources. Fit with sunshade or other protection.

Change location of XNX. Check temperature in Info->Sensor Status to

ensure temperature is being measured properly.

F125

Calibration Re-

quired

All Non-latching 2 seconds

Number of days re-

maining until calibra-

tion expires, negative

= number of days

expired

Time since the last span calibration has exceeded a dened limit. Per-

forming a successful span calibration will clear the condition. The limit is

the maximum calibration interval.

XNX Universal Transmitter

Section 5 - Warnings/Faults

116

Fault Description

Appli-

cable

Sensors

Latching / Non-

Latching

Frequency of

Diagnostic

Event History Data Action For Resolution

F126

Sensor Path Ob-

scured

Optima Non-latching

XNX polls sensor

every 2 seconds,

diagnostic fre-

quency controlled

by sensor

Sensor fault or warn-

ing code (Note 4)

Check location for external interference. Check sensor for dirty windows.

F127 Beam Block Excel Non-latching

XNX polls sensor

every 2 seconds,

diagnostic fre-

quency controlled

by sensor

Sensor fault or warn-

ing code (Note 4)

Check location for external interference or obstructions in the IR path.

Check sensor for dirty windows. Check Excel alignment.

F128

Sensor Installation

Not Complete

Excel Non-latching

XNX polls sensor

every 2 seconds,

diagnostic fre-

quency controlled

by sensor

Sensor fault or warn-

ing code (Note 4)

Check Excel alignment. Perform a zero calibration.

F130

Option Communi-

cation Failure

All Non-latching 2 seconds

Option module ID:

0=None, 1=Foun-

dation

TM

Fieldbus,

2=Modbus

®

, 3=Relay

Check that installed option matches the option indicated in the XNX part

number. If the option has been changed, the new option must be set up

in Information->Transmitter Data as described in the manual.

F133 Not used

F143

Stabilization

Timeout

All Latching 2 seconds

Warm up time (sec-

onds x100)

Cycle power, contact Honeywell Analytics’ Service Department if prob-

lem persists.

F145 Reex Failure ECC Non-latching

Dependent on

sensor, typically 8

hours; Once fault

is detected: every

15 minutes

nA/mV ECC sensor is no longer functioning properly. Replace sensor.

F146

Unknown Sensor

Failure

Optima,

Excel

Non-latching 2 seconds

Sensor fault or warn-

ing code (Note 4)

Contact Honeywell Analytics’ Service Department.

F148

Internal option

board hardware

failure

All Non-latching 2 seconds

Option board error

status (Note 6)

Contact Honeywell Analytics’ Service Department.

XNX Universal Transmitter

Section 5 - Warnings/Faults

117

Fault Description

Appli-

cable

Sensors

Latching / Non-

Latching

Frequency of

Diagnostic

Event History Data Action For Resolution

F149

Internal 4-20 mA

monitoring circuit

communication

failure

All Non-latching 3.366 seconds 0 Contact Honeywell Analytics’ Service Department.

F150

mA Output Monitor

Communications

Watchdog Error

All Non-latching 138 us

Communication error

count

Contact Honeywell Analytics’ Service Department.

F151

Sensor Module

Type Changed

ECC Non-latching 2 seconds

Module type: 0=None,

1=ECC, 2=mV,

3=Excel, 4=Optima,

5=Generic mA

For ECC: Perform Accept New Sensor function, if problem persists

contact Honeywell Analytics’ Service Department. For others, contact

Honeywell Analytics’ Service Department.

F152

Option Module

Conguration Error

All Latching

Only at powerup

or every 125 ms

when no option

board detected

Option module ID:

0=None, 1=Founda-

tion Fieldbus, 2=Mod-

bus, 3=Relay

Conrm option properly installed, recongure unit.

F153

Signal/Data mis-

match error on IR

personality

Optima,

Excel

Non-latching 2 seconds Digital sensor reading

Check wiring to Optima/Excel. In particular, check the white wire be-

tween XnX and Optima/Excel. Note: power must be cycled to reset F153

after correcting the cause.

F154

mA Input Diagnos-

tic Failure

Optima,

Excel

Latching

5 minutes after

power up and

then every 8

hours

Input mA Contact Honeywell Analytics’ Service Department.

F155

Generic mA Sensor

Type Error

Generic

mA

Non-latching 2 seconds Input mA

Indicates that mA input from sensor is less than 3 mA. Check wiring

between XNX and sensor. Also check the switches S3 and S4 are set

correctly. If the switch settings need to be change, power down the XNX

before changing the switch settings. If wiring and switches are okay,

replace sensor.

F156

mV Current Control

Failure

mV Non-latching Main loop x16

constant current A/D

input mV

Check that correct mV sensor type is selected. Check wiring between

XNX and sensor. If sensor type and wiring are okay, replace sensor.

F157 Sensor Drift Fault ECC, mV Non-latching 2 seconds Current baseline Perform zero calibration. If problem persists, replace sensor.

F158

Sensor/Personal-

ity Part Number

mismatch

All Non-latching

"ECC & mV: main

loop x2;

Optima & Excel: 2

seconds"

Entire personality

part #

Check that installed option matches the option indicated in the XNX part

number, check wiring to Optima/Excel.

XNX Universal Transmitter

Section 5 - Warnings/Faults

118

Fault Description

Appli-

cable

Sensors

Latching / Non-

Latching

Frequency of

Diagnostic

Event History Data Action For Resolution

F159

Option Part Num-

ber Mismatch

All Non-latching

Only at powerup

or every 125 ms

when no option

board detected

Entire option part #

Check that installed option matches the option indicated in the XNX part

number, check wiring to Optima/Excel.

F160

Hardware Diagnos-

tic Failure

ECC, mV Non-latching Main loop x2

Gain1 high byte,

Gain2 low byte

Replace defective EC cartridge or mV personality board.

F161

mA Input Indicates

Fault

Optima,

Excel

Non-latching 1 second Input mA

Indicates mA input from Optima/Excel is below 1 mA, indicating a fault in

the sensor. Any other fault will also trigger this fault, so check for addi-

tional faults in event history to determine specic issue. If no other faults

indicated, check wiring between Optima/Excel and XNX. Also check that

switches S3 and S4 are set correctly.

F162

Error reloading

safety critical RAM

block

All Non-latching 2 seconds Note 3 Contact Honeywell Analytics’ Service Department.

F163

Interrupt integrity

fault

All Non-latching Main loop Note 3 XNX will reset if more than 600,000 successive errors occur.

F164 mV Sensor failure mV Latching 1 second

mV bridge voltage or

bridge current that

caused fault

Indicates that the sensor was changed or is bad. If the fault will not clear,

replace the sensor.

XNX Universal Transmitter

Section 5 - Warnings/Faults

119

Fault Description

Appli-

cable

Sensors

Latching / Non-

Latching

Frequency of

Diagnostic

Event History Data Action For Resolution

F165

mA Calibration

failure

all Latching 2 seconds

DAC: Digital to Analog

Converter (4-20 mA

output)

ADC: Analog to Digital

Converter (4-20 mA

internal feedback)

0 OK

1 DAC 4 mA point is

too low

2 DAC 4 mA point is

too high

4 DAC 20 mA point is

too low

8 DAC 20 mA point is

too high

16 ADC 4 mA point is

too low

32 ADC 4 mA point is

too high

64 ADC 20 mA point is

too low

128 ADC 20 mA point

is too high

Indicates that 4-20 mA calibration failed and discarded. Events history

parameter indicates which calibration point has failed. If 4-20 mA cali-

bration fails with F165, no changes take place so the 4-20 mA calibration

output stays as it was. Check 4-20 mA loop resistance. Repeat 4-20 mA

calibration. The fault clears itself after a successful 4-20 mA calibration.

XNX Universal Transmitter

Section 5 - Warnings/Faults

120

NOTES

Note 2:

Spi Event Bits

Decimal Description

1

SPI1 Starting TX

2

SPI1 transmitting

4

falling clock edge, 0 = rising edge

8

SPI1 port open, 0 = closed

16

SPI1 no response

32

SPI1 ECC no response

64

SPI1 missing data

128

Not used

256

SPI3 Starting TX

512

SPI3 transmitting

1024

falling clock edge, 0 = rising edge

2048

SPI3 port open, 0 = closed

4096

Not used8192

16384

32768

SPI2 Starting TX

XNX Universal Transmitter

Section 5 - Warnings/Faults

121

Note 3:

Subtypes Decimal Description

Fault 2

Event Bits

1 CRC error in safety critical RAM block

2 Error reloading safety critical RAM block from EEPROM

4 Error loading data from Personality board

8

Excel signal level has been below the low signal level

threshold for at least 24 hours

16 Excel beam blocked

32 Personality board error code > 0

64 Option board error code > 0

128 IR mA input > 1 mA and < 3.4 mA

256 IR mA input < 1.0 mA

512 IR forced 10 mA not within +/-1 mA

1024 gains from PGA don't match local copy

2048 error reading or writing EEPROM

4096 ECC reex failure

8192 RAM test failure

16384 Program memory CRC failure

32768 Op code test failure

Fault 3

Event Bits

1 Interrupt integrity test failure

XNX Universal Transmitter

Section 5 - Warnings/Faults

122

Note 4:

Optima and Excel fault and warning codes are displayed in the Event History data eld.

Note 5:

Subtypes Decimal Description

ECC Fault

Subtypes

1 I2C error reading or writing EEPROM

2 GALPAT RAM test failure

4 Program memory CRC failure

8 Opcode test failure

16 Can’t adjust PGA or EEPROM value doesn't match digital

pot

32 Reserved

64 Reserved

128 GALPAT RAM test failure in common area

mV Fault

Subtypes

1 I2C error reading or writing EEPROM

2 GALPAT RAM test failure

4 Program memory CRC failure

8 Opcode test failure

16

Can’t adjust PGA or EEPROM value doesn't match digital

pot

32 RAM safety variable failure

64 Interrupts integrity failure

128 Stack overow/underow failure

XNX Universal Transmitter

Section 5 - Warnings/Faults

123

Note 6:

Relay Option Board Error Status

Decimal Description

Relay Option Board Error

Status

1 Didn't receive STX or ETX

2 Received undened command

4 Exceeded maximum data bytes

8 Write collision or buffer overrun

16 CRC error in SPI packet

32 Stack overow or underow

64 Program memory CRC error

128 Galpat RAM test failure

XNX Universal Transmitter

Section 5 - Warnings/Faults

124

Number Description Contents of Data Field

I025

Alarms Congured Non-Latching N/A

I026

Alarm Relays Congured Normally

Energized

N/A

I027

Alarm Relays Congured Normally De-

Energized.

N/A

I028

Fieldbus Address Changed New address (e.g. 15)

I029

Fieldbus Speed Changed New speed (e.g. 19200)

I030

Sensor Type Changed iCurrentCalGlobalID

I031

Gas Selection Changed iCurrentCalGlobalID

I032

Time For Beam Block Fault Changed iBlockFltTime

I033

Time For Fault Detection Changed iOtherFltTime

I034

Level For Low Signal Fault Changed fLowSignalLevel

I035

Invalid Path Length Written fPathLen

I036

Path Length Changed fPathLen

I037

mA for Inhibit Changed f_mA_Flt_Step[0]

I038

mA for Warning Changed f_mA_Flt_Step[1]

I039

mA for Overrange Changed f_mA_Flt_Step[2]

I040

mA for Fault Changed f_mA_Flt_Step[3]

I041

mA for Low Signal Changed f_mA_Flt_Step[4]

I042

mA for Blocked Beam Changed f_mA_Flt_Step[5]

I043

Concentration for mA Full Scale Changed fDisplayRange

I044

Instrument Id Changed N/A

I045

Measuring Units Changed iMeasurementUnits

I046

Alarm 1 Recongured for Increasing

Concentrations

N/A

I047

Alarm 1 Recongured for Depleting

Concentrations

N/A

5.3 Informational Messages

Number Description Contents of Data Field

I001

Unused

I002

Force Relay Mode Started Bitpattern for relays. (E.G. 7.0 ==All)

I003

Force Relay Mode Ended. N/A

I004

Force mA Mode Started Force current. (E.G. 20.0)

I005

Force mA Mode Ended N/A

I006

Short-Term Inhibit Started N/A

I007

Short-Term Inhibit Ended N/A

I008

Long-Term Inhibit Started N/A

I009

Long-Term Inhibit Ended N/A

I010

mA Output Recalibrated N/A

I011

Bump Test Started N/A

I012

Bump Test Timed Out N/A

I013

Bump Test Completed Concentration < Al1 Peak concentration observed

I014

Bump Test Completed

Al1 < Concentration < Al2

Peak concentration observed

I015

Bump Test Completed. Al2 < Concentration Peak concentration observed

I016

Zero Calibration Successful N/A

I017

Zero Calibration Failed Error code

I018

Calibrate Span Successful 1 of 2 Percent change in span factor from previous

I019

Calibrate Span Successful 2 of 2 Absolute span factor

I020

Calibrate Span Failed Error code

I021

Calibrate Span Timeout N/A

I022

Password Changed 1,2 or 3 (access level)

I023

Performing Soft Reset N/A

I024

Alarms Congured Latching N/A

XNX Universal Transmitter

Section 5 - Warnings/Faults

125

Number Description Contents of Data Field

I048

Alarm 2 Recongured for Increasing

Concentrations

N/A

I049

Alarm 2 Recongured for Depleting

Concentrations

N/A

I050

Alarm 1 Value Changed fAlarmThres[0]

I051

Alarm 2 Value Changed fAlarmThres[1]

I052

Clock Set N/A

I053

Date Format Changed iDateFormat

I054

Sensor Boots N/A

I055

Unused

I056

Sensor RTC Adjusted Error in seconds or +/-999 if large

I057

Fault Set Latching

I058

Fault Set Non-Latching

I059

LCD Heater On

I060

LCD Heater Off

I061

Personality Power Up Sensor type

I062

Option Power Up Option type

I063

Loaded Same Cell

I064

Loaded Changed Cell

I065

Loaded Changed Gas

I066

Option Type Changed

I067

HART

®

Address Changed

I068

HART Mode Changed

XNX Universal Transmitter

Section 5 - Warnings/Faults

126

XNX Universal Transmitter

XNX Universal Transmitter Technical Manual

127

6 Specications

XNX Universal Transmitter

Section 6 - Specications

128

Electrical

Operating Voltage

EC/mV: 16V to 32V (24V nominal) ** Startup/Normal values **

IR: 18V to 32V (24V nominal) ** Startup/Normal values **

Power

Consumption

Conguration

Max

Power

Inrush

XNX EC 6.2 w <1A, <10ms@24VDC

XNX mV 6.5 w <750mA <2ms@24VDC

XNX IR (Optima) 9.7w <1A, <10ms@24VDC

XNX IR (Excel) 13.2w <1A, <10ms@24VDC

Termination

Crimp style pluggable with retaining screws, 12-28 AWG (2.5 to 0.5mm

2

) with

Shorting Jumpers: 14-28 AWG (2.0 to 0.5mm

2

)

NOTE:

To maintain EMC integrity, wiring must be shielded by either an integral shield

or run through conduit or pipe. Shield should provide 90% coverage

20 mA Signal

HART

®

over 3-wire 4-20mA (sink, source, or isolated) compliant with NAMUR

NE43

Cable Ports

5 – (2 right, 2 left, 1 bottom) Available in ¾” NPT, or M25

Recommended

Cable

See Section 2.2.2 Distance Considerations for Installation.

Construction

Material

LM25 Aluminum, (SS316 painted optional)

Dimensions

159 x 197 x 113.8 mm / 6.138 x 7.75 x 4.48 inches

Weight

2.27 kg (5 lb) Aluminum

5 kg (11 lb) Stainless

Mounting

XNX

®

Enclosure

Integral Mounting Lugs for Wall- or Optional Pipe-Mount, Optional Wall/Ceiling

Bracket

User Interface

Standard

Custom Backlit LCD, magnetic wand access

Optional

HART Handheld with IS Port

Environmental - Transmitter Operating

IP Rating

IP66

Temperature*

-40°C to +65°C / -40°F to +149°F

Humidity

0 to 99% RH non-condensing

*Operating temperatures will be limited by the sensors. See tables 6.2.2, 6.2.3, and 6.2.4 for more

information.

Environmental - Transmitter Storage

Temperature

-40°C to +65°C / -40°F to +149°F

Humidity

0 to 99% RH non-condensing

Unpowered battery life: (Real Time Clock) 3 years at rated storage temperature

6.1 Product Specications

XNX Universal Transmitter

129

Hazardous Area Approvals [See Section 6.2 Certifications by Part Number for other approvals (pending)]

XNX-UT**-*****

Class II, Div. 1 Groups F & G, Class II, Zone 20 & 21

FM Approvals Listed

AEx D IIB + H2 T6 -40 ºC ≤Tamb ≤65 ºC

AEx D [ia IIC} IIB + H2 T6 -40 ºC ≤Tamb ≤65 ºC (XNX UT*E-***** & XNX-UT*-*H****)

XNX-AM**-*****

UL/Demko 09 ATEX 0809943X / IEC Ex UL 09.0010X

II 2 D Ex tb IIIC T85 C Db

XNX-AM*E-***** & XNX-AM*-*H****

II 2 (1)D Ex tb [ia IIIC Da] IIIC T85 Db

XNX-BT**-*****

Class II, Div. 1 Groups F & G, Class II, Zone 20 & 21

INMETRO TUV 12.1018X

Ex d IIB + H2 T4 Gb IP 66 ≤ -40 ºC ta ≤+65 ºC

Ex d [ia IIC Ga] IIB + H2 T4 Gb IP 66 ≤-40 ºC ta ≤+65 ºC (XNX BT*E-***** & XNX-BT*-*H****)

FM Approvals Listed

AEx D IIB + H2 T6 -40 ºC ≤Tamb ≤65 ºC

AEx D [ia IIC} IIB + H2 T6 -40 º≤ Tamb ≤65 ºC (XNX BT*E-***** & XNX-BT*-*H****)

NOTES:

1. The temperature class (T6) is limited to T4 when the MPD sensor is attached locally to the transmitter.

2. XNX EC cartridges and Remote Mount Kit have been evaluated by Underwriters Laboratories (UL) to

Canadian National Standards.

3.

Peer to peer and multi-drop network (daisy chained) HART, Modbus®, and FoundationTM Fieldbus

Combustible Gas Detection and may be used only for diagnostics and data collection.

Performance Approvals

Communication Options

Relays

Type: 3 form “C” SPCO contacts for alarm and fault indication.

Rating: 250 VAC, 5A/24 VDC, 5A (2 Alarm, 1 Fault)

A remote reset is provided to silence alarms. (The Foundation Fieldbus, relay, and

Modbus options are mutually exclusive.)

Modbus

Modbus/RTU over RS-485 physical layer. Interface isolated; includes switchable

120 Ohm termination resistor.

Baud rates: 1200 to 38,400; 19,200 default.

(The Foundation Fieldbus, relay, and Modbus options are mutually exclusive.)

Foundation

Fieldbus

H1 Physical Layer.

31.25 kbit/s Manchester encoded signal.

AMIS-49200 Fieldbus MAU (media access unit).

SPC4-2 Fieldbus Controller.

Do not use Fieldbus communication in hazardous areas.

The Foundation Fieldbus, Relay, and Modbus options are mutually exclusive.

Class I, Div. 1 Groups A, B, C & D Class I, Zone 1 Group IIC

II 2 G Ex d IIC T6 (Tamb -40 °C to +65 °C) IP 66

II 2 (1)G Ex d [ia IIC Ga] IIc T6 (Tamb -40 °C to +65 °C) IP 66

Class I, Div. 1 Groups A, B, C & D Class I, Zone 1 Group IIC

Ex tb [ia IIC Da] IIIc T85 Db

Ex tb IIIC 85° Db

XNX Universal Transmitter

Section 6 - Specications

130

See Section 6.2 Certifications by Part Number for other approvals

6.2 Sensor Data

6.2.1 Operating and Storage Conditions for Performance Tested EC Cartridges

Gas

Cartridge

P/N

Operating Pres-

sure

Operating Air

Speed

Warm-up Time

(minimum)

Storage Conditions*

Temperature Pressure Humidity Time**

O

2

Oxygen

XNXXSO1SS

80 kPa ~ 120 kPa 0 ~ 6 m/sec 60 sec. 0 to 20°C, 32 to 68°F 80 to 120 KPa 5 to 95% RH 6 months

XNXXSO1FM

H

2

S Hydrogen Sulfide

XNXXSH1SS

80 kPa ~ 120 kPa 0 ~ 6 m/sec 60 sec. 0 to 20°C, 32 to 68°F 70 to 110 KPa 30 to 70% RH 6 months

XNXXSH1FM

H

2

S (High) Hydrogen Sulfide XNXXSH2SS 80 kPa ~ 120 kPa 0 ~ 6 m/sec 60 sec. 0 to 20°C, 32 to 68°F 70 to 110 KPa 30 to 70% RH 6 months

CO Carbon Monoxide

XNXXSC1SS

80 kPa ~ 120 kPa 0 ~ 6 m/sec 60 sec. 0 to 20°C, 32 to 68°F 70 to 110 KPa 30 to 70% RH 6 months

XNXXSC1FM

*Store in sealed packages **Check cartridge certificates

XNX Universal Transmitter

Section 6 - Specications

131

6.2.2 EC Sensor Performance Data, Factory Mutual Veried (see Section 6.3)

Gas Cartridge P/N

Selectable Full

Scale Range (Dis-

play and 4-20mA

Full Scale)

Default

Range

Incre-

ments

Lower

Alarm

Limit

Lower

Detection

Limit

Lower

Explosive

Limit

(% Vol)

Zero

Deviation

Selectable

Cal Gas

Range

Default

Cal Point

Response

Time (T50)

sec

Response

Time (T90)

sec

Accuracy

Operating Temperature Operating Humidity

Min Max Min Max

O

2

Oxygen XNXXSO1FM n/a 23.0% Vol n/a 5.0%Vol 5% Vol n/a n/a

20.9 %Vol

(fixed)

20.9 %Vol T20 <10 <30 <+/-0.5 %Vol -30°C / -34°F 55°C /131°F 15% RH 90% RH

H

2

S Hydrogen Sulfide XNXXSH1FM 10.0 to 50.0 ppm 15.0 ppm 0.1 ppm 5.0 ppm 1.5 ppm n/a -2.5 ppm

30 to 70%

of the

selected full

scale range

10 ppm <20 <30

2 ppm or 10% of

reading, whichever is

greater

-40°C / -40°F 55°C / 131°F 15% RH 90% RH

CO Carbon Monoxide XNXXSC1FM

1

100 to 1000 ppm 300 ppm 100 ppm 30 ppm 15 ppm na/ -25 ppm 100 ppm <15 <30 See footnote 1 -40°C / -40°F 55°C / 131°F 15% RH 90% RH

FOOTNOTES:

1. XNXXSC1FM accuracy over temperature <±10% of reading 20°C/68°F to 55°C/131°F, <±20% of reading 20°C/68°F to -10°C/14°F, <±30% of reading -10°C/14F to -20°C/-4°F.

Recalibration is recommended if the temperature of the local environment has varied by more than -30°C.

NOTES:

• Performanceguresaremeasuredbytestunitscalibratedat50%offullscale,atambientconditionsof20°C,50%RH,withtheECweatherproofcoverattached

• IP rating of FM Cartridges is IP63.

• Barometric pressure effects on the O

2

sensor: The output from the O

2

sensor has pressure effects of <0.1% change of output per % change in pressure. When the barometric

pressure changes by ±20% the output from the O

2

sensorchanges<±0.4%Vol.However,theoxygensensorshowstransientbehaviorwhensubjectedtoarapidchangein

ambientpressureduetoeitherweatheroraltitude.Forexample,a10KPainstantaneouspositivepressurestepchangemaycauseanoverscalealarmconditionforaperiod

of about 12 seconds.

• OperatingtheXNXECsensoratextendedtemperaturerangesforaprolongedtimeperiodexceeding12hoursmycausedeteriorationinthesensorperformanceandshorten

sensorlife.ExtendedtemperaturerangeforXNXECsensorsis-40°Cot-20°C.

• Responsetimesmayincreaseatlowertemperatures.

• FM performance verification is limited to the requirements of the standards identified in Table 6.3 for each cartridge.

• ContactHoneywellAnalyticsforadditionaldataordetails.

XNX Universal Transmitter

Section 6 - Specications

132

6.2.3 EC Sensor Performance Data, DEKRA EXAM veried (see Section 6.3)

Gas Cartridge P/N

Selectable Full

Scale Range (Dis-

play and 4-20mA

Full Scale)

Default

Range

Incre-

ments

Lower

Alarm

Limit

Lower

Detection

Limit

Zero

Variation

Selectable

Cal Gas

Range

Default Cal

Point

Response

Time (T50)

(sec)

T90 Response

T10 Recovery

Time (sec)

Accuracy

1

Operating Temperature Operating Humidity

Min Max Min Max

O

2

Oxygen XNXXSO1SS n/a 25.0 %Vol n/a 5.0%Vol 3.5 %Vol n/a

20.9 %Vol

(fixed)

20.9 %Vol T20 <10 <30 <+/-0.6 %Vol -30°C / -34°F 55°C /131°F 15% RH 90% RH

H

2

S

Hydrogen

Sulfide

XNXXSH1SS 10.0 to 50.0 ppm 15.0 ppm 0.1ppm 3.0 ppm 1.0 ppm 2.0 ppm

30 to 70%

of the

selected full

scale range

10 ppm <20 <30 <+/-0.3 ppm -40°C / -40°F 55°C / 131°F 15% RH 90% RH

H

2

S (High)

Hydrogen

Sulfide

XNXXSH2SS 50 to 500 ppm 100 ppm 10 ppm 5 ppm 1 ppm 2 ppm 50 ppm <20 <30 <+/-5 ppm -40°C / -40°F 55°C / 131°F 15% RH 90% RH

CO

Carbon

Monoxide

XNXXSC1SS 100 to 500 ppm 300 ppm 100 ppm 15 ppm 5 ppm 10 ppm 100 ppm <15 <30 <+/-2 ppm -40°C / -40°F 55°C / 131°F 15% RH 90% RH

FOOTNOTE:

1.AccuracyofreadingatdefaultAlarm1concentration(typically10%FSordefinedminimumalarmlevelsetting,whicheverisgreater)whenoperatedatdefaultfullscale.

NOTES:

• SensordriftbetweenLDLandnegativedriftfaultlimits(typcially>negativezerovariation)appearas0onthedisplayandoutputsofthedevice.

• Long-termdrift:XNXXSC1SS<5%/year,XNXXSO1SS<4%/year,XNXXSH1SSandXNXXSH2SS<2%/month.

• Performanceguresaremeasuredbytestunitscalibratedat50%offullscale,atambientconditionsof20°C,50%RH,withtheECweatherproofcoverattached.

• OperatingtheXNXECsensoratextendedtemperaturerangesforaprolongedtimeperiodexceeding12hoursmaycausedeteriorationinsensorperformanceandshorten

sensorlife.ExtendedtemperaturerangesforXNXECsensorcartridgesare-40°Cto-20°C.

• Barometric pressure effects on the O

2

sensor: The output from the O

2

sensor has pressure effects of <0.1% change of output per % change in pressure. When the barometric

pressure changes by ±20%, the output from the O

2

sensorchanges<±0.4%Vol.However,theoxygensensorshowstransientbehaviorwhensubjectedtoarapidchangein

ambientpressureduetoeitherweatheroraltitude.Forexample,a10KPainstantaneouspositivepressurestepchangemaycauseanoverscalealarmconditionforaperiod

of about 12 seconds.

• Responsetimesmayincreaseatlowertemperatures.

• ContactHoneywellAnalyticsforanyadditionaldataordetails.

XNX Universal Transmitter

Section 6 - Specications

133

6.2.4 Other EC Sensors

Gas Cartridge P/N

Selectable Full

Scale Range

(Display and

4-20mA Full

Scale)

Default

Range

Incre-

ments

Lower

Alarm

Limit

Lower

Detection

Limit

Zero

Deviation

Selectable

Cal Gas

Range

Default

Cal Point

Response

Time (T50)

sec

Response

Time

(T90) sec

Accuracy

1

Typical

Accuracy

@ Lowest

Alarm

Level

Operating Temperature Operating Humidity

Min Max Min Max

HCl Hydrogen Chloride XNXXSR1SS 10.0 to 20.0 ppm 10.0 ppm 1.0 ppm 5.0 ppm 0.6 ppm -1.0 ppm

30 to 70%

of the

selected full

scale range

5.0 ppm

<45

2, 3

<150

2, 3

<+/-1.0 ppm or

20%

of applied gas

2, 3

<+/-1.0 @

3 ppm

-20°C/-4°F 40°C/104°F 15% RH 90% RH

H

2

S (Low) Hydrogen Sulfide XNXXSH3SS n/a 15.0 ppm n/a 3.0 ppm 1.0 ppm -2.5 ppm 10 ppm <20 <40 <+/-0.3 ppm

<+/-0.3 @

3 ppm

-40°C / -40°F 55°C / 131°F 15% RH 90% RH

SO

2

Sulfur Dioxide XNXXSS1SS 5.0 to 20.0 ppm 15.0 ppm 5.0 ppm 2.0 ppm 0.6 ppm -1.0 ppm 5.0 ppm <15 <30 <+/-0.3 ppm

<+/-0.3 @

2 ppm

-40°C / -40°F 55°C / 131°F 15% RH 90% RH

SO

2

(High) Sulfur Dioxide XNXXSS2SS 20.0 to 50.0 ppm 50.0 ppm 10.0 ppm 5.0 ppm 1.5 ppm -2.5 ppm 25 ppm <15 <30 <+/-0.6 ppm

<+/-0.6 @

5 ppm

-40°C / -40°F 55°C / 131°F 15% RH 90% RH

NH

3

Ammonia XNXXSA1SS 50 to 200 ppm 200 ppm 50 ppm 20 ppm 6 ppm -10 ppm 100 ppm <60 <180 <+/-4 ppm

<+/-4 @

20 ppm

-20°C / -4°F 40°C / 104°F 15% RH 90% RH

NH

3

(High) Ammonia XNXXSA2SS 200 to 1000 ppm 1,000 ppm 50 ppm 100 ppm 30 ppm -50 ppm 300 ppm <60 <180 <+/-20 ppm

<+/-20 @

100 ppm

-20°C / -4°F 40°C / 104°F 15% RH 90% RH

Cl

2

Chlorine XNXXSL2SS n/a 5.00 ppm n/a 0.50 ppm 0.15 ppm -0.25 ppm 2.0 ppm <20 <60 <+/-0.2 ppm

<+/-0.20 @

0.50 ppm

-10°C / 14°F 55°C / 131°F 15% RH 90% RH

Cl

2

(High) Chlorine XNXXSL1SS 5.0 to 20.0 ppm 5.0 ppm 5.0 ppm 1.0 ppm 0.6 ppm -1.0 ppm 2.0 ppm <20 <30 <+/-0.2 ppm

<+/-0.2 @

1 ppm

-10°C / 14°F 55°C / 131°F 15% RH 90% RH

ClO

2

Chlorine Dioxide XNXXSX1SS n/a 1.00 ppm n/a 0.10 ppm 0.03 ppm -0.05 ppm 0.5 ppm <30 <120 <+/-30%

<+/-0.03 @

0.1 ppm

-20°C / -4°F 55°C / 131°F 15% RH 90% RH

NO

Nitrogen

Monoxide

XNXXSM1SS n/a 100 ppm n/a 10 ppm 3 ppm -5 ppm 50 ppm <15 <30 <+/-2 ppm

<+/-2.0 @

10 ppm

-20°C / -4°F 55°C / 131°F 15% RH 90% RH

NO

2

Nitrogen Dioxide XNXXSN1SS 5.0 to 50.0 ppm 10.0 ppm 5.0 ppm 5.0 ppm 1.5 ppm -2.5 ppm 5 ppm <15 <30 <+/-0.2 ppm

<+/-0.2 @

5 ppm

-20°C / -4°F 55°C / 131°F 15% RH 90% RH

H

2

Hydrogen XNXXSG1SS n/a 1,000 ppm n/a 100 ppm 30 ppm -50 ppm 500 ppm <60 <90

2

<+/-8 ppm

<+/-8 @

100 ppm

-20°C / -4°F 55°C / 131°F 15% RH 90% RH

H

2

(High) Hydrogen XNXXSG2SS n/a

10,000

ppm

n/a 1000 ppm 300 ppm -500 ppm 5000 ppm <15 <30 <+/-150 ppm

<+/-150 @

1000 ppm

-20°C / -4°F 55°C / 131°F 15% RH 90% RH

HF Hydrogen Fluoride XNXXSF1SS n/a 12.0 ppm n/a 1.5 ppm 0.4 ppm -0.6 ppm 5.0 ppm 120 <240 <+/-0.5 ppm

<+/-0.5 @

1.5 ppm

-20°C / -4°F 55°C / 131°F 20% RH 75% RH

PH

3

Phosphine XNXXSP1SS n/a 1.20 ppm n/a 0.15 ppm 0.04 ppm -0.06 ppm 0.5ppm <15 <30 <+/- 0.02 ppm

<+/-0.02 @

0.15 ppm

-20°C / -4°F 40°C / 104°F 10% RH 90% RH

see footnotes and notes on following page

XNX Universal Transmitter

Section 6 - Specications

134

FOOTNOTES (SEE TABLE ON PREVIOUS PAGE):

1.AccuracyofreadingatdefaultAlarm1concentration(typically10%FSordefinedminimumalarmlevelsetting,whichevergreater)whenoperatedatdefaultfullscale.

2.Systemconditioningmayberequiredtoachievestatedresults.ContactHoneywellAnalyticsfordetails.

3.Measuredusingcalibrationflowhousingatcalibrationflowrate(300-375ml/min)withdrygas.

NOTES (SEE TABLE ON PREVIOUS PAGE):

• Datatakenatambientconditionsof20°C,50%RH.

• Datarepresentstypicalvaluesoffreshlycalibratedsensorswithoutoptionalaccessoriesattached.

• Performanceguresaremeasuredbytestunitscalibratedat50%offullscale.

• Standard temperaturerangeforXNXECSensorsis-20°Cto+55°C;ATEX,IECEx.

• ExtendedtemperaturerangesfortheXNXECSensorsare-40°Cto-20°C

• Accuracybetweenthetemperaturesof-40°Cand-20°Cis±30%attheappliedgasconcentration.

• OperatingtheXNXECSensorsatextendedtemperaturerangesforaprolongedtimeperiodexceeding12hoursmaycausedeteriorationinsensorperformanceandshorter

sensor life.

• Barometric pressure effects on the O

2

sensor: The output from the O

2

sensor has pressure effects of <0.1% change of output per % change in pressure. When the barometric

pressure changes by ±20% the output from the O

2

sensorchanges<±0.4%Vol.However,theoxygensensorshowstransientbehaviorwhensubjectedtoarapidchangein

ambientpressureduetoeitherweatheroraltitude.Forexample,a10KPainstantaneouspositivepressurestepchangemaycauseanoverscalealarmconditionforaperiod

of about 12 seconds.

• Recalibration is recommended if the temperature of local environment has varied by more than ±15°C from the temperature of calibration.

• Responsetimesmayincreaseatlowertemperatures.

• ContactHoneywellAnalyticsforanyadditionaldataordetails.

XNX Universal Transmitter

Section 6 - Specications

135

6.2.5 XNX EC Sensor Cross-sensitivity

Gas type Part Number Gas Type Applied Concentration Unit Reading Unit

O

2

XNXXS01SS

XNXXSO1FM

Carbon Dioxide 5 %vol 0.1

%vol (change O

2

reading) per %vol CO

2

HCl XNXXSR1SS

Carbon monoxide 2000

ppm

0

ppm HCl

Hydrogen 20000 0

Chlorine 5 5.6

Nitrogen dioxide 5 0.9

Propan-2-ol 500 0

Methanol 500 0

Hydrogen fluoride 5 6.7

Hydrogen suflfide 25 -3.6

Sulphur dioxide 50 22.4

Arsine 1 0

Phosphine 1 -0.14

Diborane 1 -1.3

H

2

S

(Low Range)

XNXXSH3SS

Ammonia 50

ppm

0 ppm H

2

S

Carbon Monoxide 100 <2 ppm H

2

S

Carbon Dioxide 5000 0 ppm H

2

S

Chlorine 0.5 0 ppm H

2

S

Ethylene 100 0 ppm H

2

S

Hydrogen 100 0 ppm H

2

S

Hydrogen Sulfide 10 10 ppm H

2

S

Nitrogen Monoxide 25 0 ppm H

2

S

Nitrogen Dioxide 3 0 ppm H

2

S

Sulfur Dioxide 2 0 ppm H

2

S

XNX Universal Transmitter

Section 6 - Specications

136

Gas type Part Number Gas Type Applied Concentration Unit Reading Unit

H

2

S

XNXXSH1SS

XNXXSH1FM

Ammonia 50

ppm

0 ppm H

2

S

Carbon Monoxide 100 <2 ppm H

2

S

Carbon Dioxide 5000 0 ppm H

2

S

Chlorine 0.5 0 ppm H

2

S

Ethylene 100 0 ppm H

2

S

Hydrogen 100 0 ppm H

2

S

Hydrogen Sulfide 10 10 ppm H

2

S

Nitrogen Monoxide 25 0 ppm H

2

S

Nitrogen Dioxide 3 0 ppm H

2

S

Sulfur Dioxide 2 0 ppm H

2

S

H

2

S

(High Range)

XNXXSH2SS

Ammonia 50

ppm

0 ppm H

2

S

Carbon Monoxide 100 <2 ppm H

2

S

Carbon Dioxide 5000 0 ppm H

2

S

Chlorine 0.5 0 ppm H

2

S

Ethylene 100 0 ppm H

2

S

Hydrogen 100 0 ppm H

2

S

Hydrogen Sulfide 10 10 ppm H

2

S

Nitrogen Monoxide 25 0 ppm H

2

S

Nitrogen Dioxide 3 0 ppm H

2

S

Sulfur Dioxide

2 0 ppm H

2

S

XNX Universal Transmitter

Section 6 - Specications

137

Gas type Part Number Gas Type Applied Concentration Unit Reading Unit

CO

XNXXSC1SS

XNXXSC1FM

Acetone 1000

ppm

0 ppm CO

Acetylene 40 80 ppm CO

Ammonia 100 0 ppm CO

Carbon Monoxide 100 100 ppm CO

Chlorine 2 0 ppm CO

Ethanol 2000 3 ppm CO

Ethylene 100 85 ppm CO

Hydrogen 100 20 ppm CO

Hydrogen Sulfide 25 0 ppm CO

Iso-Propanol 200 0 ppm CO

Nitrogen Monoxide 50 8 ppm CO

Nitrogen Dioxide 800 20 ppm CO

Sulfur Dioxide 50 0.5 ppm CO

SO

2

XNXXSS1SS

Carbon Monoxide 300

ppm

<3 ppm SO

2

Hydrogen Sulfide 15 0 ppm SO

2

Nitrogen Monoxide 35 0 ppm SO

2

Nitrogen Dioxide 5 ~-5 ppm SO

2

SO

2

XNXXSS2SS

Carbon Monoxide 300

ppm

<3 ppm SO

2

Hydrogen Sulfide 15 0 ppm SO

2

Nitrogen Monoxide 35 0 ppm SO

2

Nitrogen Dioxide 5 ~-5 ppm SO

2

XNX Universal Transmitter

Section 6 - Specications

138

Gas type Part Number Gas Type Applied Concentration Unit Reading Unit

NH

3

XNXXSA1SS

Alcohols 1000

ppm

0 ppm NH

3

Carbon Dioxide 5000 0 ppm NH

3

Carbon Monoxide 100 0 ppm NH

3

Hydrocarbons % range 0 ppm NH

3

Hydrogen 10000

ppm

0 ppm NH

3

Hydrogen Sulfide 20 2 ppm NH

3

NH

3

(High Range)

XNXXSA2SS

Alcohols 1000

ppm

0 ppm NH

3

Carbon Monoxide 100 0 ppm NH

3

Chlorine 5 0 ppm NH

3

Nitrogen Dioxide 10 0 ppm NH

3

Sulfur Dioxide 20 -40 ppm NH

3

Hydrogen 3000 0 ppm NH

3

Hydrogen Sulfide 20 20 ppm NH

3

Cl

2

XNXXSL2SS

Carbon Dioxide 20000

ppm

0 ppm Cl

2

Hydrogen Chloride 9 1.25 ppm Cl

2

Hydrogen Sulfide 25 -16.3 ppm Cl

2

Nitrogen Dioxide 50 1.25 (transient) ppm Cl

2

Sulfur Dioxide 50 9.1 ppm Cl

2

Cl

2

(High Range)

XNXXSL1SS

Carbon Dioxide 20000

ppm

0 ppm Cl

2

Hydrogen Chloride 9 1.25 ppm Cl

2

Hydrogen Sulfide 25 -16.3 ppm Cl

2

Nitrogen Dioxide 50 1.25 (transient) ppm Cl

2

Sulfur Dioxide 50 9.1 ppm Cl

2

ClO

2

XNXXSX1SS Refer To Cl2 Refer to Cl

2

Refer to Cl

2

Refer to Cl

2

Refer to Cl

2

XNX Universal Transmitter

Section 6 - Specications

139

Gas type Part Number Gas Type Applied Concentration Unit Reading Unit

NO XNXXSM1SS

Carbon Monoxide 300

ppm

0 ppm NO

Sulfur Dioxide 5 0 ppm NO

Nitrogen Dioxide 5 <1.5 ppm NO

Hydrogen Sulfide 15 ~1.5 ppm NO

NO

2

XNXXSN1SS

Carbon Monoxide 300

ppm

0 ppm NO

2

Hydrogen Sulfide 15 ~ -1.2 ppm NO

2

Sulfur Dioxide 5 0 ppm NO

2

Nitrogen Monoxide 35 0 ppm NO

2

Chlorine 1 ~1 ppm NO

2

H

2

XNXXSG1SS

Carbon Monoxide 300

ppm

< 60 ppm H

2

Hydrogen Sulfide 15 <3 ppm H

2

Sulfur Dioxide 5 0 ppm H

2

Nitrogen Monoxide 35 »10 ppm H

2

Nitrogen Dioxide 5 0 ppm H

2

Chlorine 1 0 ppm H

2

Hydrogen Cyanide 10 »3 ppm H

2

Hydrogen Chloride 5 0 ppm H

2

Ethylene 100 »80 ppm H

2

XNX Universal Transmitter

Section 6 - Specications

140

Gas type Part Number Gas Type Applied Concentration Unit Reading Unit

H

2

(High Range) XNXXSG2SS

Ammonia 100 ppm 0 ppm H

2

Arsine 0.2 ppm 0 ppm H

2

Carbon Dioxide 1000 ppm 0 ppm H

2

Carbon Monoxide 100 ppm 150 ppm H

2

Chlorine 1 ppm 0 ppm H

2

Ethylene 500 ppm yes; n/d ppm H

2

Hydrogen Cyanide 20 ppm 0 ppm H

2

Hydrogen Sulfide 20 ppm 4 ppm H

2

Iso-Propanol 1100 ppm yes; n/d ppm H

2

Methane 1 % 0 ppm H

2

Nitrogen Dioxide 10 ppm -40 ppm H

2

Ozone 0.25 ppm 0 ppm H

2

Sulfur Dioxide 5 ppm 0 ppm H

2

HF XNXXSF1SS

Carbon Monoxide 2000 ppm 0 ppm HF

Hydrogen 20000 ppm 0 ppm HF

Chlorine 5 ppm 5.8 ppm HF

Nitrogen Dioxide 5 ppm 0.65 ppm HF

Iso-Propanol 500 ppm 0 ppm HF

Methanol 500 ppm 0 ppm HF

Hydrogen Fluoride 5 ppm 7 ppm HF

Hydrogen Sulfide 25 ppm -3.6 ppm HF

Sulfur Dioxide 50 ppm

28.3 ppm HF

Arsine 1 ppm 0 ppm HF

Phosphine 1 ppm -0.14 ppm HF

Diborane 1 ppm -1.3 ppm HF

XNX Universal Transmitter

Section 6 - Specications

141

Gas type Part Number Gas Type Applied Concentration Unit Reading Unit

PH

3

XNXXSP1SS

Carbon Monoxide 2000 ppm <10 ppm PH

3

Hydrogen 5000 ppm <10 ppm PH

3

Chlorine 1 ppm -70 ppm PH

3

Nitrogen Dioxide 8 ppm -860 ppm PH

3

Ethanol 2000 ppm <10 ppm PH

3

Iso-Propanol 1000 ppm <10 ppm PH

3

Hydrogen Chloride 10 ppm <10 ppm PH

3

Hydrogen Fluoride 10 ppm <10 ppm PH

3

Hydrogen Sulfide 0.5 ppm 70 ppm PH

3

Ammonia 100 ppm 1050 (transient) ppm PH

3

Sulfur Dioxide 50 ppm 550 (transient) ppm PH

3

Silane 1 ppm 364 ppm PH

3

Arsine 1 ppm 680 ppm PH

3

Diborane 1 ppm 454 ppm PH

3

Germane 1 ppm 454 ppm PH

3

NOTES:

• Theguresofcross-sensitivityaretypicalvaluesandshouldnotbeusedasabasisforcrosscalibration.

• Cross-sensitivities may not be linear and should not be scaled.

• For some cross-interferentsbreakthroughmayoccurifgasisappliedalongertimeperiod.

• Therearemanygasesandvaporsthatcanpoisonelectochemicalcells.Itisdifculttogiveacompleteandexclusivelistofallspecies

whichwillhaveaneffectonthesensors.However,thesearesomecommonsubstanceswhichshouldbeavoided:

• Airbornegreases-Thesemayblockgasaccessintothesensorsandthereforereducesensitivity.

• Siliconecompounds-Theseareoftenfoundinsprays,aerosols,lubricants,polishes,adhesives,sealants,zebrastrip,cleaningagents,

andoorwaxes.Thesecompoundstendtoreducethesensitivityofthesensorsandgenerallywillhaveapermanenteffect.

• Solvents and organicvapors-Manyorganicvaporswilldamagethesensors.SomecommononesareIPA,toluene,xylene,other

benzinederivatives,petrol,anddiesel.Itisdifculttogiveafulllistoforganicvapors,astherearesomanyofthem.Generally,any

organic vapor should be avoided.

XNX Universal Transmitter

Section 6 - Specications

142

6.2.6 XNX MPD Sensor Performance Data

Sensor

Type

Gas

Typical

Response

Time

(T50) sec

Typical

Response

Time

(T90) sec

Maximum

Range

Accuracy

(% of full scale or

% of applied gas)

Drift

Over

Time

Operating

Humidity

Operating Temperature

Operating

Pressure

Operating

Air Speed

Min Max

MPD-IC1 Carbon Dioxide <30 <70

5.00 %Vol

±5%FS or ±15% < 3%/yr

0-95%

RH non-

condensing

-20°C / -4°F +50°C / 122°F 80kPa ~ 110kPa 0 ~ 6m/sec

MPD-IV1 Methane <15 <30

5.00 %Vol

±5%FS or ±15% < 3%/yr -20°C / -4°F +50°C / 122°F 80kPa ~ 110kPa 0 ~ 6m/sec

MPD-IF1 Propane <15 <30

100 %LEL

±5%FS or ±15% < 3%/yr -20°C / -4°F +50°C / 122°F 80kPa ~ 110kPa 0 ~ 6m/sec

MPD-CB1

Propane <15 <30

100 %LEL

±5%FS or ±15% < 3%/yr

-40°C /

-40°F

+65°C / 149°F 80kPa ~ 120kPa 0 ~ 6m/sec

Methane <10 <30

Hydrogen <10 <30

Butane-2 <15 <40

Nonane <20 <50

NOTES:

• Responsetimesmayvarydependinguponmolecularweight,size,andstructure.

• CSAapprovedhydrogensensorsareMPDUT-CB1and705STD.

• DEKRAEXAMapprovedsensorsareMPDAMCB1andSPHT

• Datatakenat20-25°C.ContactHoneywellAnalyticsforadditionaldataordetails.

• Responsetimesmayincreaseatlowertemperatures.

• Datarepresentstypicalvalueswithoutoptionalaccessoriesattached.

• Systemconditioningmayberequiredtoachievestatedresults.ContactHoneywellAnalyticsfordetails.

• Performanceguresaremeasuredusingasamplehumidityof50%RH.

• Performanceguresaremeasuredbetween40and60%offullscale.

• Performanceguresaremeasuredbytestunitscalibratedat50%offullscale.

• Useoftheweatherproofcapwillincreaseresponsetimes.

• FM6340performanceapprovalbasedonMPD-IC1withSPXCDWPT50<60T90<150.

• Useoftheweatherproofcapwillincreaseresponsetimes.

• FM6340performanceapprovalbasedonMPD-IC1withSPXCDWPT50<60T90<150.

XNX Universal Transmitter

Section 6 - Specications

143

6.2.7 EN60079-29-1 Performance Approved Gases for mV Sensor Types

Sensor Type

EN60079-29-1

Reference

Veried Gas Selections

Hydrogen Methane-2 Propane-2 Butane-2 Star 2 Star 4

MPD AMCB1

Standard Test Gas

l l

Other Gases

l l

n-nonane

SP-HT

Standard Test Gas

l l

Other Gases

l l

n-nonane

Max Zero Deviation (see note 1) -7% LEL -9% LEL -7% LEL

LDL (see note 2) 3% LEL 5% LEL 3% LEL

NOTES:

1. Readings<0%LELarenotdisplayedorindicatedonthe20mAoutput.ValuesexceedingthezerodeviationlimitwillresultinF111faults.

2. Readings<LDLareshownas0%onthedisplayand20mAoutput.

6.2.8 Other Sensor Performance Data

Performance data for other supported sensors is available in their respective technical manuals.

XNX Universal Transmitter

Section 6 - Specications

144

6.3 XNX Certications by Part Number Series

ContactHoneywellAnalyticsforinformationaboutapprovalsnotshowninthissection.

XNX Certications XNX-UT Series

XNX Part Number Series

XNX

Transmitter IR

Personality

XNX Transmitter mV Personality

XNX Transmitter

EC Personality

Options

XNX-UTSI-*****

XNX-UTAI-*****

XNX-UTSV-***** / XNX-UTAV-*****

XNX-UTSE-***** /

XNX-UTAE-*****

With Generic 20 mA Input

With Optima Plus

With Searchline Excel

MPD-UTCB1 (Cat Bead)

MPD-UTIV1 (IR Methane)

MPD-UTIF1 (IR Flam)

MPD-UTIC1 (IR CO

2

)

with 705

with Sensepoint

with Sensepoint PPM

with Sensepoint HT

With XNXXSO1FM O

2

Cartrdige

With XNXXSH1FM H

2

S Cartridge

With XNXXSC1FM CO Cartridge

SO

2

, NH

3

, Cl

2

, ClO

2

, NO, NO

2

, H

2

PPM HCL, HCN, HF, O

3

, PH

3

Modbus

Relays

Local HART

Foundation Fieldbus

C-UL Classied

For Hazardous Locations

UL 1203 T T T T T T T T N/A N/A N/A T T T T T T T T

UL 913-7th Edition N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A T T T T N/A N/A T N/A

CSA

Hazardous Location

CAN/CSA C22.2 No. 30 M-1986 T T T T N/A N/A T T N/A N/A N/A T T T T T T T N/A

CAN/CSA C22.2 No. 157-92

(Applies to Local HART Option and/or

EC Adaptors)

N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A T

T T T N/A N/A T N/A

Performance CSA C22.2 No. 152 N/A T N/A T N/A N/A N/A T N/A N/A N/A N/A N/A N/A N/A T T T T

FM Listed

US Toxic Performance Standard referenced in notes 1, 2, 3 N/A N/A N/A N/A N/A N/A 3 N/A N/A N/A N/A 1 2 3 N/A T T T T

Flammable Performance

FM 6310 / 6320 N/A T N/A T N/A N/A N/A T N/A N/A N/A N/A N/A N/A N/A T T T T

FM 6325 N/A N/A T N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A T T T T

Toxic Gas Detector FM 6340 N/A N/A N/A N/A N/A N/A T N/A N/A N/A N/A N/A N/A N/A N/A T T T T

T = 3/4 NPT threaded Transmitters & Adapters

N/A = Not Applicable

1. ANSI/ISA 92.04.01, Part 1 2007

2. ISA 92.0.01, Part 3 1998

3. FM 6340

XNX Universal Transmitter

Section 6 - Specications

145

XNX Certications by XNX-AM Series

XNX Part Number Series

XNX Transmitter

IR Personality

XNX Transmitter mV Personality XNX Transmitter EC Personality

Options

XNX-AMSI-*****

XNX-AMAI-*****

XNX-AMSV-***** / XNX-AMAV-***** XNX-AMSE-***** / XNX-AMAE-*****

With Generic 20 mA Input

With Optima Plus

With Searchline Excel

MPD-AMCB1 (Cat Bead)

MPD-AMIV1 (IR Methane)

MPD-AMIF1 (IR Flam)

MPD-AMIC1 (IR CO

2

)

With 705 HT

With Sensepoint

With Sensepoint PPM

With Sensepoint HT

With Oxygen Cartrdige

With H

2

S Low Cartridge

With H

2

S Med Cartridge

With H

2

S High Cartridge

With CO Cartridge

SO

2

, NH

3

, Cl

2

, ClO

2

, NO, NO

2

,

H

2

PPM HCL, HCN, HF, O

3

, PH

3

Modbus

Relays

Local HART

Foundation Fieldbus

Electromagnetic &

Safety;

CE Mark

EMC Compliance

EU directive 2004/108/EC

M M M M M M M M M M M M M M M M M M M M M

EN 50270:2006

B B B B B B B B B B B B B B B B B B B B B

EU directive 94/9/EC

M M M M M M M M M M M M M M M M M M M M M

Hazardous Location

---

ATEX/DEMKO

IECEx

EN 60079-29-0: 2009

M M M M M M M N/A M M M M M M M M M M M M M

EN 60079-29-1: 2007

M M M M M M M N/A M M M M M M M M M M M M M

EN 60079-11: 2012

N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A M M M M M M N/A N/A M N/A

EN 60079-26: 2007

N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A M M M M M M N/A N/A N/A N/A

IEC 60079-31 1st Ed

M M M M M M M N/A N/A N/A M M M M M M M M M M M

IEC 60079-0 6th Ed

M M M M M M M N/A M M M M M M M M M M M M M

IEC 60079-1 6th Ed

M M M M M M M N/A M M M M M M M M M M M M M

IEC 60079-11 6th Ed

N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A M M M M M M N/A N/A M M

IEC 60079-26 2nd Ed

N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A M

1

M

1

M

1

M

1

M

1

M

1

N/A N/A N/A N/A

EN 60079-31: 2009

M M M M M M M N/A N/A N/A M M M M M M M M M M M

B = Both 3/4 NPT and M25

M=M25threadedTransmitters&Adapters

M

1

=WhenusedwithS3KRMKinaZone0location

N/A=NotApplicable

XNX Universal Transmitter

Section 6 - Specications

146

XNX Certications XNX-AM Series

XNX Part Number Series

XNX Transmitter

IR Personality

XNX Transmitter mV Personality

XNX Transmitter EC

Personality

Options

XNX-AMSI-*****

XNX-AMAI-*****

XNX-AMSV-***** / XNX-AMAV-*****

XNX-AMSE-***** / XNX-

AMAE-*****

With Generic 20 mA Input

With Optima Plus

With Searchline Excel

MPD-AMCB1 (Cat Bead)*

MPD-AMIV1 (IR Methane)

MPD-AMIF1 (IR Flam)

MPD-AMIC1 (IR CO

2

)

With 705 HT

With Sensepoint

With Sensepoint PPM

With Sensepoint HT*

With XNXXSO1SS O

2

Cartrdige

With XNXXSH1SS H

2

S

Cartridge

With XNXXSH2SS H

2

S

Cartridge

With XNXXSC1SS CO

Cartridge

SO

2

, NH

3

, Cl

2

, ClO

2

, NO, NO

2

,

H

2

PPM HCL, HCN, HF, O

3

, PH

3

Modbus

Relays

Local HART

Foundation Fieldbus

Performance*

EXAM

DEKRA GmbH

IEC 60079-29-1:2007***

EN 60079-29-1:2007***

N/A M N/A M N/A N/A N/A N/A N/A N/A M N/A N/A N/A N/A N/A N/A M M N/A

EN 45544:1999 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A M M M N/A N/A M M N/A

EN 50104:2010** N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A M N/A N/A N/A N/A N/A M M N/A

EN 50271:2010 N/A M N/A M N/A

N/A N/A N/A N/A N/A M M M M M N/A N/A M M N/A

TÜV Rhineland

IEC61508 B B B N/A N/A N/A N/A B B B B B B B B B N/A N/A N/A N/A

EN 50402 B B B N/A N/A N/A N/A B B B B B B B B B N/A N/A N/A N/A

DelaysresultingfromtransmissionerrorsbetweensensorandtransmitterextendresponsetimesT90bymorethanone-third.Theperioduntilfaultindicationis10seconds.

M=M25threadedTransmitters&Adapters

B=BothXNX-UT**-*****3/4”NPTandXNX-AM**-*****transmitters

N/A=NotApplicable

*Testedcomponents:handheldinpoint-to-pointmode,weatherproofcap(notusedforcalibration),calibrationmask.

**Testedapplications:oxygendeciencyandoxygenenrichment

***Testedgases:methane-2,butane-2,propane-2,hydrogen,n-nonane

XNX Universal Transmitter

Specications

151

XNX Certications - MPD-BT**.***** Part Number Series

XNX Part Number Series

XNX Transmitter

IR Personality

XNX Transmitter mV Personality

XNX Transmitter EC

Personality

Options

XNX-BTSI-*****

XNX-BTAI-*****

XNX-BTSV-*****

XNX-BTAV-*****

XNX-BTSE-*****

XNX-BTAE-*****

With Generic 20 mA Input

With Optima Plus

With Searchline Excel

MPD-BTCB1 (Cat Bead)

MPD-BTIV1 (IR Methane)

MPD-BTIF1 (IR Flam)

MPD-BTIC1 (IR CO2 )

with 705 HT

With XNXXSO1FM O

2

Cartrdige

With XNXXSH1FM H

2

S Cartridge

With XNXXSC1FM CO Cartridge

SO

2

, NH

3

, CL

2

, ClO

2

, NO, NO

2

, H

2

PPM HCL, HCN, HF, O

3

, PH

3

Modbus

Relays

Local HART

FOUNDATION Field Bus

UL Classied

UL 1203 T T T T T T T T T T T T T T T T

UL 913-7th Edition Applies to Local HART Option) N/A N/A N/A N/A N/A N/A N/A N/A T T T T N/A N/A T N/A

INMETRO

TÜV Rheinland

ABNT NBR IEC 60079-0:2008 B B B B B B B B B B B B B B B B

ABNT NBR IEC 60079-1:2009 B B B B B B B B B B B B B B B B

ABNT NBR IEC 60079-11:2013 N/A N/A N/A N/A N/A N/A N/A N/A B B B B N/A N/A T N/A

ABNT NBR IEC 60079-26:2008 B B B B B B B B B B B B B B B B

ABNT NBR IEC 60079-31:2014 B B B B B B B B B B B B B B B B

Portar:a INMETRO n°179 de 18/05/2010 B B B B B B B B B B B B B B B B

ABNT NBR IEC 60529-:2009 T T T T T T T T T T T T T T T T

FM Listed

Standard referenced in notes 1, 2, 3

N/A N/A N/A N/A N/A N/A 3 N/A 1 2 3 N/A

T T T T

FM 6310 / 6320

N/A T N/A T N/A N/A N/A T N/A N/A N/A N/A

T T T T

FM 6325

N/A N/A T N/A N/A N/A N/A N/A N/A N/A N/A N/A

T T T T

FM 6340

N/A N/A N/A N/A N/A N/A T N/A N/A N/A N/A N/A

T T T T

T = 3/4 NPT threaded Transmitters & Adapters

N/A = Not Applicable

1. ANSI/ISA 92.04.01, Part 1 2007

2. ISA 92.0.01, Part 3 1998

3. FM 6340

147

XNX Universal Transmitter

Specications

152

6..3.1 Certiﬁcation Labels

Figure229.XNX-UT**-*****conguration

148

XNX Universal Transmitter

Specications

149

Certiﬁcation Labels

XNX

UNIVERSAL

TRANSMITTER

XNX

UNIVERSAL

TRANSMITTER

Honeywell Analytics, Inc; 405 Barclay Blvd, Lincolnshire, IL 60069 USA

XNX- SN: to 32 VDC Max. Pmax = W

MADE IN USA

ATENÇÃO-NÃO ABRA ONDE UMA ATMOSFERA

EXPLOSIVA POSSA ESTAR PRESENTE

11-KB4BO-0120X

1180

0539

XNX-AM

-

: Contact Ratings: 250 VAC 5A,

24 VDC 5A, Resistive Load Only

IECEx UL

DEMKO 09 ATEX 0809943X

BVS 10 ATEX G 001X

EN60079-29-1

PFG 10 G 002 X

 Figure230.XNX-AM**-*****Conguration

XNX Universal Transmitter

Section 6 - Specications

150

6.4 Product Identication

6.4.1 XNX Universal Transmitter

TheXNXpartnumberingsystemcontainsalloftheinformationnecessarytoconveytheproductconguration,includingoptions.

Agency,portthread,enclosurematerial,andsensorpersonalitydenethestandardunit.Threeoptioneldsdeneoptionalrelayor

eldbusinterfacesandfactoryinstalledlocalHART.Thesensorandrangeeldisusedexclusivelybymillivoltunitstoassemblethe

denedMPDsensortypeandcorrespondingthreadtothetransmitter.AgencyapprovalsoftheMPDsensorareuniquebydevice

andpartnumber.EnsurethattheapprovalsofboththetransmitterandtheMPDsensormeettherequirementsoftheinstallation.

Enclosure Options

(See Section 6.2 for Agency Approvals)

Model

Port Thread Material Sensor

Interface

Option Local HART MPD Type Installed

XNX -

q q q q

-

q q q q q

AM - A

M25

Painted LM25

Aluminum

E - Electrochem N - None N - None NNN - None

AM - S

M25

Painted 316 Stain-

less Steel

I - Infrared R - Relay H - Local HART CB1 - MPD-CB1 (Catalytic Bead %LEL)

1

UT - A

3/4 “ NPT

Painted LM25

Aluminum

V - Millivolt M - Modbus IF1 - MPD-IF1 (IR %LEL Flam)

1

UT - S

3/4 “ NPT

Painted 316 Stain-

less Steel

F - Foundation

Fieldbus

IV1 - MPD-IV1 (IR CH4 0-5% Vol)

1

BT - A

3/4 “ NPT

Painted LM25

Aluminum

IC1 - MPD-IC1 (IR CO

2

0-5% Vol)

1

BT - S

3/4 “ NPT

Painted 316 Stain-

less Steel

XNX Universal Transmitter

Section 6 - Specications

151

6.4.2 XNX EC Replacement Sensors

XNX

ID

Target Gas

Cartridge

Part No

Maximum

Range

Selectable

Range

Increment

Default

Range

Cal Gas Range Cal Gas P/N

Cal Gas

Description

1 O

2

Oxygen

XNXXS01SS 25.0 %Vol

N/A N/A

25.0 %Vol

20.9 %Vol N/A N/A

XNXXSO1FM 23.0% Vol 23.0% Vol

2 H

2

S Hydrogen Sulfide (Low Range) XNXXSH3SS 15.0 ppm N/A N/A 15.0 ppm 5.0 to 10.0 ppm GFV263 10 ppm H

2

S

3 H

2

S Hydrogen Sulfide

XNXXSH1SS

XNXXSH1FM

50.0 ppm 10.0 to 50.0 ppm 0.1 ppm 15.0 ppm 3 to 35 ppm GFV258 25 ppm H

2

S

4 H

2

S Hydrogen Sulfide (High Range) XNXXSH2SS 500 ppm 50 to 500 ppm 10 ppm 100 ppm 15 to 350 ppm GFV421 50 ppm H

2

S

5 CO Carbon Monoxide

XNXXSC1SS

1,000 ppm

100 to 500 ppm

100 ppm 300 ppm 30 to 200 ppm GFV295 100 ppm CO

XNXXSC1FM 100 to 1,000 ppm

6 SO

2

Sulfur Dioxide XNXXSS1SS 20.0 ppm 5.0 to 20.0 ppm 5.0 ppm 15.0 ppm 2 to 14 ppm Contact HA 7.5 ppm SO

2

7 SO

2

Sulfur Dioxide (High Range) XNXXSS2SS 50.0 ppm 20.0 to 50.0 ppm 10 ppm 50.0 ppm 6 to 35 ppm GFV441 25 ppm SO

2

8 NH

3

Ammonia XNXXSA1SS 200 ppm 50 to 200 ppm 50 ppm 200 ppm 150 to 140 ppm Contact HA 100 ppm NH

3

9 NH

3

Ammonia (High Range) XNXXSA2SS 1000 ppm 200 to 1,000 ppm 50 ppm 1,000 ppm 60 to 700 ppm Contact HA 300 ppm NH

3

10 Cl

2

Chlorine XNXXSL2SS 5.00 ppm N/A N/A 5.00 ppm 2 to 3 ppm GFV251 2 ppm Cl

2

in N

2

11 Cl

2

Chlorine (High Range) XNXXSL1SS 20.0 ppm 5.0 to 20.0 ppm 5.0 ppm 5.0 ppm 2 to 14 ppm GFV251 2 ppm Cl

2

in N

2

12 ClO

2

Chlorine Dioxide XNXXSX1SS 1.00 ppm N/A N/A 1.00 ppm 0.3 to 0.7 ppm Gas Generator 0.5 ppm

13 NO Nitrogen Monoxide XNXXSM1SS 100 ppm N/A N/A 100 ppm 30 to 70 ppm GFV216 50 ppm NO in N

2

14 NO

2

Nitrogen Dioxide XNXXSN1SS 50.0 ppm 5.0 to 50.0 ppm 5.0 ppm 10.0 ppm 2 to 35 ppm GFV435 5 ppm NO

2

15 H

2

Hydrogen XNXXSG1SS 1000 ppm N/A N/A 1,000 ppm 300 to 700 ppm GFV364 500 ppm H

2

16 H

2

Hydrogen (High Range) XNXXSG2SS 10,000 ppm N/A N/A 10,000 ppm 3,000 to 7,000 ppm Contact HA 5000 ppm H

2

in N

2

17 HCl Hydrogen Chloride XNXXSR1SS 20.0 ppm 10.0 to 20.0 ppm 1.0 ppm 10.0 ppm 4 to 12 ppm Contact HA 5 ppm HCl in N2

19 HF Hydrogen Fluoride XNXXSF1SS 12.0 ppm N/A N/A 12.0 ppm 4 to 8 ppm Contact HA 5 ppm HF in N

2

21 PH

3

Phosphine XNXXSP1SS 1.20 ppm N/A N/A 1.20 ppm 0.5 to 0.7 ppm GFV405 0.5 ppm PH

3

in N

2

1Indicatesagencyapprovalandportthreadspecication

XNX Universal Transmitter

Section 6 - Specications

152

6.4.3 XNX EC Replacement Cells

Replacement

Cell P/N

Target Gas

Cartridge

Part No

S3KO1SS O

2

Oxygen

XNXXS01SS

XNXXSO1FM

S3KH1SS H

2

S Hydrogen Sulfide (Low Range) XNXXSH3SS

S3KH1SS

H

2

S Hydrogen Sulfide

XNXXSH1SS

XNXXSH1FM

S3KH2SS H

2

S Hydrogen Sulfide (High Range) XNXXSH2SS

S3KC1SS CO Carbon Monoxide

XNXXSC1SS

XNXXSC1FM

S3KS1SS SO

2

Sulfur Dioxide XNXXSS1SS

S3KS1SS SO

2

Sulfur Dioxide (High Range) XNXXSS2SS

S3KA1SS NH

3

Ammonia XNXXSA1SS

S3KA2SS NH

3

Ammonia (High Range) XNXXSA2SS

S3KL1SS Cl

2

Chlorine XNXXSL2SS

S3KL1SS Cl

2

Chlorine (High Range) XNXXSL1SS

S3KX1SS ClO

2

Chlorine Dioxide XNXXSX1SS

S3KM1SS NO Nitrogen Monoxide XNXXSM1SS

S3KN1SS NO

2

Nitrogen Dioxide XNXXSN1SS

S3KG1SS H

2

Hydrogen (Low Range) XNXXSG1SS

S3KG2SS H

2

Hydrogen (High Range) XNXXSG2SS

S3KR1SS HCl Hydrogen Chloride XNXXSR1SS

S3KY1SS HCN Hydrogen Cyanide XNXXSY1SS

S3KF1SS HF Hydrogen Fluoride XNXXSF1SS

S3KZ1SS O

3

Ozone XNXXSZ1SS

S3KP1SS PH

3

Phosphine XNXXSP1SS

XNX Universal Transmitter

Section 6 - Specications

153

6.4.4 Multi Purpose Detector (MPD)

SimilartotheXNXTransmitter,theMPDpartnumberingsystemdenestheagencyapprovalandthreadtype.Theonlymaterialselection

isStainlessSteel.Foursensorselectionsareavailable.AgencyApprovalsarespecictothe4sensortypes.Ensuretheapprovalof

thespecicsensortypemeetstherequirementsoftheinstallation.

Model Type Port Cong

Installed Sensor Range

(See Section 6.2 for Agency Approvals)

MPD -

q q q q q

AM M25

CB - Catalytic Bead %LEL 1 - Default

UT 3/4” NPT

IF - IR %LEL Flammable 2 to 9 - Future

BT 3/4” NPT

IV - IR Methane 0-5% Vol

IC - R Carbon Dioxide 0-5% Vol

6.4.5 XNX Catalytic Bead and IR Replacement Sensor Cartridges

Sensor

Type

1, 2

Target Gas

Cartridge

Part No

Operating

Pressure

Range

(kPa)

Operating

Humidity

Range (%

RH non-

condensing)

Air

Speed

(m/s)

Maximum

Range

Selectable

Range

3

Increment

Default

Range

Cal Gas Range Cal Gas P/N

Cal Gas

Description

MPD-IC1 Carbon Dioxide 1226-0301 80 - 110 see footnote 4 0 - 6 5.00 %Vol 1.00 to 5.00 %Vol 1.00 %Vol 5.00 %Vol 1.50 to 3.5 %Vol

Contact HA

2.5 %VOL CO

2

in Air

MPD-IV1

Methane 1226-0299 80 - 110 0 - 95 0 - 6 5.00 %Vol 1.00 to 5.00 %Vol 1.00 %Vol 5.00 %Vol 1.50 to 3.5 %Vol GFV352 2.5 %VOL CH

4

in Air

Methane 1226-0299 80 - 110 0 - 95 0 - 6 100 %LEL 1.00 to 5.00 %Vol 1.00 %Vol 5.00 %Vol 1.50 to 3.5 %Vol GFV352 2.5 %VOL CH

4

in Air

MPD-IF1 Flammables 1226-0300 80 - 110 0 - 95 0 - 6 100 %LEL 20 to 100 %LEL

3

10 %LEL 100 %LEL 30 to 70 %LEL GFV406 1 %VOL C

3

H

8

in Air

MPD-CB1 Flammables 1226A0359 80 - 120 see footnote 5 0 - 6 100 %LEL 20 to 100 %LEL

3

10 %LEL 100 %LEL 30 to 70 %LEL GFV352 50 %LEL CH

4

in Air

1. Agency approved hydrogen sensors are MPD-CB1 and 705 STD.

2. When ordering replacement MPD sensor cartridges, the replacement cartridge must be the same type as factory congured. Substituting a different cartridge

will void agency certication.

3. On XNX %LEL units carrying UL/CSA certications, the range is xed at 100%LEL and is not adjustable.

4. Humidity: 5% to 95% RH non-condensing

5. Humidity: 0 to 99% RH non-condensing

XNX Universal Transmitter

Section 6 - Specications

154

6.4.6 Accessories/Spares

Accessory/Spare Part Number Description

PipeMountKit 1226A0358

Foruseonpipesfrom2-6inches(50-150mm)indiameter.

Kitincludes:PipeMountBracket,(2)CarriageBolts,NutsandLockWashers.

RemoteECSensorMounting

Kit

S3KRMK

Theremotesensormountingkit(S3KRMK)allowstheXNXECsensorstoberemotely

mountedviaanIScablekit,upto50feet(15meters)fromthetransmitter.Thekitincludes

50feetofshieldedcable,cableglandsandremoteterminalbox.Thecablecanbecut

totherequiredlengthandterminatedattheremoteterminalbox.

CeilingMountBracketKit 1226A0355

TheoptionalCeilingMountBracketKitallowstheXNXtobemountedtotheceiling.

Kitincludes:(2)StainlessSteelCeilingMountBrackets,boltsandnuts.

1226A0382 MPD Adapter Ring

S3KDMK EC/MPD Duct Adapter Kit

DuctMountKit S3KDMK

Theductmountingkit(S3KDMK)canbeusedwiththeECsensortoallowdetectionof

O2,CO,H2andH2Sgasesinducts.

WhencombinedwiththeMPDInterfaceAdapter(1226A0382),theductmountingkitcan

accommodatetheMPDtodetectammablegasesinaductapplication.Theductmount

kit includes theadapter, gasket and required fasteners.  The MPD Interface Adapter

includesonlytheadapterandrequirestheS3KDMKductmountkit.

MPDInterfaceAdapter 1226A0382

CalibrationGasFlowAdapter

1226A0411 MPD

02000-A-1645

SensepointHT

00780-A-0035 705

Calibration Cup S3KCAL

XNXEC-Thecalibrationcupisusedtoapplycalibrationtestgastothesensor.Itpushts

ontothebottomofthesensorandcanbettedwithoutremovingtheweatherproofcover.

XNX Universal Transmitter

Section 6 - Specications

155

Accessory/Spare Part Number Description

Weatherproof Cap

Included XNXEC

TheweatherproofcapprotectstheXNXsensorsfromharshweather.

02000-A-1640 MPD

02000-A-1640 Sensepoint

02000-A-1635 705

ExtremeWeatherProtector SPXCDWP

SensorXNX-ECorMPD;theweatherprotectionisdesignedtoprotectthesensorfrom

environmentalconditionsinoutdoorexposureapplications.

Collecting Cone

S3KCC XNXEC

The collecting cone improves detection of lighter-than-air gases such

as hydrogen and methane.

02000-A-1642 MPD

02000-A-1642 Sensepoint

02000-A-1642 705

RemoteGassingKit 1226A0354

TheRemoteGassingKitenablesgastobeappliedremotelyforperformingfunctional

responsechecks.

KitIncludes:50’Teon

®

tubing,mountingbracket,tubecapanddeviceadaptersin1/4”

and1/8”IDtoattachtobumptestportsontheweatherproofcapofyourdevice.

RemoteMPDMounting

2441-0022 UL/CSAAluminumJunctionBox

00780-A0100 ATEX/IECJunctionBox(3)M20,(1)M25entries.“Exe”ATEXIECApproval

TerminalBlock/Shorting

Jumpers

ContactHA

Terminal block jumpers provide an electrical connection without connection to the

PersonalityBoard.Installthejumpersbetweenpins1and2andbetweenpins3and4

tosupportmulti-nodewiring.

XNX Universal Transmitter

Section 6 - Specications

156

Accessory/Spare Part Number Description

Stopping Plugs

1226-0257

M25Plugw/protectivecapandO-ring.(CertiedforusewithXNXUniversalTransmitter

only)

1226-0258 3/4NPTw/protectivecap.(CertiedforusewithXNXUniversalTransmitteronly)

Replacement Cover O-ring 0235-1266 Replacement O-ring for the XNX front cover

1

2

3

4

5

6

7

8

9

Pluggable TerminalBlocks

1226A0302 TerminalBlockAss’y6-PinXNXEC

1226A0304 TerminalBlockAss’y9-PinXNXmV

1226A0305 IRTerminalBlockKitIncludes:9-Pinand2-PinTerminalBlocks

1226A0306 RelayTerminalBlockKitIncludes:9-Pinand2-PinTerminalBlocks

1226A0307 TerminalBlockAss’y10-PinXNXModbus

1226A0303 TerminalBlockAss’y6-PinFFB

MagneticWand/Screwdriver 1226-0254 Replacementwandforfrontpanelaccess

Ferrite Bead 0060-1051 Bead Ferrite MV XNX

FoundationFieldbusGround

Cable

0310-0041 CableGroundFoundationFieldbusXNX

Small Screwdriver 1226-0408

ReplacementscrewdriverforuseonTerminalBlockTB2andTB4(IRPersonalityand

RelayOption)

XNX Universal Transmitter

Section 6 - Specications

157

Accessory/Spare Part Number Description

WeatherHousing 0200-A-1635 ForusewithSeries2000,SensePoint,andSignalPointEECSensorProducts

WeatherHousing 0200-A-1640 ForusewithSeries2000,SensePoint,andSignalPointCombustibleSensorProducts

XNX Universal Transmitter

XNX Universal Transmitter Technical Manual

159

7 Control Drawings

XNX Universal Transmitter

Section 7 - Control Drawings

159

7.1 XNX UL/INMETRO

XNX Universal Transmitter

Section 7 - Control Drawings

160

XNX Universal Transmitter

Section 7 - Control Drawings

161

XNX Universal Transmitter

Control Drawings

XNX UL/CSA/FM

˚ ˚

162

XNX Universal Transmitter

Control Drawings

18-32 VDC

6.2W max.

1-1

1-2

1-3

1-4

1-5

1-6

EC Barrier J2

+V

-V

+ mA

- mA

˚ ˚

163

XNX Universal Transmitter

Control Drawings

OUTPUT INPUT

Uo = 24.15V Ui = 21.85V

Io = 136mA Ii = 120mA

Po = 0.82W Pi = 1.0W

Lo = 1.4mH Li = 0.0mH

Co = 0.122uF Ci = 0.0uF

TABLE 1

IS HART DEVICE XNX HART INTERFACE

INPUT OUTPUT

V max (or Ui)

 Voc or Vt (or Uo)

I max (or Ii)

 Isc or It (or Io)

P max, Pi

 Po

Ci + Ccable

 Ca (or Co)

Li + Lcable

 La (or Lo)

OUTPUT INPUT

Voc or Vt (or Uo)

 V max (or Ui)

Isc or It (or Io)

 I max (or Ii)

Po

 P max, Pi

Ca (or Co)

 Ci + Ccable

La (or Lo)

 Li + Lcable

OUTPUT INPUT

Voc or Vt (or Uo) = 5.88 V

 V max (or Ui)

Isc or It (or Io) = 84 mA

 I max (or Ii)

Po = 123 mW

 P max, Pi

Ca (or Co) = 10uF

 Ci + Ccable

La (or Lo) = 1 mH

 Li + Lcable

164

XNX Universal Transmitter

Control Drawings

Remote Sensor Mount

Sens or Se ns or Se ns or

Par t No. Part No. Part No.

S3KXSC1SS or

XNX X SC1SS,

XNX X SC 1FM

CO

NH3(H)

PH3

S3KXSP1SS or

XNXX SP1SS

HCN

S3KXSY1SS or

XNXX SY1SS

S3KXSZ1SS or

XNXX SZ1SS

S3KXSL2SS or

XNXX SL2SS

Cl2(L )

SO2(H)

S3KXSS2SS or

XNXX SS2SS

NO2

S3KXSN1SS or

XNXX SN1SS

SO2(L)

S3KXSS1SS or

XNXX SS1SS

S3KXSX1SS or

XNXX SX1SS

O3ClO2

NO

S3KXSM1SS or

XNXX SM1SS

HF

S3KXSF1SS or

XNXX SF1SS

S3KXSL1SS or

XNXX SL1SS

HCl

S3KXSR1SS or

XNXX SR1SS

S3KXSA2SS or

XNXX SA2SS

H2(H)

S3KXSG2SS or

XNXX SG2SS

H2S(L L)

S3KXSH3SS or

XNXX SH3S S

H2S(H)

S3KXSH1SS or

XNX X SH1SS,

XNX X SH1FM

S3KXSH2SS or

XNXX SH2S S

Cl2(H)

S3KXSG1SS or

XNXX SG1SS

Gas Type Gas Type Gas Type

O2

S3KXSO1SS or

XNX X SO1SS,

XNXX SO1FM

NH3(L)

S3KXSA1SS or

XNXX SA1SS

H2(L)

H2S(L )

165

XNX Universal Transmitter

XNX Universal Transmitter Technical Manual

167

Appendix A - HART

®

Protocol

XNX Universal Transmitter

Appendix A - HART

®

Protocol

167

A.1 HART

®

Interface

The XNX Universal Transmitter is registered with the

HART Communication Foundation.

Note: Only qualified service personel should perform the procedures in this section.

Every XNX

®

gas sensor can communicate using the HART protocol

(dened by the HART Communication Foundation at http://www.

hartcomm.org). HART is unique among eldbuses in that the digital

signal is superimposed on a traditional 4-20 mA current loop. This

provides the reliability of analog signaling with the advanced

diagnostic capability of a digital device.

HART devices are usually connected as point-to-point networks. The

analog output of the XNX transmitter can also be disabled to facilitate

construction of multidrop, all-digital HART networks.

Control System

or Other Host Application

Multiplexer

Barrier

Handheld Terminal

Field Device

Note: Instrument power is provided by an interface

or external power source that is not shown.

Figure 233. HART Point-to-point Mode

If HART is not needed, the unit can be used as a 4-20 mA transmitter.

Since the transmitter is a slave, the internal modem will remain silent

if no master signal is present. Additionally the HART signal is at too

high a frequency (1200 Hz) to interfere with analog control equipment.

Another novel feature of HART networks is that two masters can

be present. The primary master is usually a distributed control

system (DCS), programmable logic controller (PLC), or a personal

computer (PC). The secondary master can be a handheld terminal.

The XNX transmitter has been tested with the handheld Emerson eld

communicator.

Input/Output (I/O) System

Handheld Terminal

Field Devices

Control System or

Other Host Application

Note: Instrument power is provided by an interface

or external power source that is not shown.

Figure 234. HART Multi-point Mode

The XNX device descriptor (DD) le provides HART users with data

on the capabilities and features of the XNX Universal Transmitter.

Select HART enabled devices are able to interface with XNX

transmitters when connected via HART communication. A copy of

the le is included on the Documentation CD. This DD le can be

installed on HART-enabled Emerson eld communicators using the

Emerson Easy Upgrade Utility. The DD les located on the resource

CD are compatible with the software integral to the transmitter. Older

transmitters using earlier versions of software require previous versions

of the DD les. Contact your local Honeywell representative with any

questions regarding software compatibility.

During manufacturing, Honeywell congures the 8-digit HART tag to

the XNX serial number. This can be used to conrm correct wiring

from the transmitter to the control system. If desired, the HART tag

can be modied. The xed XNX serial number can also be read over

HART.

For convenience, the transmitter presents the HART signal on two

interfaces. The 1200 Hz AC signal is capacitively coupled to the main

20 mA analog output. This may be monitored at the control system

XNX Universal Transmitter

Appendix A - HART

®

Protocol

168

or at any point along the 20 mA loop. Additionally, the optional local

HART interface (P/N: XNX-HIF) permits temporary connection of a

HART terminal to the transmitter. This local HART port is transformer-

coupled to the main 20 mA output. This port is intrinsically safe and

polarity insensitive. See Section 2.3.1 for more information.

The internal HART modem functions as a high-impedance current

source. Thus transferring the HART signal requires a certain minimum

loop resistance between the slave and a low-impedance power

supply.

Normally, this resistance is supplied by the control system and so

need not be explicitly added. However, special treatment is needed

when the 20 mA output is not used and the local HART interface is

needed. (An installer might choose to communicate using relays,

Modbus

®

, or Foundation

TM

Fieldbus instead.) In this case, the

supplied 510 ohm resistor must be tted to create an “articial” 20

mA loop. The resistor should be connected between TB-1 terminal

1-3 and terminal 1-6. Additionally, S1 and S2 should be placed in

“source” conguration. This is shown schematically in Figure 237.

The digital HART interface provides all of the capabilities of the local

user interface. The XNX transmitter has been designed to use the

portable Emerson eld communicator with DevCom2000 software for

Microsoft Windows

®

and Emerson AMS Intelligent Device Manager.

Using HART, a service person can display information, test, calibrate,

and congure. A map of the HART menus is provided in Section

A.1.3.

ATEX Conditions for Safe Use of Intrinsically Safe

HART Handheld Devices

For installations in which both the Ci and li of the intrinsically safe

apparatus exceeds 1% of the Co and lo parameters of the associated

apparatus (excluding the cable), 50% of Co and lo parameters are

applicable and shall not be exceeded, i.e., the Ci of the device plus

the C of the cable must be less than or equal to 50% of the Co of

the associated apparatus, and the li of the device plus the l of the

cable must be less than or equal to 50% of the lo of the associated

apparatus.

Figure 235. XNX mV Personality

Board Terminal Blocks, Jumper Switches

and Wire Color Chart

HART

20 mA

Operation

LOCAL

J1

S1

+V 1-1

mV TB-1

MPD, 705

Sensepoint

4-20mA

HART

16-32 VDC

6.5W max.

1-2

-V 1-3

1-4

+mA 1-5

-mA 1-6

Sense

1-7

0v 1-8

Ref 1-9

S1

Source

Sink

Isolated

S2

XNX mV TB-1

▼▼

S2S1

▼▼

Isolated

▲

Sink

▼

Source

J1 - Local HART Option Connector

S1 and S2 - 20mA Output

Jumper Switch

▼

▲

mV Sensor Type

Catalytic Bead MPD w/IR

MPD

705

705HT

S’point

S’point HT

S’point

PPM

IR 5%

IR Flam

CO

2

CH

4

TB-1 Desc. Wire Color from Sensor

1 24v

See Section 2.2.4.

2

3 Gnd

4

5 20mA +

6 20mA -

7 Sense Brown Red Brown

8 0v White Green White

9 Ref Blue Blue Blue

Internal Ground

1

2

3

4

5

6

7

8

9

510 Ohm Resistor

XNX Universal Transmitter

Appendix A - HART

®

Protocol

169

A.1.1 HART Sink, Source, and Isolated Wiring

The following gures illustrate the proper HART Multidrop wiring for the XNX.

S1

Source

Sink

Isolated

S2

+V 1-1

EC TB-1

4-20mA

HART

16-32 VDC

6.2W max.

1-2

-V 1-3

1-4

+mA 1-5

-mA 1-6

S1

Source

Sink

Isolated

S2

+V 1-1

EC TB-1

4-20mA

HART

16-32 VDC

6.2W max.

1-2

-V 1-3

1-4

+mA 1-5

-mA 1-6

S1

Source

Sink

Isolated

S2

+V 1-1

EC TB-1

4-20mA

HART

16-32 VDC

6.2W max.

1-2

-V 1-3

1-4

+mA 1-5

-mA 1-6

250 Ω

minimum

XNX

Address 1

XNX

Address 2

XNX

Address 7

HART

Handheld

Communicator

NOTE: Only addresses greater than 0 are valid for multidrop HART networks.

Other loop

powered

HART

devices

-

+

S1

Source

Sink

Isolated

S2

+V 1-1

1

6.

+

24

VDC

-

External HART

Automation Equipment

Figure 236. XNX Multidrop HART Network Wiring - XNX Sink

XNX Universal Transmitter

Appendix A - HART

®

Protocol

170

Figure 237. XNX Multidrop HART Network Wiring - XNX Source

S1

Source

Sink

Isolated

S2

+V 1-1

EC TB-1

4-20mA

HART

16-32 VDC

6.2W max.

1-2

-V 1-3

1-4

+mA 1-5

-mA 1-6

S1

Source

Sink

Isolated

S2

+V 1-1

EC TB-1

4-20mA

HART

16-32 VDC

6.2W max.

1-2

-V 1-3

1-4

+mA 1-5

-mA 1-6

S1

Source

Sink

Isolated

S2

+V 1-1

EC TB-1

4-20mA

HART

16-32 VDC

6.2W max.

1-2

-V 1-3

1-4

+mA 1-5

-mA 1-6

250 Ω

minimum

XNX

Address 1

XNX

Address 2

XNX

Address 7

Emerson

Field Communicator

NOTE: Only addresses greater than 0 are valid for multidrop HART networks.

Other loop

powered

HART

devices

-

+

S1

Source

Sink

Isolated

S2

+V 1-1

1

6.

+

24

VDC

-

External HART

Automation Equipment

XNX Universal Transmitter

Appendix A - HART

®

Protocol

171

S1

Source

Sink

Isolated

S2

+V 1-1

EC TB-1

4-20mA

HART

16-32 VDC

6.2W max.

1-2

-V 1-3

1-4

+mA 1-5

-mA 1-6

S1

Source

Sink

Isolated

S2

+V 1-1

EC TB-1

4-20mA

HART

16-32 VDC

6.2W max.

1-2

-V 1-3

1-4

+mA 1-5

-mA 1-6

S1

Source

Sink

Isolated

S2

+V 1-1

EC TB-1

4-20mA

HART

16-32 VDC

6.2W max.

1-2

-V 1-3

1-4

+mA 1-5

-mA 1-6

250 Ω

minimum

XNX

Address 1

XNX

Address 2

XNX

Address 7

HART

Handheld

Communicator

NOTE: Only addresses greater than 0 are v

alid for multidrop HART networks.

Other loop

powered

HART

devices

-

+

S1

Source

Sink

Isolated

S2

+V 1-1

1

6.

External HART

Automation Equipment

+

24

VDC

-

+

24

VDC

-

Figure 238. XNX Multidrop HART Network Wiring - Isolated

XNX Universal Transmitter

Appendix A - HART

®

Protocol

172

A.1.2 DevComm PC-based HART Interface

Overview

The XNX-HART interface facilitates remote access to all features

of the local user interface including displaying status, testing,

calibrating, and conguring. A device descriptor (DD) le is

available to adapt standard tools for use with the transmitter.

Warning: After changing parameters with a handheld device,

verify that the parameter settings are correct at the transmitter.

The following screens show some of the features of these two

interfaces for the XNX transmitter.

Figure 239. Presentation of XNX Data by DevComm2000

Figure240.XNXdatadisplayedonanEmersoneldcommunicator

Security level 1 is required to select the display language and to

adjust the date and time. All other conguration options require

security level 2 access.

XNX Universal Transmitter

Appendix A - HART

®

Protocol

173

Functions in the Congure Menu and the security levels required

to change them are explained in this table.

Symbol Description

Security

Level

Symbol Description

Security

Level

Select Language 1 Calibration Interval 2

Set Date & Time 1

✓

Accept New Sensor

Type

2

Set mV Sensor Type 2 Beam Block Options 2

Set mA Sensor Type 2 Path Length 2

Gas Selection 2 Unit ID 2

Range & Alarms 2 Relay Options 2

Latching/Non-

latching

2 Fieldbus Options 2

Set Units 2 Congure Security 2

mA Levels 2

Functions

Conguration Summary

All of the HART status information can be extracted from the

transmitter as a PDF or text le. This includes voltages, signal

strengths, and conguration settings. An example summary,

which required only 5 mouse clicks, is shown below.

Figure 241. HART status information

XNX Universal Transmitter

Appendix A - HART

®

Protocol

174

Information Screens

All of the information in the Conguration Summary can be

viewed live on various informational displays. For example,

alarm settings are shown in Figure 242.

Figure 242. Typical Alarm Settings Display

Event History

The XNX transmitter maintains a record of all signicant events.

All alarms, all warnings, and all faults are recorded. Additionally,

over sixty types of informational events are dened to record

important transactions such as recalibrations or conguration

changes. One-thousand records are maintained and every event

has a timestamp.

Figure 243. HART Event History Display

Test

The test menu provides methods for inhibiting the output,

exercising the analog output, or simulating alarms or faults.

These methods simplify common tasks by providing a simple

user interface.

Figure 244. Alarm Simulation

XNX Universal Transmitter

Appendix A - HART

®

Protocol

175

Calibration

The calibration menu permits calibrating zero or span and

bump testing. Additionally, when tted with a Searchline EXCEL

sensor, the Calibrate menu displays the optical signal strength

for mechanical alignment. The gas calibrate operation is shown

below.

Figure 245. Gas Calibrate Method

Caution: Do not back out of a menu selection while a calibration is in progress.

Conguration

All user settings of the XNX transmitter can be made either at

the local user interface or over HART. The conguration menu

facilitates convenient setup of alarm levels as shown in Figure

246. Methods are also provided to set time, units, and other

parameters.

Figure 246. Set Range and Alarm

Conclusion

The XNX HART interface adds value by facilitating remote

operation of Honeywell Analytics gas sensors. All functions

available locally are also available over HART.

XNX Universal Transmitter

Appendix A - HART

®

Protocol

176

A.1.3 Handheld Online Menu

When HART communication is established with the XNX, the Root menu is displayed:

Main Menu Key Sub Menus

Online...

1 Device Setup

2 Concentration 0.00

%LEL

3 PV Alrm Typ

4 Monitoring State Normal Monitoring

5 Reset Alarm Fault(s) None

6 Gas Name Methane

7 Sensor Type Optima

Device Setup...

1 User Login

2 XNX Display...

3 Display Menu...

4 Test Menu...

5 Calibration...

6 Configuration...

7 Device Status...

8 Detailed Setup...

9 Review

Current Login Level: Default

Want to change Login Level

1 Logout [Level 0]

2 Login [level1/2/3]

3 Exit

Online...

1 Device Setup

2 Concentration 0.00

%LEL

3 PV Alrm Typ

4 Monitoring State Normal Monitoring

5 Reset Alarm Fault(s) None

6 Gas Name Methane

7 Sensor Type Optima

Device Setup...

1 User Login

2 XNX Display...

3 Display Menu...

4 Test Menu...

5 Calibration...

6 Configuration...

7 Device Status...

8 Detailed Setup...

9 Review

XNX Display...

1 Concentration 0.00 %LEL

2 PV Alrm Typ None

3 Fault/Warn Number F

4 Monitoring State Normal Monitoring

5 Time Date Format mm/dd/yy hh:mm:ss

6 Time Date Stamp 09/18/08 11:57:57

7 Gas Name Methane LEL

Online...

1 Device Setup

2 Concentration 0.00

%LEL

3 PV Alrm Typ

4 Monitoring State Normal Monitoring

5 Reset Alarm Fault(s) None

6 Gas Name Methane

7 Sensor Type Optima

Device Setup...

1 User Login

2 XNX Display...

3 Display Menu...

4 Test Menu...

5 Calibration...

6 Configuration...

7 Device Status...

8 Detailed Setup...

9 Review

Display Menu...

1 Reset Alarm Faults

2 Event History

3 Display Basic Info...

4 Display SW Info...

5 Display Optical Performance

6 Display mA Settings

7 Display Alarm Settings

8 Display Maintenance Status

9 Display Installation Status

Display Basic Info...

1 Gas Name

Methane LEL

2 XNX ID SOUTH

TOWER

XNX HART Basic Menus (cont’d)

XNX Universal Transmitter

Appendix A - HART

®

Protocol

177

Main Menu Key Sub Menus

Online...

1 Device Setup

2 Concentration 0.00

%LEL

3 PV Alrm Typ

4 Monitoring State Normal Monitoring

5 Reset Alarm Fault(s) None

6 Gas Name Methane

7 Sensor Type Optima

Device Setup...

1 User Login

2 XNX Display...

3 Display Menu...

4 Test Menu...

5 Calibration...

6 Configuration...

7 Device Status...

8 Detailed Setup...

9 Review

Display Menu...

1 Reset Alarm Faults

2 Event History

3 Display Basic Info...

4 Display SW Info...

5 Display Optical Performance

6 Display mA Settings

7 Display Alarm Settings

8 Display Maintenance Status

9 Display Installation Status

Display SW Info...

1 Dev id

1081234

2 Fld dev rev

1

3 Sensor S/w Ve

r 48

4 Sensor s/n

0

5 Gas Name

Methane LEL

6 XNX ID SOUTH

TOWER

Online...

1 Device Setup

2 Concentration 0.00

%LEL

3 PV Alrm Typ

4 Monitoring State Normal Monitoring

5 Reset Alarm Fault(s) None

6 Gas Name Methane

7 Sensor Type Optima

Device Setup...

1 User Login

2 XNX Display...

3 Display Menu...

4 Test Menu...

5 Calibration...

6 Configuration...

7 Device Status...

8 Detailed Setup...

9 Review

Display Menu...

1 Reset Alarm Faults

2 Event History

3 Display Basic Info...

4 Display SW Info...

5 Display Optical Performance

6 Display mA Settings

7 Display Alarm Settings

8 Display Maintenance Status

9 Display Installation Status

Display Optical Performance...

1 Signal Strength

0.96

2 Ref Sig Strength

1.12

3 Sam Sig Strength

1.06

4 Baseline

0.92

5 Dynamic Reserve

96 %

6 Window Temp

28 degC

XNX HART Basic Menus (cont’d)

XNX Universal Transmitter

Appendix A - HART

®

Protocol

178

Main Menu Key Sub Menus

Online...

1 Device Setup

2 Concentration 0.00

%LEL

3 PV Alrm Typ

4 Monitoring State Normal Monitoring

5 Reset Alarm Fault(s) None

6 Gas Name Methane

7 Sensor Type Optima

Device Setup...

1 User Login

2 XNX Display...

3 Display Menu...

4 Test Menu...

5 Calibration...

6 Configuration...

7 Device Status...

8 Detailed Setup...

9 Review

Display Menu...

1 Reset Alarm Faults

2 Event History

3 Display Basic Info...

4 Display SW Info...

5 Display Optical Performance

6 Display mA Settings

7 Display Alarm Settings

8 Display Maintenance Status

9 Display Installation Status

Display mA Settings...

1 Overrange Current

21 mA

2 Warning Current

3 mA

3 Inhibit Current

2 mA

Online...

1 Device Setup

2 Concentration 0.00

%LEL

3 PV Alrm Typ

4 Monitoring State Normal Monitoring

5 Reset Alarm Fault(s) None

6 Gas Name Methane

7 Sensor Type Optima

Device Setup...

1 User Login

2 XNX Display...

3 Display Menu...

4 Test Menu...

5 Calibration...

6 Configuration...

7 Device Status...

8 Detailed Setup...

9 Review

Display Menu...

1 Reset Alarm Faults

2 Event History

3 Display Basic Info...

4 Display SW Info...

5 Display Optical Performance

6 Display mA Settings

7 Display Alarm Settings

8 Display Maintenance Status

9 Display Installation Status

Display Alarm Settings...

1 PV URV 100.000

%LEL

2 PV LRV 0.000

%LEL

2 Alarm Thresholds 1 20

%LEL

3 Alarm Thresholds 2 40

%LEL

4 Alarm Config

0x0C

5 Board Type Modbus/RTU

Interf...

Online...

1 Device Setup

2 Concentration 0.00

%LEL

3 PV Alrm Typ

4 Monitoring State Normal Monitoring

5 Reset Alarm Fault(s) None

6 Gas Name Methane

7 Sensor Type Optima

Device Setup...

1 User Login

2 XNX Display...

3 Display Menu...

4 Test Menu...

5 Calibration...

6 Configuration...

7 Device Status...

8 Detailed Setup...

9 Review

Display Menu...

1 Reset Alarm Faults

2 Event History

3 Display Basic Info...

4 Display SW Info...

5 Display Optical Performance

6 Display mA Settings

7 Display Alarm Settings

8 Display Maintenance Status

9 Display Installation Status

Display Maintenance Status..

1 Sensor Type ECC

2 Sensor Life 0 Hours

XNX HART Basic Menus (cont’d)

XNX Universal Transmitter

Appendix A - HART

®

Protocol

179

Main Menu Key Sub Menus

Online...

1 Device Setup

2 Concentration 0.00

%LEL

3 PV Alrm Typ

4 Monitoring State Normal Monitoring

5 Reset Alarm Fault(s) None

6 Gas Name Methane

7 Sensor Type Optima

Device Setup...

1 User Login

2 XNX Display...

3 Display Menu...

4 Test Menu...

5 Calibration...

6 Configuration...

7 Device Status...

8 Detailed Setup...

9 Review

Display Menu...

1 Reset Alarm Faults

2 Event History

3 Display Basic Info...

4 Display SW Info...

5 Display Optical Performance

6 Display mA Settings

7 Display Alarm Settings

8 Display Maintenance Status

9 Display Installation Status

Display Installation Status...

1 Power Supply Volt... 19403

mVolt

2 Operating Voltage 3297

mVolt

3 Sensor I/P Voltage 0

mVolt

4 Sensor Voltage 0

mVolt

5 XNX Temp

33 degC

6 Sensor Temp

41 degC

7 Loop current

4.000 mA

Online...

1 Device Setup

2 Concentration 0.00

%LEL

3 PV Alrm Typ

4 Monitoring State Normal Monitoring

5 Reset Alarm Fault(s) None

6 Gas Name Methane

7 Sensor Type Optima

Device Setup...

1 User Login

2 XNX Display...

3 Display Menu...

4 Test Menu...

5 Calibration...

6 Configuration...

7 Device Status...

8 Detailed Setup...

9 Review

Test Menu...

1 Inhibit Long-term

2 Force mA O/P

3 Alarm/Fault Simulation

XNX HART Basic Menus (cont’d)

XNX Universal Transmitter

Appendix A - HART

®

Protocol

180

Main Menu Key Sub Menus

Online...

1 Device Setup

2 Concentration 0.00

%LEL

3 PV Alrm Typ

4 Monitoring State Normal Monitoring

5 Reset Alarm Fault(s) None

6 Gas Name Methane

7 Sensor Type Optima

Device Setup...

1 User Login

2 XNX Display...

3 Display Menu...

4 Test Menu...

5 Calibration...

6 Configuration...

7 Device Status...

8 Detailed Setup...

9 Review

Calibration...

1 Gas Calibrn

2 Bump Test

3 Calibrate mA Offset

4 Soft Reset

5 Align Excel

Online...

1 Device Setup

2 Concentration 0.00

%LEL

3 PV Alrm Typ

4 Monitoring State Normal Monitoring

5 Reset Alarm Fault(s) None

6 Gas Name Methane

7 Sensor Type Optima

Device Setup...

1 User Login

2 XNX Display...

3 Display Menu...

4 Test Menu...

5 Calibration...

6 Configuration...

7 Device Status...

8 Detailed Setup...

9 Review

Conguration...

1 Config Security

2 Measure as mg/m3

3 Set Range & Alarm

4 Config Alarm Mode

5 Fieldbus Option

6 Set mV Sensor Type

7 Gas Selection

8 Config mA Status L...

9 Set Calibrn Interval

XNX ID SOUTH TOWER

Conc Unit %LEL

Time Date Format mm/dd/yy hh:mm:ss

Set Date-Time

XNX HART Basic Menus (cont’d)

XNX Universal Transmitter

Appendix A - HART

®

Protocol

181

Main Menu Key Sub Menus

Online...

1 Device Setup

2 Concentration 0.00

%LEL

3 PV Alrm Typ

4 Monitoring State Normal Monitoring

5 Reset Alarm Fault(s) None

6 Gas Name Methane

7 Sensor Type Optima

Device Setup...

1 User Login

2 XNX Display...

3 Display Menu...

4 Test Menu...

5 Calibration...

6 Configuration...

7 Device Status...

8 Detailed Setup...

9 Review

Detailed Setup...

1 Output Condition...

2 Device Information...

Online...

1 Device Setup

2 Concentration 0.00

%LEL

3 PV Alrm Typ

4 Monitoring State Normal Monitoring

5 Reset Alarm Fault(s) None

6 Gas Name Methane

7 Sensor Type Optima

Device Setup...

1 User Login

2 XNX Display...

3 Display Menu...

4 Test Menu...

5 Calibration...

6 Configuration...

7 Device Status...

8 Detailed Setup...

9 Review

Review

1 Manufacturer Honeywell

2 Model XNX

3 Sensor Type Optima

4 PV %LEL

5 Info Min Range 100.00 %LEL

6 Info Max Range 100.00 %LEL

7 PV % Range 0.000 %

8 PV Xfer fnctn Linear

9 PV 4.000 mA

PV Alrm typ None

Tag S. TOWER

Long tag

Descriptor SOUTH TOWER

Message CRACKING TOWER

Final asmbly num 0

Dev id 1081234

Universal rev 6

Fld dev rev 1

Software rev 38

Poll addr 0

Loop Curnt Mode Enabled

Cfg chng count 6

Num req preams 9

Num resp preams 7

XNX HART Basic Menus (cont’d)

XNX Universal Transmitter

XNX Universal Transmitter Technical Manual

183

Appendix B - Modbus

®

Protocol

XNX Universal Transmitter

Appendix B - Modbus Protocol

183

B.1 Modbus and the XNX transmitter

The XNX

®

gas sensor may be tted with the optional Modbus

®

interface card (P/N XNX-MB). Authoritative information on

the Modbus protocol can be found at www.modbus.org.

The XNX supports Modbus/RTU over an RS-485 physical

layer. The interface is isolated and includes a switchable 120

Ohm termination resistor. Baud rates from 1200 to 38,400 are

supported with 19,200 as the default (8 data bits, even parity, 1

stop bit).

Most of the operations that are possible with the HART

®

and

local user interfaces can also be performed using the Modbus

interface. This includes test, calibration and conguration

operations. This appendix describes only how to monitor XNX

status using Modbus.

The zero calibration procedure should be performed prior to

the span calibration. The calibration procedure is in Section

3.2.1.

Some of the relevant Modbus holding registers are listed in the

following table. In most installations, the XNX transmitter reads

only the rst ve registers (four data). The assignment of the rst

eight registers (or six data) is identical to the Honeywell Analytics

XCD gas sensor.

Building an effective Modbus automatic gas detection system

requires checking for faults (using iFaultWarnNumber or

iAlmFltLev) and checking iMonitoringState to conrm that the

XNX is not inhibited or in calibration. The pseudo code example

in Figure 247 suggests computation that should be made in

external automation equipment.

See Section 2.3.4 for information on installing the optional

Modbus hardware. See Section 2.5.1 for information on

setting the Modbus baud rate and address using the local

user interface. See Section A.1.1 for information on setting the

Modbus parameters using the HART interface.

if(

((fCurrentConc < TLV) or (iAlmFltLev & 3 == 0))

// low concentration

and

((iFaultWarnNumber < 1000) or (iAlmFltLev & 64 == 0))

// no fault

and

((iMonitoringState == 1) or (iMonitoringState == 7))

// not inhibited

and

(

(Transport layer SW indicates good Comm.)

or

(iHeartBeat changes every 5 seconds)

) // Modbus link healthy

) Then the area is safe.

Figure 247. Modbus Pseudo Code Example

Modbus connections are shown in the ﬂollowing ﬁgure.

XNX Universal Transmitter

Appendix B - Modbus Protocol

184

Use shorting jumper

supplied to maintain

connection during

service

3-5

3-4

3-3

3-2

3-1

3-6

3-7

3-8

3-9

A

-

S5 EOL Term

-

+

A

B

S

TB-3

Modbus

In

Out

R =120Ω

T

3-10

S

Figure 248. Modbus connections

XNX Universal Transmitter

Appendix B - Modbus Protocol

185

B.2 Modbus Registers

Modbus Holding

Register Address

Datatype Variable Name Description

40001 Int16 ID MSB always 0x24 to facilitate automatic identication. LSB repeat of Modbus address.

40002 Int16 ID Identical to 40001

40003 to 40004 Float32 fCurrentConc

The reported gas concentration in current measurement units. For example, methane at 50% LEL would be reported as 50.0 here.

This concentration is forced to zero during inhibit mode.

40005 int16 iFaultWarnNumber

This is the integer representation of the fault status. If any fault exists this will take a value in the range 1000 to 1999. Otherwise,

if any warning exists, this will take a value in the range 1 to 999. Normally, this has the value zero. For example, if the XNX

temperature is out of range, this will take the value 1103.

40006 int8 iAlmFltLev

This register contains 4 meaningful bits regarding the presence of alarms or faults. The bit assignments are as follows: Bit 0:

AL1

active Bit 1: AL2 active Bit 4: Warning active Bit 6: Fault Active All others: For future expansion

XNX Universal Transmitter

Appendix B - Modbus Protocol

186

Modbus Holding

Register Address

Datatype Variable Name Description

40007

uint8 iMonitoringState

This has the following meanings:

0

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21-

255

reserved

normal monitoring

in warm-up

long-term inhibit

alarm simulation

fault simulation

Loop current stimulated

in warning MFlt

in Instrument Flt

in beam block

in bump test

short-term inhibit

performing zero calibration

performing span calibration

in pre-zero calibration

in pre-span calibration

in post-zero calibration, successful

in post-span calibration, successful

in post-zero calibration, failed

in post-span calibration, failed

in align Excel mode

for future expansion

40008 int16 iHeartBeat

This Heartbeat is provided to facilitate detection of communications problems in programming environments where the transport-

layer communication error information is unavailable. This increments approximately every 5 seconds.

It is the responsibility of the system integrator to notify plant personnel if a Modbus master fails to communicate with the XNX. This

register can facilitate this notication.

40009 to 40010 oat32 fSensorLifeDays This indicates the time remaining before the ECC sensor must be calibrated or replaced.

XNX Universal Transmitter

Appendix B - Modbus Protocol

187

Modbus Holding

Register Address

Datatype Variable Name Description

40011

int8 iMeasurementUnits

The meaning of this datum is as enumerated below:

0

1

2

3

4

5

6

7

8

9

10

11

12 to

255

Default

mg/m3

g/m3

%vol

ppm

%LEL

UEG

Ratio

%LEL*M

ppm*m

EG*m

%vol * meter

for future expansion

40012 to 40014 string[5] strGenericUnits User-dened 5 character string description for installed generic mA sensor

40015 int8 iWinTemp If a Searchline Excel is tted, this is the temperature of the window. Otherwise, this is the temperature of the window.

40016 int8 iTransTemp Temperature of the XNX in Celcius.

40017 int8 iSensorTemp Temperature of the sensor (Optima, Excel, ECC, etc)

40018 to 40026 string[18] strTransmitterID User-congured transmitter name.

40027 to 40035 string[18] sDateTime Format is “mm/dd/yy hh:mm:ss”. Month and day inverted if so congured.

40036

int8 iSensorType

The meaning of this datum is as enumerated below

1

2

3

4

5

7

Others

mV Bridge

Electrochemical Cell with toxic cartridge

Electrochemical Cell with O2 cartridge

Optima

Excel

generic mA input

for future expansion

40037 oat32 f_mA_Out The current produced by the XNX in milliamperes.

XNX Universal Transmitter

Appendix B - Modbus Protocol

188

Modbus Holding

Register Address

Datatype Variable Name Description

40038 int16 iTransVoltage24000 The voltage supplied to the XNX at the nominal 24.0 volt input, in millivolts.

40039 int16 iTransVoltage_3300 The voltage on a nominal 3.3 volt supply in the XNX, in millivolts.

40041 int16 iOptional3300 The voltage on a nominal 3.3 volt supply in the XNX option board, in millivolts.

40042 int16 iPersonality3300 The voltage on a nominal 3.3 volt supply in the XNX personality board, in millivolts.

40043 int16 iPersonality5000 The voltage on a nominal 5.0 volt supply in the XNX personality board, in millivolts.

40044 int16 iSensVoltage24000 The voltage supplied to an Optima or Excel sensor at the nominal 24.0 volt input, in millivolts.

40045 int16 iSensVoltage_5000 The voltage on a nominal 5.0 volt supply in Optima or Excel, in millivolts.

40046 to 40079 Contact HA for details.

40080 to 40081 int32 iTransSn Serial number of XNX.

40082 to 40083 int32 iSensSn Serial number of Optima, Excel, or ECC cartridge.

40084 int8 iSensSwVer Integer representation of software version in external sensor or mV personality module

40085 int8 iTransSwVer Software version of XNX.

40086 to 40155 Contact HA for details.

XNX Universal Transmitter

Appendix B - Modbus Protocol

189

XNX Universal Transmitter

XNX Universal Transmitter Technical Manual

191

Appendix C - Warranty

XNX Universal Transmitter

Appendix C - Warranty

191

Warranty Statement

All products are designed and manufactured to the latest internationally recognized standards by Honeywell Analytics under a Quality

Management System that is certied to ISO 9001.

The XNX

®

Universal Transmitter is warranted by Honeywell Analytics (herein referred to as ‘HA’) to be free from defects in material or

workmanship under normal use and service for:

Device Warranty Terms

XNX Universal Transmitter

(excludes consumables)

36 months from date of shipment to buyer

XNX Electrochemical Sensors

(Part Number XNX-XS****)

Multi-Purpose Detector (MPD)

12 months from date of commissioning by an approved Honeywell Analytics representative

or

18 months from date of shipment from Honeywell Analytics, whichever is sooner

Service in the eld or at the customer’s premises is not covered under these warranty terms. Time and travel expenses for on-site warranty

services will be charged at Honeywell Analytics’ normal billing rates. Contact your Honeywell Analytics Service Representative for information

on Service Contracts.

Warranty Conditions

1. The Honeywell Analytics (HA) Limited Product Warranty only extends to the

sale of new and unused products to the original buyer where purchased

from HA or from a HA authorized distributor, dealer or representative. Not

covered are: consumable items such as dry-cell batteries, lters and fuses

or routine replacement parts due to the normal wear and tear of the product;

any product which in HA’s opinion has been altered, neglected, misused or

damaged by accident or abnormal conditions of operation, handling, use or

severe sensor poisoning; defects attributable to improper installation, repair by

an unauthorized person or the use of unauthorized accessories/parts on the

product

2. Any claim under the HA Product Warranty must be made within the warranty

period and as soon as reasonably possible after a defect is discovered. If a

Warranty claim is being sought it is the responsibility of the buyer to obtain a

Service Event number (SE#) from HA and if practical return the product clearly

marked with the SE# and a full description of the fault.

3. HA, at its sole discretion, may elect to send replacement goods to buyer prior

to receipt of the defective goods. Buyer agrees to return defective goods with

in 30 days or to pay for the replacement goods.

4. Buyer is responsible for transportation costs from the buyer’s location to HA.

HA is responsible for transportation costs from HA’s location to the buyer.

5. If in the case of a xed installation or when it is not practical to return the

product, the buyer should submit a claim to HA Service Department. A service

engineer will attend on site on a day rate basis. Where a valid warranty claim

is identied, the faulty product will be repaired or replaced free of charge. A

warranty claim will be accepted if all conditions contained within this Warranty

are met.

6. When, in the opinion of HA, a warranty claim is valid, HA will repair or replace

the defective product free of charge and send it or any replacement back

to the buyer. If, in the opinion of HA the warranty claim is not valid, HA will,

at the option of the buyer, return the unit unaltered at the buyer’s expense,

repair the unit at the then prevailing rates, replace the unit with an appropriate

replacement item at the then prevailing price, or discard the unit. HA reserves

the right to charge for any attendance by its service engineer at the usual

rates in force at the time the claim was received.

7. In no event shall HA’s liability exceed the original purchase price paid by the

buyer for the product.

Consumer Claims

If you purchased your HA product as a consumer, the above warranty conditions do

not affect your rights under any applicable consumer protection legislation.

Honeywell Analytics reserves the right to change this policy at any time. Contact

Honeywell Analytics for current warranty information.

XNX Universal Transmitter

XNX Universal Transmitter Technical Manual

193

Index

XNX Universal Transmitter

Index

193

Symbols

4-20mA output 11, 37, 38

705, calibrating 94

705HT, calibrating 94

A

accessories 156

air speed, operating 132

alarm/fault simulation 81

alarm/fault status 83

alarms 67

alarm settings 83

approvals,

hazardous area 129

performance 129

B

battery life 128

baud rate 184

beam block options 72

bump test 22, 99, 100

C

cable

length 52

ports 128

recommended 132

cal gas range 134, 135,

133

Calibration 93–106

calibration

for MPD sensors 101

gas 90

gas ow adapter 15, 156

interval 71

span 90, 91

zero 90, 91

cal point 130, 131, 133

cartridges

catalytic bead replace-

ment 155

IR replacement 155

part numbers 130, 131,

133

Cautions 7

ceiling mount bracket kit

16, 156

cells, replacement 154

certications 11, 12

by part number series

145–147

chronological list, event,

by day 88

collecting cone 16, 157

Communications 11

conguration

displaying 22

verifying 79

congure menu 61

construction material 128

Control Drawings 159–166

remote sensor mount

165

controls 18

cover 12

cross-interferents 141

D

daisy-chain 32

date 22, 58, 81

dimensions 128

duct mount kit 16, 156

E

easy reset 78

EC. See

electrochemical

sensor

electrochemical sensor 40

cartridge, replacing with

different type 106

cartridge, replacing with

same type 105

cell 105

installation 40

operational life 98

enclosure

aluminum 12

stainless steel 12

event history 81, 87

F

eldbus

options 77

settings 83, 86

nish, marine 12

ow housing 97

force relays 80, 81

Foundation Fieldbus 54

functional gas test.

See

bump test

G

gas calibration 22, 90

gas data 83, 85

gases, selectable 61

gas name, changing 61

general status screen 19,

55

greases, airborne 141

H

2

S sensors, calibrating

94

HART

®

devices 52

handheld online menu

1751–179

interface 167–169

local 14

local handheld 51

output 11

protocol 51, 167–182

hex key 13

humidity 1284, 130, 131,

133

hydrogen sensors 142

I

information 7

information menu 83

inhibit 79

Installation and Operation

27–88

installation

daisy-chain 31, 32

maximum distance 31,

33

multiple transmitter 31

single transmitter 31

types of 31

intrinsic safety 5, 14

Introduction 9–26

IP rating 1284, 130

IS. See

intrinsic safety

XNX Universal Transmitter

Index

194

J

jumpers 38

jumper switch 54

L

language 22

selecting 57

latching 69

LCD. See

liquid crystal

display

LDL.

See

lower detection

limit

LED. See

light emitting

diode

light emitting diode 18,

20, 56

test 56

liquid crystal display 46,

56

lower detection limit 130,

131, 133

M

magnetic wand/screw-

driver 13, 17, 158

main menu 22

Maintenance 103–106

mA devices

generic, connecting 47

mA levels 70

mA

level settings 83, 86

output, calibrating 90,

100

output, forcing 80

sensor type 60

menu map 23

menu structure 20

messages

fault 113–119

informational 123–124

warning 1084–1117

Modbus

®

15, 54

interface card 184

protocol 183–188

registers 186–189

mounting kit, EC sensor

remote 41

mounting the enclosure

128

MPD. See

multi-purpose

detector

multi-purpose detector

155

ammable sensor 98

interface adapter 156

performance 142

sensor cartridge 104

multidrop mode 52

mV

personality wiring 43

remote sensor 45

N

navigation 18

non-latching. See

latching

notes 7

numeric format, selecting

69

O

off-scale readings 5

operating voltage 128

option board 38, 54

ordering information 152

organic vapors 141

O-ring, front cover 158

P

part numbers 83

parts list 13

passcode screens 79

personality board 36, 38

IR 48

mV 42, 44

personality, options, and

display (POD) 14, 36

personality wiring

electrochemical 39

IR 46, 48

pipe mount kit 15, 154

POD. See

personality, op-

tions, and display

point-to-point mode 51

power consumption 128

pressure

barometric 130, 131, 134

operating 132

product description 10, 12

R

range 67, 130, 131, 133

range/alarm settings 83,

85

real time clock 128

Reex cell fault diagnosis

10

relay

data 86

options 14, 53

settings 83

remote

sensor mounting kit 16,

156

gassing kit 16, 157

MPD mounting 157

response time 130, 131,

133

S

Safety 5–8

screwdriver 158

Searchline Excel 50, 56,

96

connecting 46

Searchpoint Optima Plus

50

connecting 46

security access level 59

security, conguring 78

Sensepoint HT, calibrat-

ing 94

sensors 14–26

cross-sensitivity 135–141

data 83, 85

location 28

mounting 28

performance 133

replacement 153

status 83, 85

types 59, 72

serial number 83

settings, displaying 22

shorting jumpers 157

signal 128

silicone compounds 141

simulation switch 38, 54

soft reset 101, 102

solvents 141

spares 156

Specications 127-158

stopping plugs 12, 158

switch conguration 37

system conditioning 142

XNX Universal Transmitter

Index

195

T

temperature 128, 130

ranges, extended 134

range, standard 134

terminal blocks 38, 54

connections 38

jumpers 157

pluggable 158

termination 128

test menu 79

time 22, 58, 83

transmitter

conguring 57

data 83, 84

information, displaying

21

status 83, 83

testing 22

U

units name, changing 61

units, setting 70

user interface 128

W

warm-up time 132

Warnings 5

Warnings and Faults

107–126

warranty 191–192

weatherproof cap 16, 157

weather protector 17, 157

weight 128

wiring 30

isolated 37

X

XNX front panel 17

Z

zero calibration 184

Find out more

www.honeywellanalytics.com

Americas

Honeywell Analytics

405 Barclay Boulevard

Lincolnshire, IL 60069

Tel: +1 847 955 8200

Toll free: +1 800 538 0363

Fax: +1 847 955 8208

[email protected]

Europe, Middle East, and Africa

Life Safety Distribution AG

Javastrasse 2

8604 Hegnau

Switzerland

Tel: +41 (0)1 943 4300

Fax: +41 (0)1 943 4398

Tel: +41 (0)1 943 4300

Fax: +41 (0)1 943 4398

[email protected]

Technical Services

[email protected]

www.honeywell.com

#508, Kolon Science Valley (l)

187-10 Guro-Dong, Guro-Gu

Seoul, 152-050

Korea

Tel: +82 (0)2 6909 0307

Fax: +82 (0)2 2025 0328

[email protected]

1998M0738 Revision 12

June 2015

Please Note:

While every effort has been made to ensure

accuracy in this publication, no responsibility can

be accepted for errors or omissions.

Data may change, as well as legislation, and

you are strongly advised to obtain copies of the

most recently issued regulations, standards and

guidelines.

This publication is not intended to form the basis

of a contract.

Honeywell XNX UNIVERSAL Transmitter

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XNX Universal Transmitter Technical Manual

Specifications

Honeywell XNX UNIVERSAL Questions and Answers

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