Fluke ProcessMeter 789 Calibration Manual
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Fluke ProcessMeter 789 Calibration Manual

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789/787B
ProcessMeter™
Calibration Manual
September 2002, Rev. 2, 1/17
© 2002-2017 Fluke Corporation. All rights reserved. Specifications are subject to change without notice.
All product names are trademarks of their respective companies.

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Summary of Contents for Fluke ProcessMeter 789

  • Page 1 789/787B ProcessMeter™ Calibration Manual September 2002, Rev. 2, 1/17 © 2002-2017 Fluke Corporation. All rights reserved. Specifications are subject to change without notice. All product names are trademarks of their respective companies.
  • Page 2 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.

  • Page 3: Table Of Contents

    Table of Contents Title Page Introduction ......................1 How to Contact Fluke ..................1 Safety Information ....................2 Specifications ..................... 5 Required Equipment ..................9 Basic Maintenance ..................... 10 How to Clean ....................10 Battery Replacement ..................10 Battery Life ..................... 11 Check and Replace Fuses................
  • Page 4 789/787B Calibration Manual How to Restore the Default Password ............35 Meter Keys Used in the Calibration Steps ..........36 Calibration Adjustment ................36 Replacement Parts and Accessories ..............38...

  • Page 5: Introduction

    All illustrations in this manual show the 789. For complete operating instructions, refer to the 789/787B ProcessMeter Users Manual (provided on CD-ROM with the Product). How to Contact Fluke To contact Fluke, call one of the following telephone numbers: • Technical Support USA: 1-800-44-FLUKE (1-800-443-5853) •...

  • Page 6: Safety Information

    789/787B Calibration Manual Safety Information A Warning identifies conditions and procedures that are dangerous to the user. A Caution identifies conditions and procedures that can cause damage to the Product or the equipment under test. International symbols used on the Meter and in this manual are explained in Table 1. ...
  • Page 7 ProcessMeter™ Safety Information • Remove all probes, test leads, and accessories before the battery door is opened. • Remove all probes, test leads, and accessories that are not necessary for the measurement. • Do not exceed the Measurement Category (CAT) rating of the lowest rated individual component of a Product, probe, or accessory.
  • Page 8 789/787B Calibration Manual Table 1. International Symbols Symbol Description Symbol Description WARNING. HAZARDOUS   WARNING. RISK OF DANGER. VOLTAGE. Risk of electric shock. Conforms to relevant South Korean   Consult user documentation. EMC Standards Conforms to European Union ...

  • Page 9: Specifications

    ProcessMeter™ Specifications Specifications • All specifications apply from +18 °C to +28 °C unless stated otherwise. • All specifications assume a 5-minute warm-up period. • The standard specification interval is 1 year. Note “Counts” refers to the number of increments or decrements of the least significant digit.
  • Page 10 789/787B Calibration Manual AC Current Measurement Range Accuracy, Typical Burden Resolution ±(% of Reading + Counts) 45 Hz to 2 kHz Voltage 1.000 A (Note) 0.001 A 1 % + 2 1.5 V/A Note: 440 mA continuous, 1 A 30 seconds maximum Specifications are valid from 5 % to 100 % of amplitude range.
  • Page 11 ProcessMeter™ Specifications Frequency Counter Sensitivity Minimum Sensitivity (rms Sinewave) 5 Hz to 5 kHz* Input Range (approximate trigger level 5 % of full scale) 400 mV 150 mV (50 Hz to 5 kHz) 150 mV 40 V 400 V 40 V 40 V 1000 V 400 V...
  • Page 12 789/787B Calibration Manual General Specifications Maximum Voltage between any Terminal and Earth Ground ......1000 V Fuse Protection for mA inputs ............... 0.44 A, 1000 V IR 10 kA Power Battery Type ............IEC LR6 (AA Alkaline) Quantity ............... 4 Temperature Operating ............

  • Page 13: Required Equipment

    Unless otherwise indicated, all connection diagrams for the calibration verification tests in this manual showing a calibrator or digital multimeter use a Fluke 5522A calibrator, Fluke 8508A Reference Multimeter, Keysight 3458A DMM, or equivalent. If you are using a different calibrator or DMM, make the connections appropriate for that instrument.

  • Page 14: Basic Maintenance

    789/787B Calibration Manual Basic Maintenance How to Clean  Warning To prevent electrical shock or damage, never allow water inside the case of the ProcessMeter. If the ProcessMeter requires cleaning, wipe it down with a cloth that is lightly dampened with water or a mild detergent.

  • Page 15: Battery Life

    ProcessMeter™ Basic Maintenance anw037.eps Figure 1. Replacing the Batteries and Fuses Battery Life  Warning To prevent possible electrical shock, fire, or personal injury, replace the batteries when the low battery indicator shows. The ProcessMeter is powered by four AA alkaline batteries. Table 3 shows typical alkaline battery life.

  • Page 16: Check And Replace Fuses

    789/787B Calibration Manual Check and Replace Fuses  Warning To prevent possible electrical shock, fire, or personal injury, use only the specified replacement fuses. Both current input jacks are fused with separate 440 mA fuses. To determine if a fuse is blown: 1.

  • Page 17: Preparation

    ProcessMeter, and knows how to operate the required equipment. Note Calibration verification tests for the ProcessMeter can be performed  manually, or they can be computer-automated (using Fluke’s MET/CAL Calibration Software). This document provides the procedures necessary to perform the calibration verification test manually. Preparation Note Throughout the calibration verification tests, “UUT”...

  • Page 18: Loop Power Test (789 Only)

    789/787B Calibration Manual Loop Power Test (789 only) 1. Enable the dc volts autorange function of the multimeter. 2. Turn the rotary knob of the UUT to LOOP POWER. 3. Measure the open circuit voltage of the UUT and verify it is >29.2 V and <32 V. 4.

  • Page 19: Current Sourcing Test

    ProcessMeter™ Performance Verification Current Sourcing Test 1. Put the calibrator in Standby (STBY) mode. 2. Connect the SOURCE + (A) and − (mA) terminals on the UUT to the current terminals on the multimeter as shown in Figure 3. 3. Put the multimeter in the dc mA mode and manually select the 100 mA range. (Do not allow the multimeter to autorange.) X position.

  • Page 20: Current Measurement Test

    789/787B Calibration Manual Current Measurement Test 1. Put the calibrator in Standby (STBY) mode. 2. Put the UUT rotary switch in the position. 3. Connect the calibrator to the COM and mA terminals on the UUT as shown in Figure 4. 4.

  • Page 21: Diode Function Test

    ProcessMeter™ Performance Verification Table 5. DC mA Test Calibrator Minimum Acceptable Maximum Acceptable 789 Range DC Current Reading Reading No Range Switching 4.000 mA 3.996 mA 4.004 mA No Range Switching 12.000 mA 11.992 mA 12.008 mA No Range Switching 20.000 mA 19.988 mA 20.012 mA...
  • Page 22 789/787B Calibration Manual PROCESSMETER 100% MIN MAX RANGE HOLD 5522A 5520A CALIBRATOR NORMAL SCOPE V, , ,RTD A, -SENSE, AUX V PREV STBY EARTH EXGRD SCOPE MENU µ EDIT SETUP RESET FIELD TRIG ¡F ¡C GUARD MEAS MORE MODES POWER MULT •...

  • Page 23: Continuity Function Test

    ProcessMeter™ Performance Verification Continuity Function Test 1. Put the calibrator in Standby (STBY) mode, and turn the UUT rotary switch to the position.  2. Connect the calibrator to the COM and terminals on the UUT as shown in Figure 6. 3.

  • Page 24: Resistance Measurement Test

    Compare the readings on the UUT to the acceptable readings shown. 5. Change the connections to the UUT. Using the Fluke 5440A-7002 low thermal leads, connect the calibrator to the UUT as shown by the solid lines in Figure 7.
  • Page 25 ProcessMeter™ Performance Verification Table 8. Resistance Measurement Test Calibrator Calibrator Minimum Maximum Range Resistance Compensation Mode Reading Reading 400 Ω 120 Ω 119.6 Ω 120.4 Ω 2-Wire 400 Ω 300 Ω 299.2 Ω 300.8 Ω 2-Wire 4 kΩ 1.2 kΩ 2-Wire 1.197 kΩ...

  • Page 26: Dc Millivolts Measurement Test

    789/787B Calibration Manual DC Millivolts Measurement Test 1. Put the calibrator in Standby (STBY) mode. 2. Put the UUT rotary switch in the position.  3. Connect the calibrator to the COM and terminals on the UUT as shown in Figure 8.

  • Page 27: Dc Volts Measurement Tests

    ProcessMeter™ Performance Verification DC Volts Measurement Tests  Warning To prevent possible electrical shock, fire, or personal injury: • Some of the calibration verification tests involve the use of high voltages and should be performed by qualified personnel only. • Always place the calibrator in the Standby (STBY) mode between tests and before handling the test connections or test cables.

  • Page 28: Ac Volts Measurement Test

    789/787B Calibration Manual Table 10. DC Volts Test Range Calibrator DC Voltage Minimum Reading Maximum Reading 4 V dc 0.998 V 1.002 V 4 V dc 2.996 V 3.004 V 40 V dc 10 V 9.98 V 10.02 V 40 V dc 30 V 29.96 V 30.04 V...

  • Page 29: Frequency Measurement Test

    ProcessMeter™ Performance Verification Frequency Measurement Test 1. Put the calibrator in Standby (STBY) mode. 2. Put the UUT rotary switch in the  (ac volts) position. 3. Press h to toggle to the frequency measurement function.  4. Connect the calibrator to the COM and terminals on the UUT as shown in Figure 10.

  • Page 30: Calibration Adjustment

    Inspect the test leads and test connections for damaged insulation or exposed metal. • Look for cracks, missing plastic or damaged insulation. If damage is detected, do not continue; contact Fluke to have the ProcessMeter serviced. • Make sure that the battery compartment door on the ProcessMeter is closed and latched before using it.

  • Page 31: Procedure For Models With Firmware Version <2.0

    ProcessMeter™ Calibration Adjustment Note The calibration adjustment procedures assume that the person performing them knows how to use the ProcessMeter and the required equipment. Do not attempt to calibrate the ProcessMeter unless you are qualified to do so. Calibration adjustment should be performed in an RF field <1 V/m such as a laboratory environment.

  • Page 32: Frequency Adjustment

    789/787B Calibration Manual Calibration Button aau04f.eps Figure 11. Calibration Button Access Frequency Adjustment 1. Connect the ProcessMeter to the volt/ohm output of the 5522A calibrator. 2. Turn the UUT’s switch to S. 3. Push h. 4. Press and hold the Calibration Button for approximately 2 seconds. The unit will beep (see Figure 11).

  • Page 33: Dc Voltage Adjustment

    ProcessMeter™ Calibration Adjustment DC Voltage Adjustment 1. Connect the ProcessMeter to the volt/ohm output of the 5522A calibrator. 2. Turn the UUT’s switch to T. 3. Press and hold the Calibration Button for approximately 2 seconds. The unit will beep (see Figure 11).

  • Page 34: Ohms Adjustment

    789/787B Calibration Manual Ohms Adjustment 1. Connect the ProcessMeter to the volt/ohm output of the 5522A calibrator. 2. Turn the UUT’s switch to 3. Press and hold the Calibration Button for approximately 2 seconds. The unit will beep (see Figure 11). Note Pressing the Calibration Button puts the ProcessMeter into and out of calibration mode.

  • Page 35: Milliamps Dc Adjustment

    ProcessMeter™ Calibration Adjustment Milliamps DC Adjustment 1. Connect the ProcessMeter to the mA output of the 5522A calibrator. 2. Turn the UUT’s switch to . Make sure the test leads are in the mA  and COM inputs. 3. Press and hold the Calibration Button for approximately 2 seconds. The unit will beep (see Figure 11).

  • Page 36: Amps Ac Adjustment

    789/787B Calibration Manual Amps AC Adjustment 1. Connect the ProcessMeter to the A output of the 5522A calibrator. 2. Turn the UUT’s switch to 3. Press J (BLUE) to enter the A ac function. 4. Press and hold the Calibration Button for 2 seconds (see Figure 11). The unit will beep.

  • Page 37: Procedure For Models With Firmware Version ≥2.0

    ProcessMeter™ Calibration Adjustment ≥ Procedure for Models with Firmware Version Calibration Adjustment Counter The Meter contains a calibration adjustment counter. The counter is incremented each time a Calibration Adjustment Procedure is completed. The value in the counter can be recorded and used to show that no adjustments have been made during a calibration cycle.
  • Page 38 789/787B Calibration Manual  Static Awareness  Semiconductors and integrated circuits can be damaged by electrostatic  discharge during handling. This notice explains how to minimize damage to these components. 1. Understand the problem. 2. Learn the guidelines for proper handling. 3.

  • Page 39: How To Restore The Default Password

    ProcessMeter™ Calibration Adjustment How to Restore the Default Password Warning To avoid electrical shock or personal injury, remove the test leads and any input signal before removing the back case from the UUT. If the calibration password is forgotten, the default password () can be restored with these steps: 1.

  • Page 40: Meter Keys Used In The Calibration Steps

    789/787B Calibration Manual Meter Keys Used in the Calibration Steps The Meter keys behave as follows when performing the Calibration Adjustment Procedure. This may be of help determining why a calibration step is not accepted and for determining the input value without referring to Table 6. Press and hold to show the measured value.
  • Page 41 ProcessMeter™ Calibration Adjustment Note Set the calibrator to Standby prior to changing the function switch position and/or after completing adjustment of each function. If the calibration adjustment procedure is not completed correctly, the UUT will not operate correctly.  Caution Remove 1 A from UUT promptly after storing calibration constant.

  • Page 42: Replacement Parts And Accessories

    • Use only specified replacement parts. Replacement parts and some accessories are shown in Figure 13 and listed in Table 14. Many more DMM accessories are available from Fluke. For a catalog, contact the nearest Fluke distributor. To find out how to order parts or accessories use the telephone numbers or addresses shown in "Contacting Fluke."...
  • Page 43 ProcessMeter™ Replacement Parts and Accessories Table 14. Replacement Parts Fluke PN Item Fluke PN Fluke PN Description Quantity for 789 ≥V2 for 789 <V2 Number for 787B 658440  Knob Assembly with o-ring 4772670 Decal, Top Case 1623923  4772201 ...
  • Page 44 789/787B Calibration Manual...

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