FLUKE 9102S/725-KIT Lo-Temp Dry-Well and Process Calibrator User Manual

9102S

Dry-Well Calibrator

Users Guide

9102S___ugeng0000

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Limited Warranty & Limitation of Liability

Each product from Fluke Corporation (“Fluke”) is warranted to be free from defects in material and

workmanship under normal use and service. The warranty period is one year for Dry-Well Calibrators. The

warranty period begins on the date of the shipment. Parts, product repairs, and services are warranted for 90

days. The warranty extends only to the original buyer or end-user customer of a Fluke authorized reseller,

and does not apply to fuses, disposable batteries or to any other product, which in Fluke’s opinion, has been

misused, altered, neglected, or damaged by accident or abnormal conditions of operation or handling. Fluke

warrants that software will operate substantially in accordance with its functional specications for 90 days

and that it has been properly recorded on non-defective media. Fluke does not warrant that software will be

error free or operate without interruption. Fluke does not warrant calibrations on the Field Metrology Well.

Fluke authorized resellers shall extend this warranty on new and unused products to end-user customers

only but have no authority to extend a greater or different warranty on behalf of Fluke. Warranty support is

available if product is purchased through a Fluke authorized sales outlet or Buyer has paid the applicable

international price. Fluke reserves the right to invoice Buyer for importation costs of repairs/replacement

parts when product purchased in one country is submitted for repair in another country.

Fluke’s warranty obligation is limited, at Fluke’s option, to refund of the purchase price, free of charge

repair, or replacement of a defective product which is returned to a Fluke authorized service center within

the warranty period.

To obtain warranty service, contact your nearest Fluke authorized service center or send the product, with

a description of the difculty, postage, and insurance prepaid (FOB Destination), to the nearest Fluke au-

thorized service center. Fluke assumes no risk for damage in transit. Following warranty repair, the product

will be returned to Buyer, transportation prepaid (FOB Destination). If Fluke determines that the failure was

caused by misuse, alteration, accident or abnormal condition or operation or handling, Fluke will provide an

estimate or repair costs and obtain authorization before commencing the work. Following repair, the product

will be returned to the Buyer transportation prepaid and the Buyer will be billed for the repair and return

transportation charges (FOB Shipping Point).

THIS WARRANTY IS BUYER’S SOLE AND EXCLUSIVE REMEDY AND IS IN LIEU OF ALL OTH-

ER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY IMPLIED

WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. FLUKE

SHALL NOT BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL. OR CONSEQUENTIAL

DAMAGES OR LOSSES, INCLUDING LOSS OF DATA, WHETHER ARISING FROM BREACH OF

WARRANTY OR BASED ON CONTRACT, TORT, RELIANCE OR ANY OTHER THEORY.

Since some countries or states do not allow limitation of the term of an implied warranty, or exclusion or

limitation of incidental or consequential damages, the limitations and exclusions of this warranty may not

apply to every buyer. If any provision of this Warranty is held invalid or unenforceable by a court of compe-

tent jurisdiction, such holding will not affect the validity or enforceability of any other provision.

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Table of Contents

1 Before You Start .......................................................................1

1.1 Introduction ............................................................................................... 1

1.2 Symbols .................................................................................................... 2

1.3 Safety Information ..................................................................................... 3

1.3.1 WARNINGS ...............................................................................................3

1.3.2 CAUTIONS ................................................................................................5

1.4 Authorized Service Centers ...................................................................... 6

2 Specications and Environmental Conditions ......................9

2.1 Speciﬁcations ........................................................................................... 9

2.2 Environmental Conditions ......................................................................... 9

3 Quick Start .............................................................................. 11

3.1 Unpacking .............................................................................................. 11

3.2 Set-up ..................................................................................................... 11

3.3 AC Power Operation ............................................................................... 11

3.4 DC Power Operation ............................................................................... 12

3.5 Setting the Temperature .......................................................................... 12

4 Parts and Controls .................................................................13

4.1 Rear Panel .............................................................................................. 13

4.2 Front Panel .............................................................................................. 14

4.3 Accessories ............................................................................................ 15

5 General Operation ..................................................................17

5.1 Setting the Temperature .......................................................................... 17

5.2 Changing Display Units .......................................................................... 17

6 Controller Operation ..............................................................19

6.1 Well Temperature .................................................................................... 19

6.2 Temperature Set-point ............................................................................ 19

6.2.1 Programmable Set-points .............................................................................19

6.2.2 Set-point Value ..............................................................................................21

6.2.3 Temperature Scale Units ...............................................................................21

6.3 Scan ........................................................................................................ 22

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9102S Dry-Well Calibrator

6.3.1 Scan Control ..................................................................................................22

6.3.2 Scan Rate ......................................................................................................22

6.4 Set-point Resistance ............................................................................... 22

6.5 Secondary Menu..................................................................................... 23

6.6 Heater Power .......................................................................................... 23

6.7 Proportional Band ................................................................................... 24

6.8 Controller Conﬁguration .......................................................................... 25

6.9 Operating Parameters ............................................................................ 25

6.10 High Limit ................................................................................................ 25

6.11 Serial Interface Parameters .................................................................... 25

6.11.1 Baud Rate .....................................................................................................26

6.11.2 Sample Period ...............................................................................................26

6.11.3 Duplex Mode .................................................................................................26

6.11.4 Linefeed ........................................................................................................27

6.12 Calibration Parameters ........................................................................... 27

6.12.1 R0 ..................................................................................................................28

6.12.2 ALPHA ...........................................................................................................28

6.12.3 DELTA ............................................................................................................29

7 Digital Communication Interface ..........................................31

7.1 RS-232 Connection ................................................................................. 31

7.2 Interface Commands .............................................................................. 32

8 Test Probe Calibration ...........................................................35

8.1 Calibrating a Single Probe ...................................................................... 35

8.2 Dry-well Characteristics .......................................................................... 35

8.2.1 Stabilization and Accuracy ..........................................................................35

9 Calibration Procedure ............................................................37

9.1 Calibration Points .................................................................................... 37

9.2 Calibration Procedure ............................................................................. 37

9.2.1 Compute DELTA ............................................................................................37

9.2.2 Compute R0 and ALPHA ..............................................................................38

9.2.3 Accuracy and Repeatability ..........................................................................39

10 Maintenance ...........................................................................41

11 Troubleshooting .....................................................................43

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iii

11.1 Troubleshooting Problems, Possible Causes, and Solutions .................. 43

11.2 CE Comments ......................................................................................... 44

11.2.1 EMC Directive ...............................................................................................44

11.2.2 Low Voltage Directive (Safety) ......................................................................44

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9102S Dry-Well Calibrator

Tables

Table 1 International Electrical Sympols used on products ............................... 2

Table 2 Speciﬁcations ........................................................................................ 9

Table 3 Accessories ......................................................................................... 15

Table 4 Controller communications commands .............................................. 32

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Figures

Figure 1 12 V DC Power Source Polarity ........................................................ 12

Figure 2 Back Panel ......................................................................................... 13

Figure 3 Front Panel ......................................................................................... 14

Figure 4 Controller operation ﬂowchart ........................................................... 20

Figure 5 Serial Cable Wiring ............................................................................ 31

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Before You Start

Introduction

Before You Start1

Introduction1.1

The Fluke Calibration 9102S Mid-Range Field Calibrator is a small portable instru-

ment designed for quick on-site checks and calibration of thermocouple and RTD

temperature probes. This instrument is small enough to use in the eld, and accurate

enough to use in the lab. Calibrations may be done over a range of –10°C to 122°C

(14°F to 252°F). Temperature display and setpoint resolution are 0.1 degrees.

The instrument features:

A controlled temperature block with two calibration insert sleeves

●●

Rapid heating and cooling

●●

Prop stand

●●

Handle strap

●●

RS-232 interface capability

●●

+12 Volt DC battery option

●●

Built in programmable features include:

Temperature scan rate control

●●

Eight set-point memory

●●

Adjustable readout in °C or °F

●●

The temperature is accurately controlled by Fluke’s digital controller. The control-

ler uses a precision platinum RTD as a sensor and controls the well temperature with

transistor driven thermoelectric devices.

The LED front panel shows the current well temperature. The temperature may be set,

using the control buttons, to any desired temperature within the instrument’s range.

Multiple fault protection devices insure user and instrument safety and protection.

This dry-well calibrator was designed for portability, low cost, and ease of operation.

Through proper use and maintenance, the instrument will provide continued accurate

calibration of temperature sensors and devices. The user should be familiar with the

safety guidelines and operating procedures of the calibrator as described in the instruc-

tion manual.

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9102S Dry-Well Calibrator

Symbols

Symbols1.2

Table 1 lists the International Electrical Symbols. Some or all of these symbols may be

used on the instrument or in this manual.

Table 1 International Electrical Sympols used on products

Symbol Description

AC (Alternating Current)

AC-DC

Battery

Complies with European Union directives

Double Insulated

Electric Shock

Fuse

PE Ground

Hot Surface (Burn Hazard)

Read the User’s Guide (Important Information)

Off

Canadian Standards Association

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Before You Start

Safety Information

Symbol Description

C-TICK Australian EMC mark

The European Waste Electrical and Electronic Equipment (WEEE) Directive (2002/96/

EC) mark.

Safety Information1.3

Use this instrument only as specied in this manual. Otherwise, the protection provid-

ed by the instrument may be impaired. Refer to the safety information in the Warnings

and Cautions sections below.

The following denitions apply to the terms “Warning” and “Caution”.

“Warning” identies conditions and actions that may pose hazards to the user.

●●

“Caution” identies conditions and actions that may damage the instrument

●●

being used.

1.3.1 WARNINGS

To avoid personal injury, follow these guidelines.

GENERAL

DO NOT

●●

use this instrument in environments other than those listed in the

User’s Guide.

Inspect the instrument for damage before each use.

●●

DO NOT use the instrument

if it appears damaged or operates abnormally.

Follow all safety guidelines listed in the user’s manual.

●●

Calibration Equipment should only be used by Trained Personnel.

●●

If this equipment is used in a manner not specied by the manufacturer, the

●●

protection provided by the equipment may be impaired.

Before initial use, or after transport, or after storage in humid or semi-humid

●●

environments, or anytime the dry-well has not been energized for more than

10 days, the instrument needs to be energized for a “dry-out” period of 2 hours

before it can be assumed to meet all of the safety requirements of the IEC

1010-1. If the product is wet or has been in a wet environment, take necessary

measures to remove moisture prior to applying power such as storage in a low

humidity temperature chamber operating at 50 degree centigrade for 4 hours or

more.

DO NOT

●●

use this instrument for any application other than calibration work.

The instrument was designed for temperature calibration. Any other use of the

instrument may cause unknown hazards to the user.

Completely

●●

unattended operation is not recommended.

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9102S Dry-Well Calibrator

Safety Information

Overhead clearance is required.

●●

DO NOT place the instrument under a cabinet

or other structure. Always leave enough clearance to allow for safe and easy

insertion and removal of probes.

If the instrument is used in a manner not in accordance with the equipment

●●

design, the operation of the dry-well may be impaired or safety hazards may

arise.

This instrument is intended for indoor use only.

●●

BURN HAZARDS

DO NOT

●●

turn the instrument upside down with the inserts in place; the inserts

will fall out.

DO NOT

●●

operate near ammable materials.

Use of this instrument at

●●

HIGH TEMPERATURES for extended periods of

time requires caution.

DO NOT

●●

touch the well access surface of the instrument.

The block vent may be very hot due to the fan blowing across the heater block

●●

of the dry-well.

The temperature of the well access is the same as the actual display

●●

temperature, e.g. if the instrument is set to 375°C and the display reads 375°C,

the well is at 375°C.

For top loading dry-wells, the top sheet metal of the dry-well may exhibit

●●

extreme temperatures for areas close to the well access.

The air over the well can reach temperatures greater that 200°C for high

●●

temperature (400°C and higher) dry-wells. Note: Probes and inserts may

be hot and should only be inserted and removed from the instrument when

the instrument is set at temperatures less than 50°C. Use extreme care when

removing hot inserts.

DO NOT

●●

turn off the instrument at temperatures higher than 100°C. This could

create a hazardous situation. Select a set-point less than 100°C and allow the

instrument to cool before turning it off.

The high temperatures present in dry-wells designed for operation at 300°C

●●

and higher may result in res and severe burns if safety precautions are not

observed.

A re may occur if a short circuit occurs along the input cord and no protective

●●

devices are on the DC input source. For short circuit protection using a battery,

a fuse is required at the battery terminals.

ELECTRICAL SHOCK

●●

DO NOT

●●

operate this instrument without a properly grounded, properly

polarized power cord. Electric shock may result.

DO NOT

●●

connect this instrument to a non-grounded, non-polarized outlet.

Ensure the earth ground to the outlet is properly connected. Electrical shock

may result if the outlet is not installed correctly.

Always replace the power cord with an approved cord of the correct rating and

●●

type.

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Before You Start

Safety Information

HIGH VOLTAGE

●●

is used in the operation of this equipment. SEVERE

INJURY or DEATH may result if personnel fail to observe safety precautions.

Before working inside the equipment, turn power off and disconnect power

cord.

If supplied with user accessible fuses, always replace the fuse with one of the

●●

same rating, voltage and type.

BATTERY PACK

To avoid the risk of electric shock or re, do not use the charger outdoors or in

●●

a dusty, dirty, or wet environment.

If the cord, case, or plug of the charger is damaged in any way, discontinue its

●●

use immediately and have it replaced. Never disassemble the charger.

The battery may contain chemicals that are hazardous. To avoid the risk of

●●

exposure to dangerous substances or explosion, immediately discontinue use

of the battery if it leaks or becomes damaged. Never allow the battery to be

shorted, heated, punctured, dropped, or crushed.

Store the battery where it will not come into contact with metal or uids

●●

that might short circuit the battery and where it will be safe from excessive

temperatures.

When no longer usable, the battery must be recycled. The battery may be

●●

returned to the seller for recycling. Do not dispose of the battery in a landll.

Never dispose of the battery in re as there is danger of explosion which may

●●

cause injury or property damage.

1.3.2 CAUTIONS

Always operate this instrument at room temperature between 41°F and 122°F

●●

(5°C to 50°C). Allow sufcient air circulation by leaving at least 6 inches (15

cm) of clearance around the instrument.

Component lifetime can be shortened by continuous high temperature

●●

operation.

DO NOT

●●

use uids to clean out the well.

Never introduce any foreign material

●●

into the probe hole of the insert. Fluids,

etc. can leak into the instrument causing damage.

DO NOT

●●

change the values of the calibration constants from the factory set

values. The correct setting of these parameters is important to the safety and

proper operation of the calibrator.

DO NOT

●●

drop the probe sheath in to the well. This type of action can cause a

shock to the sensor and affect the calibration.

The instrument and any thermometer probes used with it are sensitive

●●

instruments that can be easily damaged. Always handle these devices with care.

DO NOT allow them to be dropped, struck, stressed, or overheated.

The Factory Reset Sequence (see Section , Troubleshooting) should be

●●

performed only by authorized personnel if no other action is successful in

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9102S Dry-Well Calibrator

Authorized Service Centers

correcting a malfunction. You must have a copy of the most recent Report of

Calibration to restore the calibration parameters.

DO NOT

●●

operate this instrument in an excessively wet, oily, dusty, or dirty

environment. Always keep the well and inserts clean and clear of foreign

material.

The dry-well is a precision instrument. Although it has been designed for

●●

optimum durability and trouble free operation, it must be handled with care.

Always carry the instrument in an upright position to prevent the probe sleeves

from falling out. The convenient handle strap allows for one hand carrying.

If a mains supply power uctuation occurs, immediately turn off the instrument.

●●

Power bumps from brown-outs could damage the instrument. Wait until the

power has stabilized before re-energizing the instrument.

The prop stand was not designed to be used as a handle for carrying the

●●

instrument. To avoid damage, do not force the prop stand beyond the incline

positions of the instrument.

Allow for probe expansion inside the well as the block heats.

●●

Most probes have handle temperature limits. Be sure that the probe handle

●●

temperature limit is not exceeded in the air above the instrument.

1.4 Authorized Service Centers

Please contact one of the following authorized Service Centers to coordinate service

on your Fluke product:

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Before You Start

Authorized Service Centers

When contacting these Service Centers for support, please have the following infor-

mation available:

Model Number

●●

Serial Number

●●

Voltage

●●

Complete description of the problem

●●

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Specications and Environmental Conditions

Environmental Conditions

Specications and Environmental Conditions2

Specications2.1

SpeciﬁcationsTable 2

Range –10°C to 122°C (14°F to 252°F) at an ambient of 23°C

Accuracy ±0.25°C

Stability ±0.05°C

Resolution 0.1°C or °F

Well-to-Well

Uniformity

±0.2°C with sensors of similar size at equal depths within wells

Heating Times ambient to 100°C: 10 minutes

Stabilization 7 minutes

Cooling Times ambient to 0°C: 10 minutes

Well Depth 4 inches (102 mm)

Removable Inserts refer to Section , Accessories

Power 94–234 VAC (±10%), 50/60 Hz, 50 W; or 12 VDC

Size 4” H x 6” W x 6.9”D

(100 mm x 152 mm x 175 mm)

Weight 4 lb. (1.8 Kg)

Safety Conforms to EN61010-1

Conforms to CAN/CSA C22.2 No.1010.1

UL3111 and ANSI/ISA-S82.01

Fault Protection Sensor burnout protection, over-temperature cutout, and electrical fuses

Fuse Rating 250 V, 3 A FF (very fast acting) NO USER SERVICEABLE PARTS

Environmental Conditions2.2

Although the instrument has been designed for optimum durability and trouble-free

operation, it must be handled with care. The instrument should not be operated in an

excessively dusty or dirty environment. Maintenance and cleaning recommendations

can be found in the Maintenance Section of this manual.

The instrument operates safely under the following conditions:

temperature range: 5–50°C (41–122°F)

●●

ambient relative humidity: 15–50%

●●

pressure: 75kPa–106kPa

●●

mains voltage within ±10% of nominal

●●

vibrations in the calibration environment should be minimized

●●

altitudes less than 2000 meters

●●

indoor use only

●●

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Quick Start

AC Power Operation

Quick Start3

Unpacking3.1

Unpack the dry-well carefully and inspect it for any damage that may have occurred

during shipment. If there is shipping damage, notify the carrier immediately.

Verify that the following components are present:

9102S Dry-well

●●

Power Cord

●●

User’s Guide with Report of Calibration

●●

RS-232 Cable

●●

9930 Interface-it Software

●●

3102-3 Insert, 3/16”

●●

3102-4 Insert, 1/4”

●●

Insert Removal Tool

●●

Set-up3.2

Place the calibrator on a at surface with at least 6 inches of free space around the

instrument. Always leave enough clearance in front of the instrument to allow for

safe and easy insertion and removal of probes. The prop stand may be swung down to

raise the front of the instrument from a horizontal position. Plug the power cord into a

grounded mains outlet. Observe that the nominal voltage corresponds to that indicated

on the calibrator.

Turn on the power to the calibrator by toggling the power switch on. The fan should

begin quietly blowing air through the instrument and the controller display should

illuminate after 3 seconds. After a brief self-test the controller should begin normal

operation. If the unit fails to operate, check the power connection.

The display should show the well temperature and the well heater will bring the tem-

perature of the well to the set-point temperature.

After using the calibrator, allow the well to cool by setting the temperature to 25°C

and waiting 1/2 hour before turning the instrument off.

AC Power Operation3.3

Plug the dry-well power cord into a mains outlet of the proper voltage, frequency, and

current capability. Refer to Section 3.1, Specications, for the power details. Turn the

dry-well on using the switch on the rear panel. The dry-well will turn on and begin to

heat to the previously programmed temperature set-point. The front panel LED display

will indicate the actual dry-well temperature.

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9102S Dry-Well Calibrator

DC Power Operation

DC Power Operation3.4

This instrument is equipped with a DC power option. The DC option requires a power

source that delivers 12 VDC at 3 amps.

WARNING: A ﬁre may occur if a short circuit occurs along the input cord and

no protective devices are on the DC input source. For short circuit protection

using a battery, a fuse is required at the battery terminals.

The DC power socket is located on the rear panel of the instrument near the AC power

jack. The instrument accepts a 7/32 inch diameter, two-conductor DC power plug

such as Switchcraft® PN. 760. Observe the correct polarity as shown in Figure . The

outside conductor is positive and the inside is negative. The AC power switch on the

rear panel does not switch the DC power.

–

Figure 1 12 V DC Power Source Polarity

The optional Model 9320A Battery Pack, available from Fluke, can be used as a por-

table power source.

Setting the Temperature3.5

Section 6.2, Temperature Set-point, on page 19 explains in detail how to set the

temperature set-point on the calibrator using the front panel keys. The procedure is

summarized here.

Press “SET” twice to access the set-point value.1.

Press 2. u or d arrow to change the set-point value.

Press “SET” to program in the new set-point.3.

Press and hold “EXIT” to return to the temperature display.4.

When the set-point temperature is changed the controller switches the well heater

on or off to raise or lower the temperature. The displayed well temperature gradu-

ally changes until it reaches the set-point temperature. The well may require 5 to

10 minutes to reach the set-point depending on the span. Another 5 to 10 minutes is

required to stabilize within ±0.1°C of the set-point. Ultimate stability may take 15 to

20 minutes more of stabilization time.

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Parts and Controls

Rear Panel

Parts and Controls4

The user should become familiar with the dry-well calibrator and its parts: (See Figure

2 on this page and Figure 3 on next page).

Rear Panel4.1

Power Cord - The removable power cord, (Figure ) attaches to the back side of the

instrument. It plugs into a standard 115 VAC (optional 230 VAC) grounded socket.

Figure 2 Back Panel

DC Power Jack - The calibrator can be used with a DC power source. The DC input

jack requires 12V and 3.3 amps. See Figure and the inset of Figure for pinout.

Power Switch - The power switch is located on the back panel of the instrument. The

switch is either on or off. The on position is for normal operation. The off position

disconnects power to the entire unit.

Fan - The instrument utilizes a variable speed fan. Under certain circumstances, the

fan may turn off. The fan shuts off at 100°C and above. Slots at the top and around the

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9102S Dry-Well Calibrator

Front Panel

corners of the instrument are provided for airow. The area around the calibrator must

be kept clear to allow for adequate ventilation. The air is directed from the front to the

back. Allow 6 inches of open space around the calibrator to allow adequate ventilation.

RS-232 - The RS-232 serial port provides a means for connecting the instrument to a

computer or a printer using the included serial cable.

WARNING: Always leave enough clearance in front of the calibrator to allow

for safe and easy installation and removal of probes.

Front Panel4.2

Figure 3 Front Panel

Strap - A strap is provided to aid the user in carrying the instrument in one hand. Slide

your hand into position and secure using the Velcro for a tight t. Be careful when

carrying the instrument while using the strap as inserts can fall out of the wells when

tipped forward. Inspect the strap periodically for wear.

Well Block - Located on the middle of the front panel are the well openings where

probes may be inserted into the well. The block is designed to accept temperature

sensors up to 1/2” (12.7 mm) in diameter. The wells can be made to accept probes

of smaller than 1/2” (12.7 mm) diameter by using optional inserts. Probes should t

snugly into the wells for best results.

Controller Display - The digital display is an important part of the temperature

controller because it not only displays set and actual temperatures but also indicates

various calibrator functions, settings, and constants. The display shows temperatures

in units according to the selected scale °C or °F.

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Parts and Controls

Accessories

Controller Keypad - The four button keypad allows easy setting of the set-point

temperature. The control buttons (SET, d, u, and EXIT) are used to set the calibrator

temperature set-point, access and set other operating parameters, and access and set

calibration parameters.

Setting the control temperature is done directly in degrees of the current scale. It can

be set to one-tenth of a degree Celsius or Fahrenheit.

The functions of the buttons are as follows:

SET – Used to display the next parameter in the menu and to store parameters to the

displayed value.

d (down arrow) – Used to decrement the displayed value of parameters.

u (up arrow) – Used to increment the displayed value.

EXIT – Used to exit a function and to skip to the next function. Any changes made to

the displayed value are ignored.

Accessories4.3

The table below lists optional inserts, carrying case, and battery packs by model

number.

AccessoriesTable 3

Model Description

3102-0 Blank Insert

3102-1 1/16 (1.6 mm) Insert

3102-2 1/8 (3.2 mm) Insert

3102-8 5/32 (4.0 mm) Insert

3102-3 3/16 (4.8 mm) Insert

3102-4 1/4 (6.4 mm) Insert

3102-5 5/16 (7.9 mm) Insert

3102-6 3/8 (9.5 mm) Insert

3102-7 7/16 (11.1 mm) Insert

9308 Rugged Carrying Case

9320A Battery Pack

Call your local Fluke representative for current pricing.

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General Operation

Changing Display Units

General Operation5

Setting the Temperature5.1

Section 6.2, Temperature Set-point, on page 19 explains in detail how to set the

temperature set-point on the calibrator using the front panel keys. The procedure is

summarized here.

Press “SET” twice to access the set-point value.1.

Press 2. u or d to change the set-point value.

Press “SET” to program in the new set-point.3.

Press and hold “EXIT” to return to the temperature display.4.

When the set-point temperature is changed the controller switches the well heater on

or off to raise or lower the temperature. The displayed well temperature gradually

changes until it reaches the set-point temperature. The well may require 5 to 10 min-

utes to reach the set-point depending on the span. Another 5 to 10 minutes is required

to stabilize within ±0.05°C of the set-point. Ultimate stability may take 15 to 20 min-

utes more of stabilization time.

Changing Display Units5.2

This instrument can display temperature in Celsius or Fahrenheit. The temperature

units are shipped from the factory set to Celsius. There are two ways to change to

Fahrenheit or back to Celsius.

1 - Press the “SET” and u simultaneously. The temperature display changes units.

1 - Press the “SET” key three times from the temperature display to show

Un= C

2 - Press the u or d key to change units.

3 - Press “SET” to save the setting or “EXIT” to continue without changing the

setting.

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Controller Operation

Temperature Set-point

Controller Operation6

This chapter discusses in detail how to operate the dry-well temperature controller

using the front control panel. Using the front panel key-switches and LED display the

user may monitor the well temperature, set the temperature set-point in degrees C or F,

monitor the heater output power, adjust the controller proportional band, and program

the calibration parameters, operating parameters, and serial interface conguration.

Operation of the functions and parameters are shown in the owchart in Figure 4 on

next page. This chart may be copied for reference.

In the following discussion a button with the word SET or EXIT inside, a u, or d,

indicates the panel button while the dotted box indicates the display reading. Explana-

tions of the button or display reading are to the right of each button or display value.

Well Temperature6.1

The digital LED display on the front panel allows direct viewing of the actual well

temperature. This temperature value is normally shown on the display. The units, C or

F, of the temperature value are displayed at the right. For example,

100.0 C Well temperature in degrees Celsius

The temperature display function may be accessed from any other function by holding

and releasing the “EXIT” button.

6.2 Temperature Set-point

The temperature set-point can be set to any value within the range and with resolution

as given in the specications. Be careful not to exceed the safe upper temperature limit

of any device inserted into the well.

Setting the temperature involves selecting the set-point memory and adjusting the set-

point value.

Programmable Set-points6.2.1

The controller stores 8 set-point temperatures in memory. The set-points can be quick-

ly recalled to conveniently set the calibrator to a previously programmed temperature

set-point.

To set the temperature, rst select the set-point memory. This function is accessed

from the temperature display function by pressing “SET”. The number of the set-point

memory currently being used is shown at the left on the display followed by the cur-

rent set-point value.

100.0 C Well temperature in degrees Celsius

Access set-point memory

1 100. Set-point memory 1 location, 100°C currently used

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9102S Dry-Well Calibrator

Temperature Set-point

Figure 4

DOWN

SET

Operating

Parameters

SET

SET/EXIT

Cal

SET/EXIT

Serial

Interface

BAUD

Rate

Adjust

BAUD Rate

Sample

Period

Adj. Sample

Period

Duplex

Mode

Adj. Duplex

Mode

Linefeed

Adjust

Linefeed

Select ALPHA

Adjust ALPHA

Select DELTA

Adjust DELTA

EXIT

DOWN

SET

Display Power

Set-Point Resistance

SET

SET/EXIT

SET

Select Setpoint

Adjust Setpoint

Units °C/°F

Scan On/Off

Scan Rate

Display

Temperature

Configuration Menu

Secondary Functions

Adj. HL

SET/EXIT

Units °C/°F

Set Proportional Band

Select R0

Adjust R0

EXIT

DO NOT CHANGE THESE VALUES

SET/EXIT

SET

Cal

SET/EXIT

Select ALPHA

Adjust ALPHA

Select DELTA

Adjust DELTA

Select R0

Adjust R0

DO NOT CHANGE THESE VALUES

SET/EXIT

Press “SET” to step through the menu and

to store the parameter value.

Press “EXIT” briefly to skipaparameter

without storing the parameter value.

Hold “EXIT” (2seconds) to exit the menu

and display the temperature

Menu Legend:

SET/EXIT

Controller operation ﬂowchart

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Controller Operation

Temperature Set-point

To change to another set-point memory press the up or down arrow.

4 50. New set-point memory 4 location, 50°C

Press “SET” to accept the new selection and access the set-point value. Press “EXIT”

to continue and to ignore any changes.

Accept selected set-point memory

Set-point Value6.2.2

The set-point value may be adjusted after selecting the set-point memory and pressing

“SET”.

4 50. Set-point 4 value in°C

If the set-point value does not need to be changed, press and hold “EXIT” to resume

displaying the well temperature. To change the set-point value, press “SET” and then

press the up or down arrow.

60. New set-point value

When the desired set-point value is reached, press “SET” to accept the new value and

access the temperature scale units selection. If “EXIT” is pressed, any changes made

to the set-point are ignored.

Accept new set-point value

Temperature Scale Units6.2.3

The temperature scale units of the controller maybe set by the user to degrees Celsius

(°C) or Fahrenheit (°F). The units are used in displaying the well temperature, set-

point, proportional band, and high limit.

Press “SET” after adjusting the set-point value to change display units.

Un= C Scale units currently selected

Press the up or down arrow to change the units.

Un= F New units selected

Press “SET” to accept the new units or “EXIT” to cancel.

Note: The temperature scale units may also be changed by pressing “SET” and u

when the temperature is displayed.

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Scan

Scan6.3

The scan rate can be set and enabled so that when the set-point is changed the dry-well

heats or cools at a specied rate (degrees per minute) until it reaches the new set-point.

With the scan disabled the dry-well heats or cools at the maximum possible rate.

Scan Control6.3.1

The scan is controlled with the scan on/off function that appears in the main menu

after the temperature scale units.

Sc Scashesforonesecondandthenthecurrentscansetting

is displayed

Off Scanfunctionoff

Press the up or down arrow to toggle the scan on or off.

On Scanfunctionon

Press “SET” to accept the present setting and continue. Press “EXIT” to cancel.

Accept scan setting

Scan Rate6.3.2

The scan rate can be set from 0.1 to 99.9°C/min. The maximum scan rate, however,

is actually limited by the natural heating or cooling rate of the instrument. This rate is

often less than 100°C/min, especially when cooling.

The scan rate function appears in the main menu after the scan control function. The

scan rate units are in degrees Celsius per minute, regardless of the selected units.

Sr Srashesforonesecondandthenthecurrentscanrate

setting is displayed

0.1 Scan rate in°C/min

Press the up or down arrow to change the scan rate.

2.0 New scan rate

Press “SET” to accept the new scan rate and continue. Press “EXIT” to cancel.

Accept scan rate

Set-point Resistance6.4

The set-point resistance is the resistance the instrument is trying to make the control

sensor achieve and is calculated in the rmware using the set-point temperature. This

value is not directly adjustable but is recalculated when the set-point temperature is

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Controller Operation

Heater Power

changed. The set-point resistance is used to perform a calibration adjustment using

the Callendar-Van Dusen R versus T curve t (see Section , Calibration Procedure).

The instrument must be at temperature and stable prior to taking the set-point resis-

tance reading. The set-point resistance can be displayed by pressing the “SET” and d

simultaneously. The set-point resistance is displayed as follows.

SrES SrESashesfortwosecondsandthenthewholenumber

ofthecurrentset-pointresistancesettingisdisplayed

99. Wholenumberportionoftheset-pointresistanceashes

fortwosecondsandthenthefractionportionofthecurrent

set-point resistance setting is displayed

.222 Fractionportionofthecurrentset-pointresistancesetting

The set-point resistance is 99.222.

Secondary Menu6.5

Functions which are used less often are accessed within the secondary menu. The

secondary menu is accessed by pressing “SET” and “EXIT” simultaneously and then

releasing. The rst function in the secondary menu is the heater power display. (See

Figure .)

Heater Power6.6

The temperature controller controls the temperature of the well by pulsing the heater

on and off. The total power being applied to the heater is determined by the duty

cycle or the ratio of heater on time to the pulse cycle time. By knowing the amount of

heating, the user can tell if the calibrator is heating up to the set-point, cooling down,

or controlling at a constant temperature. Monitoring the percent heater power, allows

the user to know the stability of the well temperature. With good control stability the

percent heating power should not uctuate more than ±5% within one minute.

The heater power display is accessed in the secondary menu. Press “SET” and “EXIT”

simultaneously and release. The heater power is displayed as a percentage of full

power.

100.0 C Well temperature

S+E

 Accessheaterpowerinsecondarymenu

SEC FlashesSECforsecondarymenuandthendisplaysthe

heaterpower

12.0P Heater power in percent

To exit out of the secondary menu press “EXIT”. To continue on to the proportional

band setting function press “SET”.

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9102S Dry-Well Calibrator

Proportional Band

Proportional Band6.7

In a proportional controller such as this, the heater output power is proportional to the

well temperature over a limited range of temperatures around the set-point. This range

of temperature is called the proportional band. At the bottom of the proportional band,

the heater output is 100%. At the top of the proportional band, the heater output is 0.

Thus, as the temperature rises the heater power is reduced, which consequently tends

to lower the temperature back down. In this way the temperature is maintained at a

constant level.

The temperature stability of the well and response time depend on the width of the

proportional band. If the band is too wide, the well temperature deviates excessively

from the set-point due to varying external conditions. This is because the power output

changes very little with temperature and the controller cannot respond very well to

changing conditions or noise in the system. If the proportional band is too narrow, the

temperature may swing back and forth because the controller overreacts to tempera-

ture variations. For best control stability, the proportional band must be set for the

optimum width.

The proportional band width is set at the factory as printed on the Report of Calibra-

tion. The proportional band width may be altered by the user if desired to optimize the

control characteristics for a particular application.

The proportional band width is easily adjusted from the front panel. The width may

be set to discrete values in degrees C or F depending on the selected units. The pro-

portional band adjustment is accessed within the secondary menu. Press “SET” and

“EXIT” to enter the secondary menu and show the heater power. Then press “SET” to

access the proportional band.

S+E

 Accessheaterpowerinsecondarymenu

SEC FlashesSECforsecondarymenuandthendisplaysthe

heaterpower

12.0P Heater power in percent

 Accessproportionalband

PrOP Flashespropandthendisplaysthesetting

4.1 Proportionalbandsetting

To change the proportional band press u or d.

10.0 Newproportionalbandsetting

To accept the new setting press “SET”. Press “EXIT” to continue without storing the

new value.

 Acceptthenewproportionalbandsetting

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Controller Operation

Serial Interface Parameters

Controller Conguration6.8

The controller has a number of conguration and operating options and calibration

parameters which are programmable via the front panel. These are accessed from the

secondary menu after the proportional band function by pressing “SET”. Pressing

“SET” again enters the rst of three sets of conguration parameters — operating

parameters, serial interface parameters, and calibration parameters. The menus are

selected using the up and down arrows and then pressing “SET”.

6.9 Operating Parameters

The operating parameters menu is indicated by,

PAr Operating parameters menu

The operating parameters menu contains the High Limit parameter.

High Limit6.10

The High Limit parameter adjusts the upper set-point temperature. The factory default

and maximum are set to 125°C (257°F). The minimum setting is 50°C (122°F). For

safety, a user can adjust the High Limit down so the maximum temperature set-point is

restricted.

HL FlashesHLandthendisplaysthesetting

125 Flashesthecurrentvalueandthendisplaysthevaluefor

adjustment

125 CurrentHighLimitsetting

Press the u or d to adjust the setting.

100 NewHighLimitsetting

To accept the new setting, press “SET”. Press “EXIT” to continue without storing the

new value.

 AcceptthenewHighLimitsetting

Serial Interface Parameters6.11

The serial RS-232 interface parameters menu is indicated by,

SErL SerialRS-232interfaceparametersmenu

Press “SET” to enter the menu. The serial interface parameters menu contains param-

eters which determine the operation of the serial interface. The parameters in the menu

are — baud rate, sample period, duplex mode, and linefeed.

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9102S Dry-Well Calibrator

Serial Interface Parameters

Baud Rate6.11.1

The baud rate is the rst parameter in the menu. The baud rate setting determines the

serial communications transmission rate.

The baud rate parameter is indicated by,

bAUd FlashesbAUdforonesecondandthendisplaysthesetting

2400b Currentbaudrate

The BAUD rate of the serial communications may be programmed to 300, 600, 1200,

2400 (default), 4800, or 9600 BAUD. Use the up or down arrows to change the BAUD

rate value.

4800 b Newbaudrate

Press “SET” to accept the new setting or “EXIT” to abort the operation and skip to the

next parameter in the menu.

Sample Period6.11.2

The sample period is the next parameter in the serial interface parameter menu. The

sample period is the time period in seconds between temperature measurements trans-

mitted from the serial interface. If the sample rate is set to 5, the instrument transmits

the current measurement over the serial interface approximately every ve seconds.

The automatic sampling is disabled with a sample period of 0. The sample period is

indicated by,

SPEr Flashesforonesecondandthentheserialsampleperiod

setting is displayed

1 Current sample period (seconds)

Adjust the value by using the up or down arrows (u d).

60 New sample period

Press “SET” to accept the new setting or “EXIT” to abort the operation and skip to the

next parameter in the menu.

Duplex Mode6.11.3

The next parameter is the duplex mode. The duplex mode may be set to full duplex or

half duplex. With full duplex any commands received by the calibrator via the serial

interface are immediately echoed or transmitted back to the device of origin. With half

duplex the commands are executed but not echoed. The duplex mode parameter is

indicated by,

dUPL Flashesforonesecondandthentheserialduplexmode

setting is displayed

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Controller Operation

Calibration Parameters

FULL Currentduplexmodesetting

The mode may be changed using the up or down arrows (u d).

HALF Newduplexmodesetting

Press “SET” to accept the new setting or “EXIT” to abort the operation and skip to the

next parameter in the menu.

Linefeed6.11.4

The nal parameter in the serial interface menu is the linefeed mode. This parameter

enables (on) or disables (off) transmission of a linefeed character (LF, ASCII 10) after

transmission of any carriage-return. The linefeed parameter is indicated by,

LF Flashesforonesecondandthentheseriallinefeedsetting

is displayed

On Currentlinefeedsetting

The mode may be changed using the up or down arrows (u d).

OFF Newlinefeedsetting

Press “SET” to accept the new setting or “EXIT” to abort the operation and skip to the

next parameter in the menu.

6.12 Calibration Parameters

The operator of the instrument controller has access to a number of the calibration

constants: R0, ALPHA, and DELTA. These values are set at the factory and must

not be altered. The correct values are important to the accuracy and proper and safe

operation of the instrument. Access to these parameters is available to the user so that

in the event that the controller memory fails the user may restore these values to the

factory settings. The user should have a list of these constants and their settings with

the instrument manual.

CAUTION: DO NOT change the values of the instrument calibration constants

from the factory set values. The correct setting of these parameters is important

to the safety, proper operation, and performance of the instrument.

The calibration parameters menu is indicated by,

CAL Calibrationparametersmenu

Press “SET” ve times to enter the menu. The calibration parameters menu con-

tains the parameters, Hard Cutout, R0, ALPHA, and DELTA, which characterize the

resistance-temperature relationship of the platinum control sensor. These parameters

may be adjusted to improve the accuracy of the calibrator.

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The calibration parameters are accessed by pressing “SET” after the name of the pa-

rameter is displayed. The value of the parameter may be changed using the up or down

arrow. After the desired value is reached, press “SET” to set the parameter to the new

value. Pressing “EXIT” causes the parameter to be skipped ignoring any changes that

may have been made.

R06.12.1

This probe parameter refers to the resistance of the control probe at 0°C. The value of

this parameter is set at the factory for best instrument accuracy. The value ranges from

95 to 105. For values greater than 100.000, the display does not show the hundreds

placement. For values less than 100.000, the display shows the entire value. The R0

parameter is indicated by,

r0 FlashesforonesecondandthentheR0settingisdisplayed

00.014 Current R0 setting (100.014)

To change the R0 setting, press the up or down arrows.

99.999 New R0 setting

To accept the new setting, press “SET”. Press “EXIT” to continue without storing the

new value.

 AcceptthenewR0setting

ALPHA6.12.2

This probe parameter refers to the average sensitivity of the probe between 0 and

100°C. The value of this parameter is set at the factory for best instrument accuracy.

aLpha FlashesforonesecondandthentheALPHAsettingis

displayed

38530 CurrentALPHAsetting

To change the ALPHA setting, press the up or down arrows.

38600 NewALPHAsetting

To accept the new setting, press “SET”. Press “EXIT” to continue without storing the

new value.

 AcceptthenewALPHAsetting

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DELTA6.12.3

This probe parameter characterizes the curvature of the resistance-temperature rela-

tionship of the sensor. The value of this parameter is set at the factory for best instru-

ment accuracy.

DeLta FlashesforonesecondandthentheDELTAsettingis

displayed

0.0000 CurrentDELTAsetting

To change the DELTA setting, press the up or down arrows.

0.1000 NewDELTAsetting

To accept the new setting, press “SET”. Press “EXIT” to continue without storing the

new value.

 AcceptthenewDELTAsetting

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Digital Communication Interface

RS-232 Connection

Digital Communication Interface7

This instrument is capable of communicating with and being controlled by other

equipment through the digital serial interface.

With a digital interface, the instrument may be connected to a computer or other

equipment. This allows the user to set the set-point temperature, monitor the tempera-

ture, and access any of the other controller functions, all using remote communications

equipment. Communications commands are summarized in Table 4 on next page.

RS-232 Connection7.1

The three-conductor jack for the serial port is located on the back of the instrument.

One serial cable is included. Additional or longer cables, of three meters or less, can

be constructed by following the wiring diagram shown in Figure 5 on this page. Note:

The TxD line on one side connects to the RxD line on the other and vice-versa. To

reduce the possibility of electrical interference, the serial cable should be shielded with

low resistance between the connector and the shield and should not be much longer

than is necessary. The protocol for serial communications is 8 data bits, 1 stop bit, and

no parity. Use no ow control. Set the linefeed to ON (all carriage returns are followed

by a linefeed (LF, ASCII 10)), and the duplex to HALF, disabling echo.

Figure 5

RxD

TxD

GND

RxD

TxD

GND

Serial Cable Wiring

The serial port can be used to transmit measurements to a computer or printer or to

change settings of the instrument from a computer. A full list of commands follows in

Section 7.2, Interface Commands, on page 32.

Commands sent to the instrument must end with an EOS character which is a carriage

return (CR, ASCII 13) or linefeed character (LF, ASCII 10). Commands can be sent

with upper or lower case letters. Data returned from the instrument end with a carriage

return. If the linefeed setting is on, a linefeed is also sent after the carriage return.

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9102S Dry-Well Calibrator

Interface Commands

7.2 Interface Commands

The various commands for accessing the calibrator functions via the digital interface

are listed in this section (see Table 4 on this page). These commands are used with the

RS-232 serial interface. The commands are terminated with a carriage-return character

(CR, ASCII 13). The interface makes no distinction between upper and lower case

letters, hence either may be used. Commands may be abbreviated to the minimum

number of letters which determines a unique command. A command may be used to

either set a parameter or display a parameter depending on whether or not a value is

sent with the command following a “=” character. For example “s” returns the current

set-point and “s=120.0” sets the set-point to 120.0 degrees.

In the following list of commands, characters or data within brackets, “[” and “]”, are

optional for the command. A slash, “/”, denotes alternate characters or data. Numeric

data, denoted by “n”, may be entered in decimal or exponential notation. Characters

are shown in lower case although upper case may be used. Spaces may be added

within command strings and will simply be ignored. Backspace (BS, ASCII 8) may be

used to erase the previous character. A terminating carriage return (CR, ASCII 13) is

implied with all commands.

Table 4 Controller communications commands

Command Description

Command

Format

Command

Example

Returned

Example

Acceptable

Values

Display Temperature

Read current set-point s[etpoint] s set: 999.99 {C

or F}

set: 75.00 C

Set current set-point to n s[etpoint]=n

t[emperature]=n

s=100

t=100

–10 to 122°C

14 to 252°F

Read temperature t[emperature] t t: 999.9 {C or F} t: 55.6 C

Read temperature units u[nits] u u: x u: C

Set temperature units: u[nits]=c/f C or F

Set temperature units to Celsius u[nits]=c u=c

Set temperature units to

Fahrenheit

u[nits]=f u=f

Read scan mode sc[an] sc sc: {ON or OFF} sc: ON

Set scan mode sc[an]=on/off sc=on ON or OFF

Read scan rate sr[ate] sr srat: 99.9 {C or

F}/min

srat:12.4 C/min

Set scan rate sr[ate]=n sr=1.1 0.1 to 99.9°C

0.2 to 179.8°F

Secondary Menu

Read proportional band setting pr[op-band] pr pb: 999.99999 pb: 15.9

Set proportional band to n pr[op-band]=n pr=8.83 0.1 to 30°C

0.2 to 54°F

Read heater power (duty cycle) po[wer] po po: 999.9 po: 6.5

Conguration Menu

Operating Parameters Menu

Read High Limit hl[imit] hl hl: 9999 hl: 125

Set High Limit hl[imit]=n hl=100 50 to 125°C

122 to 257°F

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Digital Communication Interface

Interface Commands

Command Description

Command

Format

Command

Example

Returned

Example

Acceptable

Values

Serial Interface Menu

Read serial sample setting sa[mple] sa sa: 99999 sa: 1

Set serial sampling setting to n seconds sa[mple]=n sa=0 0 to 10,000

Set serial duplex mode: du[plex]=f[ull]/

h[alf]

FULL or HALF

Set serial duplex mode to full du[plex]=f[ull] du=f

Set serial duplex mode to half du[plex]=h[alf] du=h

Set serial linefeed mode: lf[eed]=on/of[f] ON or OFF

Set serial linefeed mode to on lf[eed]=on lf=on

Set serial linefeed mode to off lf[eed]=of[f] lf=of

Calibration Menu

Read R0 calibration parameter r[0] r r0: 999.999 r0: 100.7

Set R0 calibration parameter to n r[0]=n r=100.7 95.0 to 105.0

Read ALPHA calibration parameter al[pha] al al: 9.99999999 al: 0.003865

Set ALPHA calibration parameter to n al[pha]=n al=0.003865 0.002 to 0.006

Read DELTA calibration parameter de[lta] de de: 1.50

Set DELTA calibration parameter de[lta]=n de=1.37 de: 9.99999 0.0–3.0

Miscellaneous Other Commands

Read rmware version number *ver[sion] *ver ver.9999x,9.99 ver.9102S,1.10

Read structure of all commands h[elp] h list of

commands

Read ALL operating parameters all all list of

parameters

Read set-point *sr *sr 999.999 ohms 100.123 ohms

Legend: [] Optional command data

{} Returns either information

n Numeric data supplied by user

9 Numeric data returned to user

x Character data returned to user

Note: When DUPLEX is set to FULL and a command is sent to READ, the command is returned

followed by a carriage return and linefeed. Then the value is returned as indicated in the

RETURNED column.

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Test Probe Calibration

Dry-well Characteristics

Test Probe Calibration8

For optimum accuracy and stability, allow the calibrator to warm up for 10 minutes

after power-up and then allow adequate stabilization time after reaching the set-point

temperature. After completing operation of the calibrator, allow the well to cool by set-

ting the temperature to 25°C for one-half hour before switching the power off.

Calibrating a Single Probe8.1

Insert the probe to be calibrated into the well of the instrument. The probe should

t snugly into the calibrator probe sleeve yet should not be so tight that it cannot be

easily removed. Avoid any dirt or grit that may cause the probe to jam into the sleeve.

Best results are obtained with the probe inserted to the full depth of the well. Once the

probe is inserted into the well, allow adequate stabilization time to allow the test probe

temperature to settle as described above. Once the probe has settled to the temperature

of the well, it may be compared to the calibrator display temperature. The display

temperature should be stable to within ±0.05°C degree for best results.

CAUTION: Never allow foreign material into the wells of the block. Fluids and

other materials can damage the instrument causing binding and damage to your

probe.

Dry-well Characteristics8.2

There is a temperature gradient vertically in the test well. The heater has been applied

to the block in such a way as to compensate for nominal heat losses out of the top of

the dry-well. However, actual heat losses vary with design of the thermometer probes

inserted into the calibrator and the temperature. For best results, insert probe to full

depth of well.

Stabilization and Accuracy 8.2.1

The stabilization time of the instrument depends on the conditions and temperatures

involved. Typically, the test well stabilizes to ±0.05°C within 7 minutes of reaching

the set-point temperature as indicated by the display. Ultimate stability is achieved 10

to 20 minutes after reaching the set temperature.

Depending on the magnitude of the disturbance and the required accuracy, inserting

a cold probe into a warm well will require another stabilization period. For example,

inserting a 0.25 inch diameter room temperature probe into a sleeve at 120°C takes 7

minutes to be within ±0.05°C of its settled point and might take 15 minutes to achieve

maximum stability.

Speeding up the calibration process can be accomplished by knowing how soon to

make the measurement. It is recommended that typical measurements be made at the

desired temperatures with the desired test probes to establish these times.

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Calibration Procedure

Calibration Procedure9

Note: This procedure is to be considered a general guideline. Each laboratory

should write their own procedure based on their equipment and their quality

program. Each procedure should be accompanied by an uncertainty analysis

also based on the laboratory’s equipment and environment.

Sometimes the user may want to calibrate the dry-well to improve the temperature

set-point accuracy. Calibration is done by adjusting the controller probe calibra-

tion constants R0 , ALPHA, and DELTA so that the temperature of the dry-well as

measured with a standard thermometer agrees more closely with the set-point. The

thermometer used must be able to measure the well temperature with higher accuracy

than the desired accuracy of the dry-well. By using a good thermometer and following

this procedure the dry-well can be calibrated to an accuracy of better than 0.25°C over

its full range.

Calibration Points9.1

In calibrating the dry-well, R0, ALPHA, and DELTA are adjusted to minimize the

set-point error at each of three different dry-well temperatures. Any three reasonably

separated temperatures may be used for the calibration. Improved results can be ob-

tained for shorter ranges when using temperatures that are just within the most useful

operating range of the dry-well. The farther apart the calibration temperatures, the

greater the calibrated temperature range. However, the calibration error is also greater

over the range. For instance, if 10°C to 100°C is chosen as the calibration range, the

calibrator may achieve an accuracy of ±0.25°C over the range 10°C to 100°C. Choos-

ing a range of 50°C to 100°C may allow the calibrator to have a better accuracy of

maybe ±0.2°C over the range 75°C to 105°C but outside that range the accuracy may

be only ±0.25°C.

Calibration Procedure9.2

Choose three set-points to use in the calibration of the R0, ALPHA, and DELTA 1.

parameters. These set points are generally 2°C, 50°C, and 100°C but other set

points may be used if desired or necessary.

Set the dry-well to the lowest set-point. When the dry-well reaches the set-point 2.

and the display is stable, wait 15 minutes or so and then take a reading from

the thermometer. Sample the set-point resistance by holding down “SET” and

pressing the d. Write these values down as T

and R

respectively.

Repeat step 2 for the other two set-points recording them as T3.

and R

and T

and R

respectively.

Using the recorded data, calculate new values for the R0, ALPHA, and DELTA.4.

Compute DELTA9.2.1

AT T=−

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9102S Dry-Well Calibrator

Calibration Procedure

BT T=−













−













−













−













100

100 100

100

TTTT













−













−













−













2211

100

100 100

100

ERT=−

FRT=−

delta

AF BE

DE CF

−

1-3

- Measured temperature using thermometer.

1-3

- Value of set-point resistance from the instrument display. (Press “SET” and d at

the same time.)

where

and R

are the measured temperature and set-point resistance at 2.0 °C

and R

are the measured temperature and set-point resistance at 50.0 °C

and R

are the measured temperature and set-point resistance at 100.0 °C

Compute R0 and ALPHA9.2.2

aTdelta

100













−













aTdelta

100













−













rzero

Ra Ra

−

31 13

alpha

Ra Ra

−

31 13

delta is the new value of DELTA computed above

Program the new values for DELTA (delta), R0 (rzero), and ALPHA (alpha) into the

dry-well using the following steps.

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Calibration Procedure

Press “SET” and “EXIT” at the same time. Press “SET” until 5. PAR is displayed.

and then press u until CAL is displayed.

Press “SET” ﬁve times to enter the menu.6.

Press “SET” and 7. u or d until the correct numerical setting is displayed. Press

“SET” to accept the new value.

Repeat step 3. for ALPHA and DELTA.8.

Press “EXIT” to show the displayed temperature.9.

Accuracy and Repeatability9.2.3

Check the accuracy of the dry-well at various points over the calibration range. If dry-

well does not pass specication at all set-points, repeat the Calibration Procedure.

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Maintenance

Maintenance10

This instrument has been designed with the utmost care. Ease of operation

●●

and simplicity of maintenance have been a central theme in the product

development. Therefore, with proper care the instrument should require very

little maintenance. Avoid operating the instrument in an oily, wet, dirty, or dusty

environment.

If the outside of the instrument becomes soiled, it may be wiped clean with

●●

a damp cloth and mild detergent. Do not use harsh chemicals on the surface

which may damage the paint.

It is important to keep the well of the calibrator clean and clear of any foreign

●●

matter. Do not use uid to clean out the well.

Use a commercially available plastic or felt brush, of appropriate diameter for

●●

a tight t without any uid, to clean the well. Complete the cleaning process by

using cotton swabs and air to remove any debris.

Inserts should be cleaned periodically. For cold dry-wells operating below 0°C,

●●

you should always clean the inserts after operating the unit at or below 0°C.

Use emery cloth or other similar material to clean the outside of the inserts.

Ensure that the inserts are wiped clean of any debris loosened in the bufng

process. Periodic cleaning of the outside of the inserts ensures easy insertion

and removal of the inserts from the well.

The dry-well calibrator should be handled with care. Avoid knocking or

●●

dropping the calibrator.

Do not drop the probe stems into the well. This type of action can cause a shock

●●

to the sensor.

If a hazardous material is spilt on or inside the equipment, the user is

●●

responsible for taking the appropriate decontamination steps as outlined by the

national safety council with respect to the material.

If the mains supply cord becomes damaged, replace it with a cord with the

●●

appropriate gauge wire for the current of the instrument. If there are any

questions, call an Authorized Service Center (see Section 1.4, Authorized

Service Centers, on page 6) for more information.

Before using any cleaning or decontamination method except those

●●

recommended by Fluke, users should check with an Authorized Service Center

to be sure that the proposed method will not damage the equipment.

If the instrument is used in a manner not in accordance with the equipment

●●

design, the operation of the dry-well may be impaired or safety hazards may

arise.

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Troubleshooting

Troubleshooting Problems, Possible Causes, and Solutions

Troubleshooting11

This section contains information on troubleshooting, CE Comments, and a wiring

diagram.

Troubleshooting Problems, Possible Causes, and Solutions11.1

In the event that the instrument appears to function abnormally, this section may help

to nd and solve the problem. Several possible problem conditions are described along

with likely causes and solutions. If a problem arises, please read this section carefully

and attempt to understand and solve the problem. If the problem cannot otherwise be

solved, contact an Authorized Service Center (see Section 1.4, Authorized Service

Centers, on page 6) for assistance. Be sure to have the model number, serial number,

voltage, and problem description available.

Problem Possible Causes and Solutions

Incorrect

temperature reading

Incorrect R0, ALPHA, and DELTA parameters. Find the value for R0, ALPHA,

and DELTA on the Report of Calibration. Reprogram the parameters into the

instrument (see Section , Calibration Parameters). Allow the instrument to

stabilize and verify the accuracy of the temperature reading.

Controller locked up. The controller may have locked up due to a power surge or

other aberration. Initialize the system by performing the Factory Reset Sequence.

Factory Reset Sequence. Hold the SET and EXIT buttons down at the same time

while powering up the instrument. The instrument displays shows ‘-init-‘, the

model number, and the rmware version. Each of the controller parameters and

calibration constants must be reprogrammed. The values can be found on the

Report of Calibration (see Section 6.12, Calibration Parameters, on page 27).

The instrument

heats or cools too

quickly or too slowly

Incorrect scan and scan rate settings. The scan and scan rate settings may be set

to unwanted values. Check the Scan and Scan Rate settings. The scan may be

off (if the unit seems to be responding too quickly). The scan may be on with the

Scan Rate set low (if unit seems to be responding too slowly).

Improper line voltage. Verify that the voltage reading in the bottom of the unit

matches the source voltage.

Unstable display Wait. Allow the instrument to stabilize for a few minutes.

Proportional band may be incorrect. Refer to the proportional band on the Report

of Calibration.

The display shows

an error code

Controller problem. The error messages signify the following problems with the

controller.

Err 1 - a RAM error

Err 2 - a NVRAM error

Err 3 - a Structure error

Err 4 - an ADC setup error

Err 5 - an ADC ready error

Err 6 – a defective control sensor

Err 7 – a heater error

Initialize the system by performing the Factory Reset Sequence describe above.

Temperature cannot

be set above a

certain point

Incorrect High Limit parameter. The High Limit parameter may be set below 125°C.

Check this value as described in Section 6.9, Operating Parameters, on page 25.

Display is reading

incorrectly

The instrument was turned off at high temperatures and reenergized too quickly.

Turn the instrument off until the display is completely off and then reenergize.

Display ickers

when the

instrument is turned

off

This is normal operation and is more prevalent at high temperatures due to

Seebeck Coefficient of the thermoelectric cooling devices. Some time is required

to fully discharge the switching power supply and to complete the power off cycle.

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9102S Dry-Well Calibrator

CE Comments

Problem Possible Causes and Solutions

The instrument

does not reach

temperature

The specications for the instrument include an ambient temperature of 23°C.

If the ambient temperature is above 23°C, the instrument may not be able to

reach the lowest specied temperature. Check the ambient temperature if the

instrument does not reach maximum temperature.

CE Comments11.2

EMC Directive11.2.1

Fluke’s equipment has been tested to meet the European Electromagnetic Compatibil-

ity Directive (EMC Directive, 89/336/EEC). The Declaration of Conformity for your

instrument lists the specic standards to which the unit was tested.

Low Voltage Directive (Safety)11.2.2

In order to comply with the European Low Voltage Directive (73/23/EEC), Fluke

equipment has been designed to meet the IEC 1010-1 (EN 61010-1) and the IEC

1010-2-010 (EN 61010-2-010) standards.

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725

Multifunction Process Calibrator

Users Manual

October, 1998 Rev.3, 5/04

All product names are trademarks of their respective companies.

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LIMITED WARRANTY AND LIMITATION OF LIABILITY

Each Fluke product is warranted to be free from defects in material and workmanship under normal use and service. The warranty period is three years and

begins on the date of shipment. Parts, product repairs, and services are warranted for 90 days. This warranty extends only to the original buyer or end-user

customer of a Fluke authorized reseller, and does not apply to fuses, disposable batteries, or to any product which, in Fluke’s opinion, has been misused, altered,

neglected, contaminated, or damaged by accident or abnormal conditions of operation or handling. Fluke warrants that software will operate substantially in

accordance with its functional specifications for 90 days and that it has been properly recorded on non-defective media. Fluke does not warrant that software will

be error free or operate without interruption.

Fluke authorized resellers shall extend this warranty on new and unused products to end-user customers only but have no authority to extend a greater or different

warranty on behalf of Fluke. Warranty support is available only if product is purchased through a Fluke authorized sales outlet or Buyer has paid the applicable

international price. Fluke reserves the right to invoice Buyer for importation costs of repair/replacement parts when product purchased in one country is submitted

for repair in another country.

Fluke’s warranty obligation is limited, at Fluke’s option, to refund of the purchase price, free of charge repair, or replacement of a defective product which is

returned to a Fluke authorized service center within the warranty period.

To obtain warranty service, contact your nearest Fluke authorized service center to obtain return authorization information, then send the product to that service

center, with a description of the difficulty, postage and insurance prepaid (FOB Destination). Fluke assumes no risk for damage in transit. Following warranty

repair, the product will be returned to Buyer, transportation prepaid (FOB Destination). If Fluke determines that failure was caused by neglect, misuse,

contamination, alteration, accident, or abnormal condition of operation or handling, including overvoltage failures caused by use outside the product’s specified

rating, or normal wear and tear of mechanical components, Fluke will provide an estimate of repair costs and obtain authorization before commencing the work.

Following repair, the product will be returned to the Buyer transportation prepaid and the Buyer will be billed for the repair and return transportation charges (FOB

Shipping Point).

THIS WARRANTY IS BUYER'S SOLE AND EXCLUSIVE REMEDY AND IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT

NOT LIMITED TO ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. FLUKE SHALL NOT BE LIABLE FOR

ANY SPECIAL, INDIRECT, INCIDENTAL OR CONSEQUENTIAL DAMAGES OR LOSSES, INCLUDING LOSS OF DATA, ARISING FROM ANY CAUSE OR

THEORY.

Since some countries or states do not allow limitation of the term of an implied warranty, or exclusion or limitation of incidental or consequential damages, the

limitations and exclusions of this warranty may not apply to every buyer. If any provision of this Warranty is held invalid or unenforceable by a court or other

decision-maker of competent jurisdiction, such holding will not affect the validity or enforceability of any other provision.

Fluke Corporation

P.O. Box 9090

Everett, WA 98206-9090

U.S.A.

Fluke Europe B.V.

P.O. Box 1186

5602 BD Eindhoven

The Netherlands

11/99

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Table of Contents

Title Page

Introduction....................................................................................................................1

Contacting Fluke............................................................................................................ 1

Standard Equipment...................................................................................................... 3

Safety Information.......................................................................................................... 3

Getting Acquainted with the Calibrator .......................................................................... 8

Input and Output Terminals ...................................................................................... 8

Keys.......................................................................................................................... 10

Display ...................................................................................................................... 13

Getting Started .............................................................................................................. 14

Shut Down Mode ........................................................................................................... 14

Contrast Adjustment ...................................................................................................... 16

Using Measure Mode..................................................................................................... 17

Measuring Electrical Parameters (Upper Display) .................................................... 17

Current Measurement with Loop Power.................................................................... 17

Measuring Electrical Parameters (Lower Display) .................................................... 19

Measuring Temperature............................................................................................ 20

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725

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Using Thermocouples........................................................................................... 20

Using Resistance-Temperature Detectors (RTDs) ............................................... 23

Measuring Pressure .................................................................................................. 26

Zeroing with Absolute Pressure Modules.................................................................. 27

Using Source Mode........................................................................................................ 29

Sourcing 4 to 20 mA.................................................................................................. 29

Simulating a 4- to 20-mA Transmitter........................................................................ 29

Sourcing Other Electrical Parameters ....................................................................... 29

Simulating Thermocouples........................................................................................ 32

Simulating RTDs........................................................................................................ 32

Sourcing Pressure..................................................................................................... 35

Setting 0 % and 100 % Output Parameters ................................................................... 37

Stepping and Ramping the Output................................................................................. 37

Manually Stepping the mA Output............................................................................. 37

Auto Ramping the Output.......................................................................................... 38

Storing and Recalling Setups......................................................................................... 38

Calibrating a Transmitter................................................................................................ 39

Calibrating a Pressure Transmitter................................................................................. 41

Calibrating an I/P Device................................................................................................ 43

Testing an Output Device............................................................................................... 45

Remote Control Commands........................................................................................... 46

Replacing the Batteries.................................................................................................. 49

Replacing the Fuses ...................................................................................................... 49

Maintenance................................................................................................................... 50

Cleaning the Calibrator.............................................................................................. 50

Service Center Calibration or Repair......................................................................... 50

Replacement Parts.................................................................................................... 51

Accessories.................................................................................................................... 53

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Contents (continued)

iii

External Fluke Pressure Module Compatibility ......................................................... 53

Specifications................................................................................................................. 56

DC Voltage Measurement......................................................................................... 56

DC Voltage Source ................................................................................................... 56

Millivolt Measurement and Source*........................................................................... 56

DC mA Measurement and Source ............................................................................ 57

Ohms Measurement.................................................................................................. 57

Ohms Source ............................................................................................................ 57

Frequency Measurement.......................................................................................... 57

Frequency Source..................................................................................................... 58

Temperature, Thermocouples................................................................................... 58

Loop Power Supply................................................................................................... 59

RTD Excitation (simulation) ...................................................................................... 59

Temperature, RTD Ranges, and Accuracies (ITS-90).............................................. 59

Pressure Measurement............................................................................................. 60

General Specifications.............................................................................................. 60

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List of Tables

Table Title Page

1. Summary of Source and Measure Functions........................................................................ 2

2. International Symbols ........................................................................................................... 7

3. Input/Output Terminals and Connectors............................................................................... 9

4. Key Functions....................................................................................................................... 11

5. Thermocouple Types Accepted ............................................................................................ 21

6. RTD Types Accepted............................................................................................................24

7. mA Step Values.................................................................................................................... 38

8A. Remote Control Upper Display ............................................................................................. 46

8B. Remote Control Lower Display ............................................................................................. 46

8C. "S" Commands Select Sensor Type ..................................................................................... 48

9. Replacement Parts ............................................................................................................... 51

10. Fluke Pressure Module Compatibility ................................................................................... 53

11. Pressure Modules................................................................................................................. 54

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vii

List of Figures

Figure Title Page

1. Standard Equipment............................................................................................................. 6

2. Input/Output Terminals and Connectors............................................................................... 8

3. Keys...................................................................................................................................... 10

4. Elements of a Typical Display............................................................................................... 13

5. Voltage-to-Voltage Test........................................................................................................ 15

6. Adjusting the Contrast .......................................................................................................... 16

7. Measuring Voltage and Current Output ................................................................................ 17

8. Connections for Supplying Loop Power................................................................................ 18

9. Measuring Electrical Parameters.......................................................................................... 19

10. Measuring Temperature with a Thermocouple ..................................................................... 22

11. Measuring Temperature with an RTD, Measuring 2-, 3-, and 4-Wire Resistance ................ 25

12. Gage and Differential Pressure Modules.............................................................................. 26

13. Connections for Measuring Pressure.................................................................................... 28

14. Connections for Simulating a 4- to 20-mA Transmitter......................................................... 30

15. Electrical Sourcing Connections ........................................................................................... 31

16. Connections for Simulating a Thermocouple........................................................................ 33

17. Connection for Simulating a 3-Wire RTD.............................................................................. 34

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viii

18. Connections for Sourcing Pressure....................................................................................... 36

19. Calibrating a Thermocouple Transmitter ............................................................................... 40

20. Calibrating a Pressure-to-Current (P/I) Transmitter............................................................... 42

21. Calibrating a Current-to-Pressure (I/P) Transmitter............................................................... 44

22. Calibrating a Chart Recorder.................................................................................................45

23. Replacing the Battteries ........................................................................................................ 50

24. Replacement Parts................................................................................................................ 52

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Multifunction Process Calibrator

Introduction

Your Fluke 725 Multifunction Process Calibrator (referred

to as “the calibrator”) is a handheld, battery-operated

instrument that measures and sources electrical and

physical parameters. See Table 1.

In addition to the functions in Table 1, the calibrator has

the following features and functions:

• A split-screen display. The upper display allows you

to measure volts, current, and pressure only. The

lower display allows you to measure and source

volts, current, pressure, resistance temperature

detectors, thermocouples, frequency, and ohms.

• Calibrates a transmitter using the split-screen.

• A thermocouple (TC) input/output terminal and

internal isothermal block with automatic reference-

junction temperature compensation.

• Stores and recalls setups.

• Manual stepping and automatic stepping and

ramping.

• Controls the calibrator remotely from a PC running a

terminal emulator program.

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725

Users Manual

Table 1. Summary of Source and Measure Functions

Function Measure Source

dc V 0 V to 30 V 0 V to 10 V

dc mA 0 to 24 mA 0 to 24 mA

Frequency 1 CPM to 10 kHz 1 CPM to 10 kHz

Resistance 0 Ω to 3200 Ω 15 Ω to 3200 Ω

Thermocouple Types E, J, K, T, B, R, S, L, U, N, mV

RTD

(Resistance-

Temperature

Detector)

Pt100 Ω (385)

Pt100 Ω (3926)

Pt100 Ω (3916)

Pt200 Ω (385)

Pt500 Ω (385)

Pt1000 Ω (385)

Ni120

Pressure 27 modules ranging from 10 in. H

O to

10,000 psi

27 modules ranging from 10 in. H

O to

10,000 psi using an external pressure source

(hand pump)

Other functions Loop supply, Step, Ramp, Memory, Dual display

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Standard Equipment

The items listed below and shown in Figure 1 are included

with your calibrator. If the calibrator is damaged or

something is missing, contact the place of purchase

immediately. To order replacement parts or spares, see

the user-replaceable parts list in Table 9.

• TL75 test leads (one set)

• AC70A alligator clips (one set)

• Stackable alligator clip test leads (one set)

• 725 Product Overview Manual

• 725 CD-ROM (contains Users Manual)

• Spare fuse

Safety Information

The calibrator is designed in accordance with IEC1010-1,

ANSI/ISA S82.01-1994 and CAN/CSA C22.2 No. 1010.1-

92. Use the calibrator only as specified in this manual,

otherwise the protection provided by the calibrator may be

impaired.

A Warning identifies conditions and actions that pose

hazard(s) to the user; a Caution identifies conditions and

actions that may damage the calibrator or the equipment

under test.

International symbols used on the calibrator and in this

manual are explained in Table 2.

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725

Users Manual

W Warning

To avoid possible electric shock or personal injury:

• Do not apply more than the rated voltage, as marked on the calibrator, between the terminals, or

between any terminal and earth ground (30 V 24 mA max all terminals).

• Before each use, verify the calibrator’s operation by measuring a known voltage.

• Follow all equipment safety procedures.

• Never touch the probe to a voltage source when the test leads are plugged into the current terminals.

• Do not use the calibrator if it is damaged. Before you use the calibrator, inspect the case. Look for

cracks or missing plastic. Pay particular attention to the insulation surrounding the connectors.

• Select the proper function and range for your measurement.

• Make sure the battery door is closed and latched before you operate the calibrator.

• Remove test leads from the calibrator before you open the battery door.

• Inspect the test leads for damaged insulation or exposed metal. Check test leads continuity. Replace

damaged test leads before you use the calibrator.

• When using the probes, keep your fingers away from the probe contacts. Keep your fingers behind the

finger guards on the probes.

• Connect the common test lead before you connect the live test lead. When you disconnect test leads,

disconnect the live test lead first.

• Do not use the calibrator if it operates abnormally. Protection may be impaired. When in doubt, have the

calibrator serviced.

• Do not operate the calibrator around explosive gas, vapor, or dust.

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Safety Information

W Warning

• When using a pressure module, make sure the process pressure line is shut off and depressurized

before you connect it or disconnect it from the pressure module.

• Use only 4 AA batteries, properly installed in the calibrator case, to power the calibrator.

• Disconnect test leads before changing to another measure or source function.

• When servicing the calibrator, use only specified replacement parts.

• To avoid false readings, which could lead to possible electric shock or personal injury, replace the

battery as soon as the battery indicator (M) appears.

Caution

To avoid possible damage to calibrator or to equipment under test:

• Disconnect the power and discharge all high-voltage capacitors before testing resistance or continuity.

• Use the proper jacks, function, and range for your measurement or sourcing application.

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725

Users Manual

100%

25%

RECALL

STORE

SETUP

Stackable

Test Leads

TL75

Test Lead Set

AC72

Alligator Clips

MEASURE

SOURCE / M

EASURE

30V MAX ALL TERMINALS

RTD

COM

LOOP

sh01f.eps

Figure 1. Standard Equipment

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Safety Information

Table 2. International Symbols

AC - Alternating current Double insulated

DC - Direct current Battery

Earth ground Refer to the manual for information about

this feature.

Pressure

ON/OFF

Conforms to Canadian Standards

Association directives

Conforms to European Union directives

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725

Users Manual

Getting Acquainted with the Calibrator

Input and Output Terminals

Figure 2 shows the calibrator input and output terminals.

Table 3 explains their use.

V mA

LOO P

V mA

TC RTD

100%

25%

RECALL

ZERO

MEAS

SOURCE

STORE

SETUP

MULTIFUNCTION CALIBRATOR

725

sh05f.eps

Figure 2. Input/Output Terminals and Connectors

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Getting Acquainted with the Calibrator

Table 3. Input/Output Terminals and Connectors

No Name Description

Pressure module

connector

Connects the calibrator to a pressure module or the calibrator to a PC for a remote

control connection.

B, C

MEASURE V, mA

terminals

Input terminals for measuring voltage, current, and supplying loop power.

TC input/output Terminal for measuring or simulating thermocouples. This terminal accepts a miniature

polarized thermocouple plug with flat, in-line blades spaced 7.9 mm (0.312 in) center to

center.

E, F

SOURCE/ MEASURE

V, RTD, Hz, Ω

terminals

Terminals for sourcing or measuring voltage, resistance, frequency, and RTDs.

G, H

SOURCE/ MEASURE

mA terminals, 3W, 4W

Terminals for sourcing and measuring current, and performing 3W and 4W RTD

measurements.

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Users Manual

Keys

Figure 3 shows the calibrator keys and Table 4 explains

their use.

V mA

LOO P

V mA

TC RTD

100%

25%

RECALL

ZERO

MEAS

SOURCE

STORE

SETUP

MULTIFUNCTION CALIBRATOR

725

V mA

LOO P

V mA

TC RTD

100%

25%

RECALL

ZERO

MEAS

SOURCE

STORE

SETUP

MULTIFUNCTION CALIBRATOR

725

MEASURE

SOURCE / MEASURE

30V MAX ALL TERMINALS

RTD

COM COM

LOOP

MEASURE

SOURCE / MEASURE

30V MAX ALL TERMINALS

RTD

COM COM

LOOP

sh41f.eps

Figure 3. Keys

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Getting Acquainted with the Calibrator

Table 4. Key Functions

No Name Description

A O Turns the power on or off.

B l Selects voltage, mA or Loop Power measurement function in the upper display.

C A Selects the pressure measurement function in the upper display. Repeated pushes cycle

through the different pressure units.

D K Zeros the pressure module reading. This applies to both upper and lower displays.

E C Turns backlight on or off. Turns Contrast Adjust mode on when powering up.

F F Toggles frequency and ohms measurement and sourcing functions.

G D Toggles between Centigrade or Fahrenheit when in TC or RTD functions.

H G Recalls from memory a source value corresponding to 100 % of span and sets it as the

source value. Press and hold to store the source value as the 100 % value.

I H Increments output by 25 % of span.

J I Decrements output by 25 % of span.

K J Recalls from memory a source value corresponding to 0 % of span and sets it as the

source value. Press and hold to store the source value as the 0 % value.

Identifies Firmware version. Press and hold J when powering up.

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Users Manual

Table 4. Key Functions (cont.)

No Name Description

L L

Cycles through :

Slow repeating 0 % - 100 % - 0 % ramp

Fast repeating 0 % - 100 % - 0 % ramp

Repeating 0 % - 100 % - 0 % ramp in 25 % steps

Disables Shut Down Mode

Enables Shut Down Mode

M XW

Y Z

Increases or decreases the source level.

Cycles through the 2-, 3-, and 4-wire selections.

Moves through the memory locations of calibrator setups.

In Contrast Adjustment mode; up-darkens contrast, down-lightens contrast.

N Q

Retrieves a previous calibrator setup from a memory location.

O S

Saves the calibrator setup. Saves Contrast Adjust setup.

Cycles the calibrator through MEASURE and SOURCE modes in the lower display.

Q T

Selects TC (thermocouple) measurement and sourcing function in the lower display. Repeated pushes cycle through

the thermocouple types.

R V

Toggles between voltage, mA sourcing, or mA simulate functions in the lower display.

S R

Selects RTD (resistance temperature detector) measurement and sourcing function in lower display. Repeated pushes

cycle through the RTD types.

T U

Selects the pressure measurement and sourcing function. Repeated pushes cycle through the different pressure units.

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Getting Acquainted with the Calibrator

Display

Figure 4 shows the elements of a typical display.

Low Battery

Symbol

Loop

Annunciator

Memory Locations

for Calibrator Setups

Units

Display

Auto

Ramp

Mode

Indicator

sh07f.eps

Figure 4. Elements of a Typical Display

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725

Users Manual

Getting Started

This section acquaints you with some basic operations of

the calibrator.

Proceed as follows to perform a voltage-to-voltage test:

1. Connect the calibrator’s voltage output to its voltage

input as shown in Figure 5.

2. Press O to turn on the calibrator. Press l to

select dc voltage (upper display).

3. If necessary, press M for SOURCE mode (lower

display). The calibrator is still measuring dc voltage,

and you can see the active measurements in the

upper display.

4. Press

V to select dc voltage sourcing.

5. Press

Y and Z to select a digit to change. Press X

to select 1 V for the output value. Press and hold

J to enter 1 V as the 0 % value.

6. Press

X to increase the output to 5 V. Press and

hold

G to enter 5 V as the 100 % value.

7. Press H and I to step between 0 and 100 %

in 25 % step increments.

Shut Down Mode

The calibrator comes with the Shut Down mode

enabled for a time duration set to 30 minutes

(displayed for about 1 second when the calibrator is

initially turned on). When the Shut Down mode is

enabled, the calibrator will automatically shut down

after the time duration has elapsed from the time the

last key was pressed. To disable the Shut Down

mode, press O and Y simultaneously. To enable the

mode, press O and Z simultaneously. To adjust the

time duration, press O and Z simultaneously, then

press X and/or W to adjust the time between 1 and

30 minutes.

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Shut Down Mode

V mA

LOOP

V mA

RTD

100%

25%

RECALL

ZERO

MEAS

SOURCE

STORE

SETUP

MULTIFUNCTION CALIBRATOR

725

sh39f.eps

Figure 5. Voltage-to-Voltage Test

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725

Users Manual

Contrast Adjustment

Note

Available with V2.1 Firmware or greater. To

identify firmware version, press and hold J

when powering up. The firmware version will be

shown in the upper units display for about 1

second after initialization.

To adjust the contrast, proceed as follows:

1. Press C and O until Contst Adjust is displayed as

shown in Figure 6.

2. Press and hold X to darken contrast.

3. Press and hold W to lighten contrast.

4. Press S to save the contrast level.

V mA

LOO P

V mA

TC RTD

100%

25%

RECALL

ZERO

MEAS

SOURCE

STORE

SETUP

MULTIFUNCTION CALIBRATOR

725

sh06f.eps

Figure 6. Adjusting the Contrast

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Using Measure Mode

Measuring Electrical Parameters (Upper Display)

To measure the current or voltage output of a transmitter,

or to measure the output of a pressure instrument, use the

upper display and proceed as follows:

1. Press

l to select volts or current. LOOP should

not be on.

2. Connect the leads as shown in Figure 7.

Current Measurement with Loop Power

The loop power function activates a 24 V supply in series

with the current measuring circuit, allowing you to test a

transmitter when it is disconnected from plant wiring. To

measure current with loop power, proceed as follows:

1. Connect the calibrator to the transmitter current loop

terminals as shown in Figure 8.

2. Press

l while the calibrator is in current

measurement mode. LOOP appears and an internal

24 V loop supply turns on.

V mA

LOO P

V mA

TC RTD

100%

25%

RECALL

ZERO

MEAS

SOURCE

STORE

SETUP

MULTIFUNCTION CALIBRATOR

725

Black

Red

sh42f.eps

Figure 7. Measuring Voltage and Current Output

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725

Users Manual

Red

TEST DC PWR

+–+–

–+

Black

V mA

LOO P

V mA

TC RTD

100%

25%

RECALL

ZERO

MEAS

SOURCE

STORE

SETUP

MULTIFUNCTION CALIBRATOR

725

sh18f.eps

Figure 8. Connections for Supplying Loop Power

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Using Measure Mode

Measuring Electrical Parameters (Lower Display)

To measure the electrical parameters using the lower

display, proceed as follows:

1. Connect the calibrator as shown in Figure 9.

2. If necessary, press

M for MEASURE mode (lower

display)

3. Press

V for dc voltage or current, or F for

frequency or resistance.

V mA

LOO P

V mA

TC RTD

100%

25%

RECALL

ZERO

MEAS

SOURCE

STORE

SETUP

MULTIFUNCTION CALIBRATOR

725

sh43f.eps

Figure 9. Measuring Electrical Parameters

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725

Users Manual

Measuring Temperature

Using Thermocouples

The calibrator supports ten standard thermocouples,

including type E, N, J, K, T, B, R, S, L, or U. Table 5

summarizes the ranges and characteristics of the

supported thermocouples.

To measure temperature using a thermocouple, proceed

as follows:

1. Attach the thermocouple leads to the appropriate TC

miniplug, then to the TC input/output as shown in

Figure 10. One pin is wider than the other. Do not try

to force a miniplug in the wrong polarization.

Note

If the calibrator and the thermocouple plug are at

different temperatures, wait one minute or more

for the connector temperature to stabilize after

you plug the miniplug into the TC input/output.

2. If necessary, press

M for MEASURE mode.

3. Press T for the TC display. If desired, continue

pressing this key to select the desired thermocouple

type.

If necessary, you can toggle between °C or °F

temperature units by pressing

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Using Measure Mode

Table 5. Thermocouple Types Accepted

Type Positive Lead

Positive Lead (H)

Color Negative Lead Specified Range

Material

ANSI* IEC**

Material (°C)

E Chromel Purple Violet Constantan -200 to 950

N Ni-Cr-Si Orange Pink Ni-Si-Mg -200 to 1300

J Iron White Black Constantan -200 to 1200

K Chromel Yellow Green Alumel -200 to 1370

T Copper Blue Brown Constantan -200 to 400

B Platinum (30 % Rhodium) Gray Platinum (6 % Rhodium) 600 to 1800

R Platinum (13 % Rhodium) Black Orange Platinum -20 to 1750

S Platinum (10 % Rhodium) Black Orange Platinum -20 to 1750

L Iron Constantan -200 to 900

U Copper Constantan -200 to 400

*American National Standards Institute (ANSI) device negative lead (L) is always red.

**International Electrotechnical Commission (IEC) device negative lead (L) is always white.

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725

Users Manual

MEASURE

SOURCE / MEASURE

30V MAX ALL TERMINALS

RTD

COM COM

LOOP

Process Temperature

Warning

30 V maximum to

TC Miniplug

sh12f.eps

Figure 10. Measuring Temperature with a Thermocouple

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Using Measure Mode

Using Resistance-Temperature Detectors (RTDs)

The calibrator accepts RTD types shown in Table 6. RTDs

are characterized by their resistance at 0 °C (32 °F),

which is called the “ice point” or R

. The most common R

is 100 Ω. The calibrator accepts RTD measurement inputs

in two-, three-, or four-wire connections, with the

three-wire connection the most common. A four-wire

configuration provides the highest measurement

precision, and two-wire provides the lowest measurement

precision.

To measure temperature using an RTD input, proceed as

follows:

1. If necessary, press

M for MEASURE mode.

2. Press

R for the RTD display. If desired, continue

pressing this key to select the desired RTD type.

3. Press

X or W to select a 2-, 3-, or 4- wire

connection.

4. Attach the RTD to input terminals as shown in

Figure 11.

5. If necessary, you can toggle between °C or °F

temperature units by pressing

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725

Users Manual

Table 6. RTD Types Accepted

RTD Type Ice Point (R

) Material α Range (°C)

Pt100 (3926) 100 Ω Platinum 0.003926 Ω/°C -200 to 630

Pt100 (385) 100 Ω Platinum 0.00385 Ω/°C -200 to 800

Ni120 (672) 120 Ω Nickel 0.00672 Ω/°C -80 to 260

Pt200 (385) 200 Ω Platinum 0.00385 Ω/°C -200 to 630

Pt500 (385) 500 Ω Platinum 0.00385 Ω/°C -200 to 630

Pt1000 (385) 1000 Ω Platinum 0.00385 Ω/°C -200 to 630

Pt100 (3916) 100 Ω Platinum 0.003916 Ω/°C -200 to 630

The Pt100 commonly used in U.S. industrial applications is Pt100 (3916), α = 0.003916 Ω/°C. (Also designated as JIS

curve.) The IEC standard RTD is the Pt100 (385), α = 0.00385 Ω/°C.

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Using Measure Mode

RTD

Resistance

to be

measured

RTD

MEASURE

SOURCE / MEASURE

30V MAX ALL TERMINALS

RTD

COM COM

LOOP

MEASURE

SOURCE / MEASURE

30V MAX ALL TERMINALS

RTD

COM COM

LOOP

MEASURE

SOURCE / MEASURE

30V MAX ALL TERMINALS

RTD

COM COM

LOOP

sh15f.eps

Figure 11. Measuring Temperature with an RTD, Measuring 2-, 3-, and 4-Wire Resistance

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725

Users Manual

Measuring Pressure

Many ranges and types of pressure modules are available

from Fluke. See “Accessories” near the back of this

manual. Before you use a pressure module, read its

instruction sheet. The modules vary in use, media, and

accuracy.

Figure 12 shows the gage and differential modules.

Differential modules also work in gage mode by leaving

the low fitting open to atmosphere.

To measure pressure, attach the appropriate pressure

module for the process pressure to be tested

Proceed as follows to measure pressure:

W Warning

To avoid a violent release of pressure in a

pressurized system, shut off the valve and

slowly bleed off the pressure before you

attach the pressure module to the pressure

line.

Differential

HighLow

15 PSID/G

BURST PRESSURE 45 PSIG

PRESSURE MODULE

700

1 bar100 kPa

RANGE

Gage

RANGE

100 PSIG

BURST PRESSURE 300 PSIG

PRESSURE MODULE

700

7 bar700 kPa

gj11f.eps

Figure 12. Gage and Differential Pressure Modules

Caution

To avoid mechanically damaging the

pressure module, never apply more than

10 ft.-lb. (13.5 Nm) of torque between the

pressure module fittings, or between the

fittings and the body of the module. Always

apply appropriate torque between the

pressure module fitting and connecting

fittings or adapters.

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Using Measure Mode

To avoid damaging the pressure module from

overpressure, never apply pressure above the

rated maximum printed on the pressure

module.

To avoid damaging the pressure module from

corrosion, use it only with specified

materials. Refer to the printing on the

pressure module or the pressure module

instruction sheet for the acceptable material

compatibility.

1. Connect a pressure module to the calibrator as

shown in Figure 13. The threads on the pressure

modules accept standard ¼ NPT pipe fittings. Use the

supplied ¼ NPT to ¼ ISO adapter if necessary.

2. Press

A. The calibrator automatically senses

which pressure module is attached and sets its range

accordingly.

3. Zero the pressure module as described in the

module’s Instruction Sheet. Modules vary in zeroing

procedures depending on module type, but all require

pressing

If desired, continue pressing

A to change pressure

display units to psi, mmHg, inHg, cmH

O@4 °C,

cmH

O@20 °C, inH

O@4 °C, inH

O@20 °C, mbar,

bar, kg/cm

, or kPa.

Zeroing with Absolute Pressure Modules

To zero, adjust the calibrator to read a known pressure.

This can be barometric pressure, if it is accurately known,

for all but the 700PA3 module. The maximum range of

700PA3 is 5 psi; therefore the reference pressure must be

applied with a vacuum pump. An accurate pressure

standard can also apply a pressure within range for any

absolute pressure module. To adjust the calibrator

reading, proceed as follows:

1. Press K, REF Adjust will appear to the right of the

pressure reading.

2. Use X to increase or W to decrease the calibrator

reading to equal the reference pressure.

3. Press Kagain to exit zeroing procedure.

The calibrator stores and automatically reuses the zero

offset correction for one absolute pressure module so that

the module is not rezeroed every time you use it.

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725

Users Manual

Differential

Module

Tank

Isolation

Valve

Gage

Module

V mA

LOO P

V mA

TC RTD

100%

25%

RECALL

ZERO

MEAS

SOURCE

STORE

SETUP

MULTIFUNCTION CALIBRATOR

725

sh37f.eps

Figure 13. Connections for Measuring Pressure

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Using Source Mode

In SOURCE mode, the calibrator generates calibrated

signals for testing and calibrating process instruments;

supplies voltages, currents, frequencies, and resistances;

simulates the electrical output of RTD and thermocouple

temperature sensors; and measures gas pressure from

an external source, creating a calibrated pressure source.

Sourcing 4 to 20 mA

To select the current sourcing mode, proceed as follows:

1. Connect the test leads in the mA terminals (left

column).

2. If necessary, press

M for SOURCE mode.

3. Press

V for current and enter the desired current

you want by pressing

X and W keys.

Simulating a 4- to 20-mA Transmitter

Simulate is a special mode of operation in which the

calibrator is connected into a loop in place of a

transmitter and supplies a known, settable test current.

Proceed as follows:

1. Connect the 24 V loop power source as shown in

Figure 14.

2. If necessary, press

M for SOURCE mode.

3. Press

V until both mA and SIM display.

4. Enter the desired current by pressing

X and W

keys.

Sourcing Other Electrical Parameters

Volts, ohms, and frequency are also sourced and shown

in the lower display.

To select an electrical sourcing function, proceed as

follows:

1. Connect the test leads as shown in Figure 15,

depending on the source function.

2. If necessary, press

Mfor SOURCE mode.

3. Press

V for dc voltage, or F for frequency or

resistance.

4. Enter the desired output value by pressing

X and

W keys. Press Y and Z to select a different digit to

change.

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725

Users Manual

Loop

Power

Supply

Readout or

Controller

+24 V

Black

Red

–

V mA

LOO P

V mA

TC RTD

100%

25%

RECALL

ZERO

MEAS

SOURCE

STORE

SETUP

MULTIFUNCTION CALIBRATOR

725

sh17f.eps

Figure 14. Connections for Simulating a 4- to 20-mA Transmitter

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Using Source Mode

MEASURE

SOURCE / MEASURE

30V MAX ALL TERMINALS

RTD

COM COM

LOOP

MEASURE

SOURCE / MEASURE

30V MAX ALL TERMINALS

RTD

COM COM

LOOP

Red

Black

–

Red

Black

Common

+ mA

sh16f.eps

Figure 15. Electrical Sourcing Connections

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725

Users Manual

Simulating Thermocouples

Connect the calibrator TC input/output to the instrument

under test with thermocouple wire and the appropriate

thermocouple mini-connector (polarized thermocouple

plug with flat, in-line blades spaced 7.9 mm [0.312 in]

center to center). One pin is wider than the other. Do not

try to force a miniplug in the wrong polarization. Figure 16

shows this connection. Proceed as follows to simulate a

thermocouple:

1. Attach the thermocouple leads to the appropriate TC

miniplug, then to the TC input/output as shown in

Figure 16.

2. If necessary, press

M for SOURCE mode.

3. Press

T for the TC display. If desired, continue

pressing this key to select the desired thermocouple

type.

4. Enter the temperature you want by pressing

X and

W keys. Press Y and Z to select a different digit to

edit.

Simulating RTDs

Connect the calibrator to the instrument under test as

shown in Figure 17. Proceed as follows to simulate an

RTD:

1. If necessary, press

M for SOURCE mode.

2. Press

R for the RTD display.

Note

Use the 3W and 4W terminals for measurement

only, not for simulation. The calibrator simulates

a 2-wire RTD at its front panel. To connect to a 3-

wire or 4-wire transmitter, use the stacking

cables to provide the extra wires. See Figure 17.

3. Enter the temperature you want by pressing

X and

W keys. Press Y and Z to select a different digit to

edit.

4. If the 725 display indicates ExI HI, the excitation

current from your device under test exceeds the limits

of the 725.

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Using Source Mode

TEST DC PWR

++–

–+

Color depends

on type of TC

V mA

LOO P

V mA

TC RTD

100%

25%

RECALL

ZERO

MEAS

SOURCE

STORE

SETUP

MULTIFUNCTION CALIBRATOR

725

TC Miniplug

sh20f.eps

Figure 16. Connections for Simulating a Thermocouple

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725

Users Manual

V mA

LOOP

V mA

RTD

100%

25%

RECALL

ZERO

MEAS

SOURCE

STORE

SETUP

MULTIFUNCTION CALIBRATOR

725

BLACK

SENSOR TERMINALS

BLACK

RED

sh40f.eps

Figure 17. Connections for Simulating 3-Wire RTD

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Using Source Mode

Sourcing Pressure

The calibrator sources pressure by measuring pressure

supplied by a pump or other sources, and displaying the

pressure in the SOURCE field. Figure 20 shows how to

connect a pump to a Fluke pressure module which makes

it a calibrated source.

Many ranges and types of pressure modules are available

from Fluke. See “Accessories” near the back of this

manual. Before you use a pressure module, read its

Instruction Sheet. The modules vary in use, media, and

accuracy.

Attach the appropriate pressure module for the process

pressure to be tested.

Proceed as follows to source pressure:

WWarning

To avoid a violent release of pressure in a

pressurized system, shut off the valve and

slowly bleed off the pressure before you

attach the pressure module to the pressure

line.

Caution

To avoid mechanically damaging the

pressure module, never apply more than

10 ft.-lb. (13.5 Nm) of torque between the

pressure module fittings, or between the

fittings and the body of the module. Always

apply appropriate torque between the

pressure module fitting and connecting

fittings or adapters.

To avoid damaging the pressure module from

overpressure, never apply pressure above the

rated maximum printed on the pressure

module.

To avoid damaging the pressure module from

corrosion, use it only with specified

materials. Refer to the printing on the

pressure module or the pressure module

instruction sheet for the acceptable material

compatibility.

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725

Users Manual

1. Connect a pressure module to the calibrator as

shown in Figure 18. The threads on the pressure

modules accept standard ¼ NPT pipe fittings. Use the

supplied ¼ NPT to ¼ ISO adapter if necessary.

2. Press

U (lower display). The calibrator

automatically senses which pressure module is

attached and sets its range accordingly.

3. Zero the pressure module as described in the

module’s Instruction Sheet. Modules vary in zeroing

procedures depending on module type.

4. Pressurize the pressure line with the pressure source

to the desired level as shown on the display.

If desired, continue pressing

U to change pressure

display units to psi, mmHg, inHg, cmH

O@4 °C,

cmH

O@20 °C, inH

O@4 °C, inH

O@20 °C, mbar,

bar, kg/cm

, or kPa.

V mA

LOO P

V mA

TC RTD

100%

25%

RECALL

ZERO

MEAS

SOURCE

STORE

SETUP

MULTIFUNCTION CALIBRATOR

725

sh19f.eps

Figure 18. Connections for Sourcing Pressure

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Setting 0 % and 100 % Output Parameters

Setting 0 % and 100 % Output

Parameters

For current output, the calibrator assumes that 0 %

corresponds to 4 mA and 100 % corresponds to 20 mA.

For other output parameters, you must set the 0 % and

100 % points before you can use the step and ramp

functions. Proceed as follows:

1. If necessary, press

M for SOURCE mode.

2. Select the desired source function and use the arrow

keys to enter the value. Our example is temperature

source using 100 °C and 300 °C values for source.

3. Enter 100 °C and press and hold

J to store the

value.

4. Enter in 300 °C and press and hold

G to store the

value.

You can now use this setting for the following:

• Manually stepping an output with 25 % increments.

• Jump between the 0 and 100 % span points by

momentarily pushing

J or G.

Stepping and Ramping the Output

Two features are available for adjusting the value of

source functions.

• Stepping the output manually with the

H and I

keys, or in automatic mode.

• Ramping the output.

Stepping and ramping apply to all functions except

pressure, which requires that you use an external

pressure source.

Manually Stepping the mA Output

To manually step current output you can do the following:

• Use

H or I to step the current up or down in

25 % steps.

• Touch momentarily either

J to go to 0 %, or G

to go to 100 %.

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Auto Ramping the Output

Auto ramping gives you the ability to continuously apply a

varying stimulus from the calibrator to a transmitter, while

your hands remain free to test the response of the

transmitter.

When you press

L, the calibrator produces a

continuously repeating 0 % - 100 % - 0 % ramp in your

choice of three ramp waveforms:

•

E 0 % - 100 % - 0 % 40-second smooth ramp

• P 0 % - 100 % - 0 % 15-second smooth ramp

•

N 0 % - 100 % - 0 % Stair-step ramp in 25 %

steps, pausing 5 seconds at each step. Steps are

listed in Table 7.

To exit ramping, press any button.

Table 7. mA Step Values

Step 4 to 20 mA

0 % 4.000

25 % 8.000

50 % 12.000

75 % 16.000

100 % 20.000

Storing and Recalling Setups

You can store up to eight of your settings in a nonvolatile

memory and recall the settings for later use. A low battery

condition or a battery change does not jeopardize the

stored settings. Proceed as follows:

1. After you create a calibrator setup, press

S. In the

display, the memory locations appear.

2. Press

Y or Z to select locations one through eight. An

underscore appears below the selected memory

location.

3. Press S, only the stored memory location will be

displayed.

The setup is stored.

To recall setups, proceed as follows.

1. Press

Q. The memory locations appear on the

display.

2. Press

Y or Z to select the appropriate location and

press

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Calibrating a Transmitter

Use the measurement (upper display) and source (lower

display) modes to calibrate a transmitter. This section

applies to all but pressure transmitters. The following

example shows how to calibrate a temperature

transmitter.

Connect the calibrator to the instrument under test as

shown in Figure 19. Proceed as follows to calibrate a

transmitter

1. Press

l for current (upper display). If required,

press

l again to activate loop power.

2. Press

T (lower display). If desired, continue

pressing this key to select the desired thermocouple

type.

3. If necessary, press

M for SOURCE mode.

4. Set your zero and span parameters by pressing

and W keys. Enter these parameters by pressing and

holding

J and G. For more information on

setting parameters, see “Setting 0 % and 100 %”

earlier in this manual.

5. Perform test checks at 0-25-50-75-100 % points by

pressing

H or I. Adjust the transmitter as

necessary.

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Red

TEST DC PWR

+–+–

–+

Black

V mA

LOO P

V mA

TC RTD

100%

25%

RECALL

ZERO

MEAS

SOURCE

STORE

SETUP

MULTIFUNCTION CALIBRATOR

725

sh44f.eps

Figure 19. Calibrating a Thermocouple Transmitter

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Calibrating a Pressure Transmitter

The following example shows how to calibrate a pressure

transmitter.

Connect the calibrator to the instrument under test as

shown in Figure 20. Proceed as follows:

1. Press

l for current (upper display). If required,

press

l again to activate loop power.

2. Press

U (lower display).

3. If necessary, press

M for SOURCE mode.

4. Zero the pressure module.

5. Perform checks at 0 % and 100 % of span and adjust

the transmitter as necessary.

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Users Manual

Hand Pump

SIGNAL

TEST

–

Pressure

Module

Red

Black

Measure mA

Source Pressure

24 V Loop Power

Enabled

MULTIFUNCTION CALIBRATOR

725

V mA

LOO P

V mA

TC RTD

100%

25%

RECALL

ZERO

MEAS

SOURCE

STORE

SETUP

sh34f.eps

Figure 20. Calibrating a Pressure-to-Current (P/I) Transmitter

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Calibrating an I/P Device

The following test allows you to calibrate a device that

controls pressure. Proceed as follows:

1. Connect the test leads to the instrument under test as

shown in Figure 21. The connections simulate a

current-to-pressure transmitter and measures the

corresponding output pressure.

2. Press

A (upper display).

3. Press

V for sourcing current (lower display).

4. If necessary, press

M for SOURCE mode.

5. Enter the desired current by pressing

X and W

keys. Press Y and Z to select different digits.

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725

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SIGNAL

TEST

–

Pressure

Module

Red

Black

Measure

Pressure

Source mA

V mA

LOO P

V mA

TC RTD

100%

25%

RECALL

ZERO

MEAS

SOURCE

STORE

SETUP

MULTIFUNCTION CALIBRATOR

725

sh28f.eps

Figure 21. Calibrating a Current-to-Pressure (I/P) Transmitter

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Testing an Output Device

Use the source functions to test and calibrate actuators,

recording, and indicating devices. Proceed as follows:

1. Connect the test leads to the instrument under test

as shown in Figure 22.

2. Press

V for current or dc voltage, or F for

frequency or resistance (lower display).

3. If necessary, press

M for SOURCE mode.

V mA

LOO P

V mA

TC RTD

100%

25%

RECALL

ZERO

MEAS

SOURCE

STORE

SETUP

MULTIFUNCTION CALIBRATOR

725

Black

Red

0 to 1 V dc

Input

sh25f.eps

Figure 22. Calibrating a Chart Recorder

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Users Manual

Remote Control Commands

You can control the calibrator remotely from a PC running

a terminal emulator program. The remote control

commands give access to all capabilities of the calibrator

with the exception of pressure measurement. See Table

8A-8C for the remote commands and explanations.

The Fluke 700SC Serial Interface Cable Assembly (PN

667425) plugs into the pressure module connector and

terminates in a DB-9 connector which plugs directly into a

PC serial port. A DB-9 to DB-25 adapter is required to

connect to a PC.

The remote control interface on the 725 is activated by

turning the calibrator off, then turning it on again while

depressing the

M key. The calibrator will initialize with its

remote port enabled. The terminal emulator connected to

the calibrator should be set up for: 9600 baud, no parity,

8 data bits, and 1 stop bit.

Table 8A. Remote Control Upper Display

Serial Input Description

j mA measurement

L mA Loop Power

E Volts measurement

B Single broadcast of most recent upper display value and units

Table 8B. Remote Control Lower Display

Serial Input Description

A mA measurement

a mA source

I mA 2W Sim

V Volts measurement

v Volts source

M mV measurement

m mV source

K KHz measurement

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Remote Control Commands

Table 8B. Remote Control Lower Display (cont)

Serial Input Description

k KHz source

H Hz measurement

h Hz source

P CPM measurement

p CPM source

O Ohms measurement (default 2W)

o Select Ohms source

W 2-wire measurement (Ohms and RTDs)

X 3-wire measurement (Ohms and RTDs)

Y 4-wire measurement (Ohms and RTDs)

T Thermocouple measurement (default Type J) use “S” command to select sensor type

t Thermocouple source (default Type J) use “S” command to select sensor type

C Selects Centigrade ( T/C-RTD)

F Selects Fahrenheit ( T/C-RTD)

R RTD measurement mode (default Pt100 385) use “S” command to select sensor type

r RTD measurement mode (default Pt100 385) use “S” command to select sensor type

u Increment display source value

d Decrement display source value

< The < arrow key PC keyboard selects left arrow on 725

> The > arrow key PC keyboard selects right arrow on 725

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Users Manual

Table 8B. Remote Control Lower Display (cont)

Serial Input Description

0-9 Enter a source value using ascii characters 0,1,2,...9,-,.terminated by <CR> (carriage return)

-,.

<CR>

b Single Broadcast of most recent lower display value and units

Table 8C. "S" Commands Select Sensor Type

Selection Entry

Serial

Input

No. Thermocouple Type RTD Type

S 1 J Pt100 (3926)

2 K Pt100 (385)

3 T Pt100 (3916)

4 E Pt200 (385)

5 R Pt500 (385)

6 S Pt1000 (385)

7 B Ni120

BmV

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Replacing the Batteries

WWarning

To avoid false readings, which could lead to

possible electric shock or personal injury,

replace the batteries as soon as the battery

indicator (M) appears.

Figure 23 shows you how to replace the battery.

Replacing the Fuses

The calibrator comes equipped with two 0.05A, 250V,

socketed fuses to protect the calibrator.

WWarning

To avoid electrical shock, remove the test

leads from the calibrator before opening the

battery door. Close and latch the battery

door before using the calibrator.

The fuses can be removed and checked for resistance. A

value of < 10 Ω is good. Problems while measuring using

the right jacks indicate that F3 may have opened. If you

can’t measure or source current with the left jacks, F4

may have opened. To replace the fuses, refer to Figure

23 and perform the following steps:

1. Turn the calibrator off, remove the test leads from the

terminals, and hold the calibrator face down.

2. Using a flat-blade screwdriver, turn the battery door

screws 1/4-turn counterclockwise and remove the

battery door.

3. Remove and replace the damaged fuse.

4. Replace the battery door and secure it by turning the

screws 1/4-turn clockwise.

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725

Users Manual

Battery and

Compartment

Fuse

Compartment

sh38f.eps

Figure 23. Replacing the Battteries

Maintenance

Cleaning the Calibrator

W Warning

To avoid personal injury or damage to the

calibrator, use only the specified

replacement parts and do not allow water

into the case.

Caution

To avoid damaging the plastic lens and case,

do not use solvents or abrasive cleansers.

Clean the calibrator and pressure modules with a soft

cloth dampened with water or water and mild soap.

Service Center Calibration or Repair

Calibration, repairs, or servicing not covered in this

manual should be performed only by qualified service

personnel. If the calibrator fails, check the batteries first,

and replace them if needed.

Verify that the calibrator is being operated in accordance

with the instructions in this manual. If the calibrator is

faulty, send a description of the failure with the calibrator.

Pressure modules do not need to accompany the

calibrator unless the module is faulty also. Be sure to

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Maintenance

pack the calibrator securely, using the original shipping

container if it is available. Send the equipment postage

paid and insured, to the nearest Service Center. Fluke

assumes no responsibility for damage in transit.

The Fluke 725 calibrator covered by the warranty will be

promptly repaired or replaced (at Fluke’s option) and

returned to you at no charge. See the back of the title

page for warranty terms. If the warranty period has

expired, the calibrator will be repaired and returned for a

fixed fee. If the calibrator or pressure module is not

covered under the warranty terms, contact an authorized

service center for a price quote for repair.

To locate an authorized service center, refer to

“Contacting Fluke” at the beginning of the manual.

Replacement Parts

Table 9 lists the part number of each replaceable part.

Refer to Figure 24.

Table 9. Replacement Parts

Item Description PN Qty.

1 Case top 664232 1

2 LCD mask 664273 1

3 Elastomeric strips 802063 2

4 Input/output bracket 691391 1

5 LCD bracket 667287 1

6 Mounting screws 494641 11

7 Backlight 690336 1

8 LCD 690963 1

9 Keypad 690955 1

10 Case bottom 664235 1

11 AA alkaline batteries 376756 4

12 Case screws 832246 4

13 Battery door 664250 1

14 Accessory mount 658424 1

15 Tilt stand 659026 1

16 Battery door 1/4-turn

fasteners

948609 2

17 TL75 series test leads 855742 1

18 Test lead, red

Test lead, black

688051

688066

19 725 Product Overview

Manual

1549644 1

20 AC72 alligator clip, red

AC72 alligator clip, black

1670641

1670652

21 CD ROM, contains User

Manual

1549615 1

22 Input Decal 690948 1

23 Fuse 0.05A/250V 2002234 2

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zi45f.eps

Figure 24. Replacement Parts

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Accessories

For more information about these accessories and their

prices, contact your Fluke representative. Pressure

Modules and Fluke model numbers (see Table 10) are

listed below. (Differential models also operate in gage

mode.) Contact your Fluke representative about new

pressure modules not listed here.

• 700HTP 0 to 10,000 PSI Pump

• 700PTP -11.6 to 360 PSI Pump

• 700TC1 and 700TC2 Thermocouple Mini-plug Kits

External Fluke Pressure Module Compatibility

The output of Fluke 700P pressure modules can cause

the 725’s 5 digit display to overflow, or else produce

values that are too low to be read if inappropriate units

are selected. This is prevented by displaying OL on the

display per the following table.

Table 10. Fluke Pressure Module Compatibility

Pressure Unit Module Compatibility

Psi Available on all pressure ranges

In. H

0 All ranges through 3000 psi

cm. H

0 All ranges through 1000 psi

Bar 15 psi and above

Mbar All ranges through 1000 psi

KPa Available on all pressure ranges

In.Hg. Available on all pressure ranges

mm. Hg All ranges through 1000 psi

Kg/cm

15 psi and above

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Table 11. Pressure Modules

Fluke Model Number Range Type and Media

Fluke-700P00 0 to 1” H

O differential, dry

Fluke-700P01 0 to 10” H

O differential, dry

Fluke-700P02 0 to 1 psi differential, dry

Fluke-700P22 0 to 1 psi differential, wet

Fluke-700P03 0 to 5 psi differential, dry

Fluke-700P23 0 to 5 psi differential, wet

Fluke-700P04 0 to 15 psi differential, dry

Fluke-700P24 0 to 15 psi differential, wet

Fluke-700P05 0 to 30 psi gage, wet

Fluke-700P06 0 to 100 psi gage, wet

Fluke-700P27 0 to 300 psi gage, wet

Fluke-700P07 0 to 500 psi gage, wet

Fluke-700P08 0 to 1,000 psi gage, wet

Fluke-700P09 0 to 1,500 psi gage, wet

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Accessories

Table 11. Pressure Modules (cont.)

Fluke Model Number Range Type and Media

Fluke-700P29 0 to 3,000 psi gage, wet

Fluke-700P30 0 to 5,000 psi gage, wet

Fluke-700P31 0 to 10,000 psi gage, wet

Fluke-700PA3 0 to 5 psi absolute, wet

Fluke-700PA4 0 to 15 psi absolute, wet

Fluke-700PA5 0 to 30 psi absolute, wet

Fluke-700PA6 0 to 100 psi absolute, wet

Fluke-700PV3 0 to -5 psi vacuum, dry

Fluke-700PV4 0 to -15 psi vacuum, dry

Fluke-700PD2 ±1 psi dual range, dry

Fluke-700PD3 ±5 psi dual range, dry

Fluke-700PD4 ±15 psi dual range, dry

Fluke-700PD5 −15/+30 psi dual range, wet

Fluke-700PD6 −15/+100 psi dual range, wet

Fluke-700PD7 −15/+200 psi dual range, wet

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Specifications

Specifications are based on a one year calibration cycle

and apply from +18 °C to +28 °C unless stated otherwise.

All specifications assume a 5 minute warmup period.

DC Voltage Measurement

Range Resolution

Accuracy,

(% of Reading + Counts)

30 V

(upper

display)

0.001 V 0.02 % + 2

20 V

(lower

display)

0.001 V 0.02 % + 2

90 mV 0.01 mV 0.02 % + 2

Temperature coefficient -10 °C to 18 °C, +28 °C to

55 °C: ±0.005 % of range per °C

DC Voltage Source

Range Resolution

Accuracy,

(% of Reading + Counts)

100 mV 0.01 mV 0.02 % + 2

10 V 0.001 V 0.02 % + 2

Temperature coefficient -10 °C to 18 °C, +28 °C to

55 °C: ±0.005 % of range per °C

Maximum load: 1 mA

Millivolt Measurement and Source*

Range Resolution Accuracy

-10 mV to 75 mV 0.01 mV ±(0.025 % + 1 count)

Maximum input voltage: 30 V

Temperature coefficient -10 °C to 18 °C, +28 °C to

55 °C: ±0.005 % of range per °C

*Select this function by pressing T. The signal is

available at the thermocouple miniplug connector.

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Specifications

DC mA Measurement and Source

Range Resolution

Accuracy,

(% of Reading + Counts)

24 mA 0.001 mA

0.02 % + 2

Temperature coefficient -10 °C to 18 °C, +28 °C to

55 °C: ±0.005 % of range per °C

Drive capability: 1000 Ω at 20 mA

Ohms Measurement

Accuracy ± Ω*

Ohms Range

4-Wire 2- and 3-Wire

0 to 400 Ω 0.1 0.15

400 to 1.5 kΩ 0.5 1.0

1.5 to 3.2 kΩ 11.5

Temperature coefficient -10 °C to 18 °C, +28 °C to

55 °C: ±0.005 % of range per °C

Excitation Current: 0.2 mA

Maximum input voltage: 30 V

* 2-wire: Does not include lead resistance.

3-wire: Assumes matched leads with a total resistance

not exceeding 100 Ω.

Ohms Source

Ohms Range

Excitation Current from

Measurement Device

Accuracy

± Ω

15 to 400 Ω 0.15 to 0.5 mA 0.15

15 to 400 Ω 0.5 to 2 mA 0.1

400 to 1.5 kΩ 0.05 to 0.8 mA 0.5

1.5 to 3.2 kΩ 0.05 to 0.4 mA 1

Temperature coefficient -10 °C to 18 °C, +28 °C to

55 °C: ± 0.005 % of resistance range per °C

Resolution

15 to 400 Ω 0.1 Ω

400 to 3.2 kΩ 1 Ω

Frequency Measurement

Range Resolution Accuracy

2.0 to 1000.0 CPM 0.1 CPM ± (0.05 % + 1 count)

1 to 1000 Hz 0.1 Hz ± (0.05 % + 1 count)

1.0 to 10.0 kHz 0.01 kHz ± (0.05 % + 1 count)

Sensitivity: 1V peak-to-peak minimum

Waveform: squarewave

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Frequency Source

Range

Resolution

Accuracy

(% of output

frequency)

2.0 to 1000.0 CPM 0.1 CPM ± 0.05 %

1 to 1000 Hz 1 Hz ± 0.05 %

1.0 to 10.0 kHz 0.1 kHz ± 0.25 %

Waveform: 5 V p-p squarewave, -0.1 V offset

Temperature, Thermocouples

Type

Range

Measure and Source

Accuracies (ITS-90)

J -200 to 0 °C

0 to 1200 °C

1.0 °C

0.7 °C

K -200 to 0 °C

0 to 1370 °C

1.2 °C

0.8 °C

T -200 to 0 °C

0 to 400 °C

1.2 °C

0.8 °C

E -200 to 0 °C

0 to 950 °C

0.9 °C

0.7 °C

R -20 to 0 °C

0 to 500 °C

500 to 1750 °C

2.5 °C

1.8 °C

1.4 °C

S -20 to 0 °C

0 to 500 °C

500 to 1750 °C

2.5 °C

1.8 °C

1.5 °C

B 600 to 800 °C

800 to 1000 °C

1000 to 1800 °C

2.2 °C

1.8 °C

1.4 °C

L -200 to 0 °C

0 to 900 °C

0.85 °C

0.7 °C

U -200 to 0 °C

0 to 400 °C

1.1 °C

0.75 °C

N -200 to 0 °C

0 to 1300 °C

1.5 °C

0.9 °C

XK -200 to -100 °C

-100 to 800 °C

0.5 °C

0.6 °C

BP 0 to 800 °C

800 to 2500 °C

1.2 °C

2.5 °C

Resolution:

J, K, T, E, L, N, U, XK, BP: 0.1 °C, 0.1 °F

B, R, S: 1 °C, 1 °F

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Specifications

Loop Power Supply

Voltage: 24 V

Maximum current: 22 mA

Short circuit protected

RTD Excitation (simulation)

Allowable Excitation by RTD type

Ni 120 0.15 to 3.0 mA

Pt 100-385 0.15 to 3.0 mA

Pt 100-392 0.15 to 3.0 mA

Pt 100-JIS 0.15 to 3.0 mA

Pt 200-385 0.15 to 3.0 mA

Pt 500-385 0.05 to 0.80 mA

Pt 1000-385 0.05 to 0.40 mA

Temperature, RTD Ranges, and Accuracies (ITS-90)

Accuracy

Type Range °C Measure 4-Wire °C Measure 2- and 3-Wire* °C Source °C

Ni120 -80 to 260 0.2 0.3 0.2

Pt100-385 - 200 to 800 0.33 0.5 0.33

Pt100-392 -200 to 630 0.3 0.5 0.3

Pt100-JIS -200 to 630 0.3 0.5 0.3

Pt200-385 -200 to 250

250 to 630

0.2

0.8

0.3

1.6

0.2

0.8

Pt500-385 -200 to 500

500 to 630

0.3

0.4

0.6

0.9

0.3

0.4

Pt1000-385 -200 to 100

100 to 630

0.2

0.4

0.5

0.2

Resolution: 0.1 °C, 0.1 °F

Allowable excitation current (source): Ni120, Pt100-385, Pt100-392, Pt100-JIS, Pt200-385: 0.15 to 3.0 mA

Pt500-385: 0.05 to 0.80 mA; Pt1000-385: 0.05 to 0.40 mA

RTD Source: Addresses pulsed transmitters and PLCs with pulses as short as 5 ms.

* 2-wire: Does not include lead resistance.

3-wire: Assumes matched leads with a total resistance not exceeding 100 Ω.

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Pressure Measurement

Range Resolution Accuracy Units

Determined by

pressure module

5 digits Determined by

pressure module

psi, inH

O@4 °C, inH

O@20 °C, kPa, cmH

O@4 °C,

cmH

O@20 °C, bar, mbar, kg/cm

, mmHg, inHg

General Specifications

Operating temperature -10 °C to 55 °C

Storage temperature - 20 °C to 71 °C

Operating altitude 3000 meters above mean sea level

Relative Humidity (% RH operating without condensation) 90 % (10 to 30 °C)

75 % (30 to 40 °C)

45 % (40 to 50 °C)

35 % (50 to 55 °C)

uncontrolled < 10 °C

Vibration Random, 2 g, 5 to 500 Hz

Safety EN 61010-1:1993, ANSI/ISA S82.01-1994; CAN/CSA C22.2

No 1010.1:1992

Power requirements 4 AA alkaline batteries

Size 96 x 200 x 47 mm. (3.75 x 7.9 x 1.86 in)

Weight 650 gm (1 lb, 7 oz)

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Index

—0—

0% output parameter, setting, 36

—1—

100% output parameter, setting, 36

—4—

4 to 20 mA transmitter

simulating, 28

—A—

Accessories, 52

Auto ramping output, 37

—B—

Battery, replacing, 48

—C—

Calibration, 49

Cleaning calibrator, 49

Connections

for pressure measurement, 25

for pressure sourcing, 35

—D—

Display, 13

—E—

Electrical parameters

measurement, 18

sourcing, 28

—G—

Getting started, 14

—I—

I/P device, calibrating, 42

Input terminals, 8

Input/output terminals and connectors

(table), 9

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725

Users Manual

—K—

Key functions (table), 11

Keys, 10

—L—

Loop power

simulating, 28

supplying, 16

—M—

Measure functions, summary (table), 2

Measure mode, 16

Measuring

pressure, 25

temperature with RTDs, 22

temperature with thermocouples, 19

—O—

Output device, testing, 44

Output terminals, 8

—P—

Parts list, 50

Pressure modules available, 52

Pressure modules, zeroing, 26

Pressure transmitter, calibrating, 40

—R—

Recalling setups, 37

Remote control commands, 45

Repair, 49

RTD

simulating, 31

RTD

measuring, 22

types, 22

—S—

Safety information, 3

Servicing, 49

Setup

recalling, 37

storing, 37

Thermocouple, 31

Simulating

loop power, 28

RTD, 31

thermocouples, 31

Source functions, summary (table), 2

Source mode, 28

Sourcing

4 to 20 mA, 28

electrical parameters, 28

pressure, 34

thermocouples, 31

Specifications, 55

Standard equipment, 3

Stepping output, 36

Storing setups, 37

—T—

Temperature

measuring with RTD, 22

measuring with thermocouple, 19

Terminals

input, 8

output, 8

Thermocouple

measuring, 19

measuring temperature, 19

sourcing, 31

types, 19

Transmitter

4 to 20 mA, simulating, 28

Transmitter, calibrating, 38

—Z—

Zeroing pressure modules, 26

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9100S

Dry-Well Calibrator

Users Guide

9100S___ugeng0000

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Limited Warranty & Limitation of Liability

Each product from Fluke Corporation, (“Fluke”) is warranted to be free from defects in material and