XNX UNIVERSAL XNX Universal Transmitter Technical Manual

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XNX Universal Transmitter

Introduction

• 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.

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XNX Universal Transmitter Technical Manual - Page 9