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Fluke 725Ex User Manual

Multifunction process calibrator
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725Ex
Multifunction Process Calibrator
Users Manual
January 2005 Rev. 3, 5/18
© 2005-2018 Fluke Corporation, All rights reserved. Specifications are subject to change without notice.
All product names are trademarks of their respective companies.
Fluke-Direct
.com
info@Fluke-Direct.com
1.888.610.7664

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Summary of Contents for Fluke 725Ex

  • Page 1 725Ex Multifunction Process Calibrator Users Manual January 2005 Rev. 3, 5/18 © 2005-2018 Fluke Corporation, All rights reserved. Specifications are subject to change without notice. All product names are trademarks of their respective companies. Fluke-Direct .com info@Fluke-Direct.com 1.888.610.7664...
  • Page 2 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.

  • Page 3: Table Of Contents

    Table of Contents Title Page Introduction ........................1 Contact Fluke ......................... 1 Standard Equipment ....................... 3 Safety Information ......................3 Ex Hazardous Areas ...................... 3 Faults and Damage ....................9 Faults and Damage ....................9 Safety Regulations ....................9 Certification Information ..................... 10 Getting Acquainted with the Calibrator ................
  • Page 4 725Ex Users Manual Current Measurement with Loop Power ..............19 Measuring Electrical Parameters (Lower Display) ............ 21 Measuring Temperature .................... 22 Using Thermocouples ..................22 Using Resistance-Temperature Detectors (RTDs) ..........25 Measuring Pressure ....................28 Zeroing with Absolute Pressure Modules ..............29 Using Source Mode .......................
  • Page 5 Frequency Measurement ................... 56 Frequency Source ..................... 57 Temperature, Thermocouples ................... 57 Loop Power Supply ....................57 RTD Excitation (simulation) ..................58 Temperature, RTD Ranges, and Accuracies ............. 58 Pressure Measurement ..................... 59 General Specifications ....................59 Fluke-Direct .com info@Fluke-Direct.com 1.888.610.7664...

  • Page 6: Introduction

    WWarning Read "Safety Information" before using the Calibrator. The Fluke 725Ex Multifunction Process Calibrator (hereafter referred to as “the Calibrator”) is a handheld, battery-operated instrument that measures and sources electrical and physical parameters. For a summary of source and measurement functions, see Table 1.
  • Page 7 Pt100 Ω (3916) Pt200 Ω (385) Pt500 Ω (385) Pt1000 Ω (385) Pressure Fluke 750PEx series modules ranging from Fluke 750PEx series modules ranging from 10 inH2O to 3000 psi 10 inH2O to 3000 psi using an external pressure source (hand pump).

  • Page 8: Standard Equipment

    Ex Hazardous Areas The items listed below and shown in Figure 1 are included The Model 725Ex Calibrator has been designed for use in with the Calibrator. If the Calibrator is damaged or Ex Hazardous Areas. These are areas where potentially something is missing, contact the place of purchase flammable or explosive vapors may occur.
  • Page 9 Information Pertaining to Electrical Instruments in on the other equipment must exceed the Voc and Isc Hazardous (Classified) Locations and to ANSI/ISA- ratings for the terminals connected to on the 725Ex RP12.06.01-2003 Recommended Practice for Wiring Methods for Hazardous (Classified) Locations calibrator.
  • Page 10 W Warning To prevent fire, explosion, or personal injury: • Use the Calibrator only as described in this User Manual and the Fluke 725Ex CCD (Concept Control Drawing) or the protection provided by the Calibrator may be impaired. • Inspect the Calibrator before use. Do not use it if it appears damaged.
  • Page 11 725Ex Users Manual • Disconnect test leads from the circuit under test before changing to another measure or source function. • When measuring the pressure of toxic or flammable gases, care must be taken to minimize the possibility of leakage. Confirm that all pressure connections are properly sealed.
  • Page 12 Mulitfunction Process Calibrator Ex Hazardous Areas AC72 AC175 Alligator Clips Alligator Clips TL75 Test Lead Set Stackable Test Leads aly01f.eps Figure 1. Standard Equipment Fluke-Direct .com info@Fluke-Direct.com 1.888.610.7664...
  • Page 13 725Ex Users Manual Table 2. Symbols Symbol Meaning Symbol Meaning WARNING. RISK OF DANGER. Consult user documentation.  Power ON/OFF Double insulated Earth ground Pressure  Certified by CSA Group to North American safety Battery  standards. Conforms to relevant Australian Safety and EMC Direct current ...

  • Page 14: Faults And Damage

    Ex hazardous area, unless the area is known to be • Functioning errors occur safe, do not connect to any circuits that exceed the • Permitted limitations are exceeded entity parameters defined on Fluke 725Ex CCD Control Drawing. See Ex Hazardous Areas. Fluke-Direct .com info@Fluke-Direct.com 1.888.610.7664...

  • Page 15: Certification Information

    Class I Zone 0 AEx/Ex ia IIB 171 °C • Ta = -10 °C… +55 °C MULTIFUNCTION 725Ex PROCESS CALIBRATOR • Manufactured by Fluke Corporation 6920 Seaway Blvd. Everett, WA 98203, USA Getting Acquainted with the Calibrator Input and Output Terminals V mA ZERO LOOP Figure 2 shows the Calibrator input and output terminals.
  • Page 16 Terminals for sourcing or measuring voltage, resistance, frequency, and RTDs. ,  V, RTD, Hz, Ω terminals SOURCE/ MEASURE Terminals for sourcing and measuring current, and performing 3W and 4W RTD ,  mA terminals, 3W, 4W measurements. Fluke-Direct .com info@Fluke-Direct.com 1.888.610.7664...

  • Page 17: Keys

    100% 100% SETUP SETUP RECALL RECALL REFER TO CONTROL DRAWING: ANSCHLUSSSCHEMA BEACHTEN: SUIVRE LE SCHÉMA DE CONNEXION: FLUKE 725Ex CCD 30V MAX ALL TERMINALS 30V MAX ALL TERMINALS SOURCE / MEASURE SOURCE / MEASURE MEASURE MEASURE mA + mA +...
  • Page 18  Slow repeating 0 % - 100 % - 0 % ramp    Fast repeating 0 % - 100 % - 0 % ramp  Repeating 0 % - 100 % - 0 % ramp in 25 % steps Fluke-Direct .com info@Fluke-Direct.com 1.888.610.7664...
  • Page 19 725Ex Users Manual Table 4. Key Functions (cont.) Description  Disables Shut Down Mode +  Enables Shut Down Mode +   Increases or decreases the source level.   Cycles through the 2-, 3-, and 4-wire selections. Moves through the memory locations of calibrator setups.

  • Page 20: Display

    Getting Acquainted with the Calibrator Display Figure 4 shows the elements of the display. Memory Locations Loop for Calibrator Setups Annunciator Low Battery Symbol Units Display Mode Indicator Auto Ramp sh07f.eps Figure 4. Elements of a Typical Display Fluke-Direct .com info@Fluke-Direct.com 1.888.610.7664...

  • Page 21: Getting Started

    725Ex Users Manual    Getting Started Press to select a digit to change. Press  to select 1 V for the output value. Press and hold This section introduces some basic operations of the to enter 1 V as the 0 % value.
  • Page 22 Mulitfunction Process Calibrator Shut Down Mode aly39f.eps Figure 5. Voltage-to-Voltage Test Fluke-Direct .com info@Fluke-Direct.com 1.888.610.7664...

  • Page 23: Contrast Adjustment

    725Ex Users Manual Contrast Adjustment To adjust the contrast, proceed as follows: Press  and  until Contst Adjust is displayed as shown in Figure 6. MULTIFUNCTION 725Ex PROCESS CALIBRATOR Press and hold  to darken contrast. Press and hold  to lighten contrast.

  • Page 24: Using Measure Mode

    Using Measure Mode Measuring Electrical Parameters (Upper Display) To measure the current or voltage output of a transmitter, MULTIFUNCTION 725Ex PROCESS CALIBRATOR or to measure the output of a pressure instrument, use the upper display and proceed as follows: ...
  • Page 25 725Ex Users Manual MUL TIFUNC TIO N 725E x PROCESS CALIBRATOR V mA ZER O LOOP V mA ME AS S OUR CE ° ° TEST DC PW – + – STORE 100% SETUP REC ALL – Blac k aly18f.eps Figure 8.

  • Page 26: Measuring Electrical Parameters (Lower Display)

    Using Measure Mode Measuring Electrical Parameters (Lower Display) To measure the electrical parameters using the lower display, proceed as follows: Connect the Calibrator as shown in Figure 9. MULTIFUNCTION 725Ex PROCESS CALIBRATOR  If necessary, press for MEASURE mode (lower display).

  • Page 27: Measuring Temperature

    725Ex Users Manual Measuring Temperature WCaution Using Thermocouples One thermocouple pin is wider than the other. To avoid possible damage to Calibrator or to The Calibrator supports twelve standard thermocouples, equipment under test do not try to force a including types E, N, J, K, T, B, R, S, L, XK, BP, and U.
  • Page 28 Red or Pink 80 % W + 20 % Re 0 to 2500 *American National Standards Institute (ANSI) device negative lead (L) is always red. **International Electrotechnical Commission (IEC) device negative lead (L) is always white. Fluke-Direct .com info@Fluke-Direct.com 1.888.610.7664...
  • Page 29 725Ex Users Manual 30V 24mA MAX ALL TERMINALS SOURCE / MEASURE MEASURE mA + Process Temperature LOOP mA - Warning 30 V maximum to TC Miniplug aly12f.eps Figure 10. Measuring Temperature with a Thermocouple Fluke-Direct .com info@Fluke-Direct.com 1.888.610.7664...

  • Page 30: Using Resistance-Temperature Detectors (Rtds)

    Attach the RTD to input terminals as shown in provides the lowest measurement precision. Figure 11. If necessary, toggle between °C or °F temperature units by pressing  Fluke-Direct .com info@Fluke-Direct.com 1.888.610.7664...
  • Page 31 725Ex Users Manual Table 6. RTD Types Accepted α RTD Type Ice Point (R Material 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...
  • Page 32 - be measured 30V 24mA MAX ALL TERMINALS SOURCE / MEASURE MEASURE mA + Resistance to LOOP mA - be measured aly15f.eps Figure 11. Measuring Temperature with an RTD, Measuring 2-, 3-, and 4-Wire Resistance Fluke-Direct .com info@Fluke-Direct.com 1.888.610.7664...

  • Page 33: Measuring Pressure

    Measuring Pressure Many ranges and types of pressure modules are available Gage Differential from Fluke. See “Accessories” near the back of this High manual. Before using a pressure module, read its instruction sheet. The modules vary in use, media, and accuracy.

  • Page 34: Zeroing With Absolute Pressure Modules

     pressing If desired, continue pressing  to change pressure O@4 °C, display units to psi, mmHg, inHg, cmH O@20 °C, inH O@4 °C, inH O@20 °C, O@60 °F, mbar, bar, kg/cm , or kPa. Fluke-Direct .com info@Fluke-Direct.com 1.888.610.7664...
  • Page 35 725Ex Users Manual Isolation Valve Gage Module 725Ex MULTIFUNCTION PROCESS CALIBRATOR V mA ZERO LOOP V mA MEAS SOURCE ° ° Differential STORE 100% SETUP Module RECALL Tank aly37f.eps Figure 13. Connections for Measuring Pressure Fluke-Direct .com info@Fluke-Direct.com 1.888.610.7664...

  • Page 36: Using Source Mode

    Enter the desired output value by pressing Calibrator is connected into a loop in place of a    keys. Press to select a different digit to transmitter and supplies a known, settable test current. change. Proceed as follows: Fluke-Direct .com info@Fluke-Direct.com 1.888.610.7664...
  • Page 37 Power Supply Readout or Controller – Refer to Fluke 725Ex CCD Control Drawing when using in an Ex hazardous area. aly17f.eps Figure 14. Connections for Simulating a 4 to 20- mA Transmitter in a non-Ex hazardous Area Fluke-Direct .com info@Fluke-Direct.com...
  • Page 38 30V 24mA MAX ALL TERMINALS SOURCE / MEASURE MEASURE mA + LOOP mA - Device Under Test – Black Common Refer to Fluke 725Ex CCD Control Drawing when using in an Ex hazardous area. aly16f.eps Figure 15. Electrical Sourcing Connections Fluke-Direct .com info@Fluke-Direct.com 1.888.610.7664...

  • Page 39: Simulating Thermocouples

    725Ex Users Manual Simulating Thermocouples Simulating RTDs Connect the Calibrator TC input/output to the instrument Connect the Calibrator to the instrument under test as under test with thermocouple wire and the appropriate shown in Figure 17. Proceed as follows to simulate an...
  • Page 40 LOOP – V mA MEAS SOURCE ° ° STORE 100% SETUP RECALL TC Miniplug Refer to Fluke 725Ex CCD Control Drawing when using in an Ex hazardous area. aly20f.eps Figure 16. Connections for Simulating a Thermocouple Fluke-Direct .com info@Fluke-Direct.com 1.888.610.7664...
  • Page 41 725Ex Users Manual Sensor Terminals Black Black Refer to Fluke 725Ex CCD Control Drawing when using in an Ex hazardous area. aly40f.eps Figure 17. Connections for Simulating 3-Wire RTD Fluke-Direct .com info@Fluke-Direct.com 1.888.610.7664...

  • Page 42: Source Pressure Mode

    (13.5 Nm) of torque between the pressure pressure in the SOURCE field. Figure 18 shows how to module fittings, or between the fittings and connect a pump to a Fluke pressure module which makes the body of the module. Always apply it a calibrated source.
  • Page 43 725Ex Users Manual Connect a pressure module to the Calibrator as shown in Figure 18. The threads on the pressure modules accept Pressure standard ¼ NPT pipe fittings. Use the supplied ¼ NPT to Module ¼ ISO adapter if necessary.

  • Page 44: Setting 0 % And 100 % Output Parameters

    To manually step current output, do the following: •   to step the current up or down in 25 % steps. •   Touch momentarily either to go to 0 %, or go to 100 %. Fluke-Direct .com info@Fluke-Direct.com 1.888.610.7664...

  • Page 45: Auto Ramping The Output

    725Ex Users Manual Auto Ramping the Output Storing and Recalling Setups Auto ramping gives the ability to continuously apply a Store up to eight settings in a nonvolatile memory and varying stimulus from the Calibrator to a transmitter, while recall the settings for later use. A low battery condition or a your hands remain free to test the response of the battery change does not jeopardize the stored settings.

  • Page 46: Calibrating A Transmitter

    (upper display). If required, press  again to activate loop power.  Press (lower display). If desired, continue pressing this key to select the desired thermocouple type.  If necessary, press for SOURCE mode. Fluke-Direct .com info@Fluke-Direct.com 1.888.610.7664...
  • Page 47 SOURCE ° ° TEST DC PWR – + – STORE 100% SETUP RECALL – Black Refer to Fluke 725Ex CCD Control Drawing when using in an Ex hazardous area. aly44f.eps Figure 19. Calibrating a Thermocouple Transmitter Fluke-Direct .com info@Fluke-Direct.com 1.888.610.7664...

  • Page 48: Calibrating A Pressure Transmitter

     Press (lower display).  If necessary, press for SOURCE mode. Zero the pressure module. Perform checks at 0 % and 100 % of span and adjust the transmitter as necessary. Fluke-Direct .com info@Fluke-Direct.com 1.888.610.7664...
  • Page 49 V mA ZERO LOOP V mA MEAS SOURCE ° ° STORE 100% SETUP RECALL Black Refer to Fluke 725Ex CCD Control Drawing when using in an Ex hazardous area. aly34f.eps Figure 20. Calibrating a Pressure-to-Current (P/I) Transmitter Fluke-Direct .com info@Fluke-Direct.com 1.888.610.7664...

  • Page 50: Calibrating An I/P Device

     Press (upper display).  Press for sourcing current (lower display).  If necessary, press for SOURCE mode.   Enter the desired current by pressing   keys. Press to select different digits. Fluke-Direct .com info@Fluke-Direct.com 1.888.610.7664...
  • Page 51 V mA ZERO LOOP V mA MEAS SOURCE ° ° STORE 100% SETUP RECALL Black Refer to Fluke 725Ex CCD Control Drawing when using in an Ex hazardous area. aly28f.eps Figure 21. Calibrating a Current-to-Pressure (I/P) Transmitter Fluke-Direct .com info@Fluke-Direct.com 1.888.610.7664...

  • Page 52: Switch Test

    The upper main display indicates the applied pressure, CLOSE will be displayed to the right of the pressure reading to indicate closed contacts Apply pressure with the pump slowly until the switch opens. Fluke-Direct .com info@Fluke-Direct.com 1.888.610.7664...

  • Page 53: Testing An Output Device

    MEAS SOURCE ° ° STORE 100% SETUP RECALL 0 to 1 V dc Input Black Refer to Fluke 725Ex CCD Control Drawing when using in an Ex hazardous area. aly25f.eps Figure 22. Calibrating a Chart Recorder Fluke-Direct .com info@Fluke-Direct.com 1.888.610.7664...

  • Page 54: Replacing The Batteries

    To prevent fire, explosion, or personal injury: • Remove the Calibrator from the Ex- hazardous area before opening the battery door. See Ex Hazardous Areas. Figure 23 shows how to replace the batteries. sh38f.eps Figure 23. Replacing the Batteries Fluke-Direct .com info@Fluke-Direct.com 1.888.610.7664...

  • Page 55: Approved Batteries

    725Ex Users Manual Approved Batteries Table 8. Approved Batteries Battery Manufacturer Type (All Batteries Alkaline- AA 1.5 V) Duracell MN1500 Eveready (Energizer) Maintenance W Caution Cleaning the Calibrator To avoid damaging the plastic lens and case, do not use solvents or abrasive cleansers.

  • Page 56: Service Center Calibration Or Repair

    Mulitfunction Process Calibrator Maintenance Service Center Calibration or Repair The Fluke 725Ex Calibrator covered by the warranty will be promptly repaired or replaced (at Fluke’s option) and Calibration, repairs, or servicing must be performed only returned to you at no charge. See the back of the title by qualified service personnel.
  • Page 57 Accessory mount 2151981 Tilt stand 2097826 TL75 series test set 855742 Cap, Black 3986568 Cap, Red 3995524 Fluke – 7XX Test Lead Set 3397308 AC175 Alligator clip, red 4239092 Alligator clip, black 4239050 Input Decal 690948 4926220 Fluke 725Ex Control Drawing...

  • Page 58: Accessories

    External Fluke Pressure Module Compatibility For more information about these accessories and their The output of Fluke 750PEx pressure modules can cause prices, contact a Fluke representative. Pressure Modules the 5 digit display of the Calibrator to overflow, or else...
  • Page 59 725Ex Users Manual Table 11. Pressure Modules Fluke Model Number Range Type and Media Fluke-750P01Ex 0 inH20 to 10 inH20 differential, Low: dry High: dry Fluke-750P24Ex 0 psi to 15 psi differential, Low: dry High: wet Fluke-750P05Ex 0 psi to 30 psi...

  • Page 60: Specifications

    ±0.005 % of range per °C Temperature coefficient -10 °C to 18 °C, +28 °C to 55 °C: ±0.005 % of range per °C *Select this function by pressing . The signal is available at the thermocouple miniplug connector. Fluke-Direct .com info@Fluke-Direct.com 1.888.610.7664...

  • Page 61: Dc Ma Measurement And Source

    725Ex Users Manual DC mA Measurement and Source Ohms Source Accuracy, Excitation Current Accuracy Range Resolution Ohms Range from Measurement (% of Reading + Counts) ± Ω Device 24 mA 0.001 mA 0.02 % + 2 15 Ω to 400 Ω...

  • Page 62: Frequency Source

    1.8 °C Maximum current: 24 mA 500 °C to 1750 °C 1.4 °C Short circuit protected -20 °C to 0 °C 2.5 °C 0 °C to 500 °C 1.8 °C 500 °C to 1750 °C 1.5 °C Fluke-Direct .com info@Fluke-Direct.com 1.888.610.7664...

  • Page 63: Rtd Excitation (Simulation)

    725Ex Users Manual RTD Excitation (simulation) Allowable Excitation by RTD type Ni 120 0.15 mA to 3.0 mA Pt 100-385 0.15 mA to 3.0 mA Pt 100-3926 0.15 mA to 3.0 mA Pt 100-3916 0.15 mA to 3.0 mA Pt 200-385 0.05 mA to 0.80 mA...

  • Page 64: Pressure Measurement

    (% RH operating without condensation) 75 % (30 °C to 40 °C) 45 % (40 °C to 50 °C) 35 % (50 °C to 55 °C) uncontrolled <10 °C Vibration Random, 2 g, 5 Hz to 500 Hz Fluke-Direct .com info@Fluke-Direct.com 1.888.610.7664...
  • Page 65 96 mm x 200 mm x 47 mm (3.75 in x 7.9 in x 1.86 in) Weight 650 gm (1 lb, 7 oz) Entity Parameters For Entity Parameters, Refer to Fluke 725Ex CCD, Control Drawing for use in Ex hazardous areas. Fluke-Direct .com info@Fluke-Direct.com...

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