Fluke 87 III Series Service Information
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Fluke 87 III Series Service Information

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Fluke 87 III Specs
Provided by www.AAATesters.com
®
80 Series III
Multimeters
Service Information
PN 688645 April 1998 Rev.2, 6/02
© 1998-2002 Fluke Corporation, All rights reserved. Printed in U.S.A.
All product names are trademarks of their respective companies.

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  • Page 1 Fluke 87 III Specs Provided by www.AAATesters.com ® 80 Series III Multimeters Service Information PN 688645 April 1998 Rev.2, 6/02 © 1998-2002 Fluke Corporation, All rights reserved. Printed in U.S.A. All product names are trademarks of their respective companies.
  • Page 2 Lifetime Limited Warranty Each Fluke 20, 70, 80, 170 and 180 Series DMM will be free from defects in material and workmanship for its lifetime. As used herein, “lifetime” is defined as seven years after Fluke discontinues manufacturing the product, but the warranty period shall be at least ten years from the date of purchase.

  • Page 3: Table Of Contents

    Table of Contents Title Page Introduction ....................... 1 Precautions and Safety Information ..............2 International Symbols..................2 Safety Information..................... 3 Specifications ....................4 Accuracy ....................... 4 General ......................4 AC Voltage Specifications (Models 85 and 87) ........... 5 AC Voltage Specifications (Model 83)............5 DC Voltage, Resistance, and Conductance Specifications......
  • Page 4 80 Series III Service Manual Testing the mV DC Function ................ 19 Testing the Resistance Function ..............19 Testing the Capacitance Function..............20 Checking the Diode Test Function..............20 Testing the Milliamp (mA) Function ............21 Testing the Microamp (µA) Function ............21 Testing the Amp (A) Function ..............
  • Page 5 List of Tables Table Title Page International Symbols .................... 2 Required Tools and Equipment ................9 Rotary Switch Test ....................16 AC Voltage Test ....................16 Frequency Test....................... 17 Frequency Counter Sensitivity and Trigger Level Tests ........18 DC Voltage Test ....................18 Peak MIN MAX Test.....................
  • Page 6 80 Series III Service Manual...
  • Page 7 List of Figures Figure Title Page Disassembly Details....................10 Battery and Fuse Replacement ................11 Testing the Current Input Fuses................12 Display Test ......................15 Calibration Adjustment Points................24 Replaceable Parts....................26...
  • Page 8 80 Series III Service Manual...

  • Page 9: Introduction

    For complete operating instructions, refer to the 80 Series III Users Manual. To contact Fluke, call: USA: 1-888-99-FLUKE (1-888-993-5853) Canada: 1-800-36-FLUKE (1-800-363-5853) Europe: +31 402-678-200 Japan: +81-3-3434-0181 Singapore: +65-738-5655 Anywhere in the world: +1-425-446-5500 For additional information about Fluke, its products, and services, visit Fluke’s web site www.fluke.com...

  • Page 10: Precautions And Safety Information

    80 Series III Service Information Precautions and Safety Information Use the Meter only as described in the Users Manual. If you do not do so, the protection provided by the Meter may be impaired. Read the “Safety Information” page before servicing this product. In this manual, a Warning identifies conditions and actions that pose hazard(s) to the user;...

  • Page 11: Safety Information

    Multimeters Safety Information Safety Information WWarnings and Precautions To avoid possible electric shock or personal injury, and to avoid possible damage to the Meter or to the equipment under test, follow these guidelines: • Before using the Meter inspect the case. Do not use the Meter if it is damaged. Look for cracks or missing plastic.

  • Page 12: Specifications

    80 Series III Service Information Specifications Accuracy Accuracy is given for a period of one year after calibration, at 18 °C to 28 °C, with relative humidity up to 90 % as: ±([% of reading] + [number of least significant digits]) For Model 87 in the 4 ½-digit mode, multiply the number of least significant digits (counts) by 10.

  • Page 13: Ac Voltage Specifications (Models 85 And 87)

    Multimeters Specifications AC Voltage Specifications (Models 85 and 87) Function Range Resolution Accuracy 50-60 Hz 45 Hz - 1 kHz 1-5 kHz 5-20 kHz ±(0.7 % + 4) ±(1.0 % + 4) ±(2.0 % + 4) ±(2.0 % + 20) 400.0 mV 0.1 mV ±(0.7 % + 2)

  • Page 14: Current Specifications

    80 Series III Service Information Current Specifications Accuracy Burden Model 83 Model 85 Model 87 Voltage Function Range Resolution (typical) mA \ ±(1.2 % + 2) ±(1.0 % + 2) ±(1.0 % + 2) 40.00 mA 0.01 mA 1.8 mV/mA ±(1.2 % + 2) ±(1.0 % + 2) ±(1.0 % + 2)

  • Page 15: Frequency Counter Sensitivity And Trigger Levels

    Multimeters Specifications Frequency Counter Sensitivity and Trigger Levels Minimum Sensitivity (RMS Sinewave) Approximate Trigger Level (DC Voltage Function) Input Range 5 Hz - 20 kHz 0.5 Hz - 200 kHz 400 mV dc 70 mV (to 400 Hz) 70 mV (to 400 Hz) 40 mV ...

  • Page 16: Electrical Characteristics Of The Terminals

    80 Series III Service Information Electrical Characteristics of the Terminals Overload Protection 1000 V rms Input Impedance (nominal): 10 MΩ<100 pF Common Mode Rejection Ratio: >120 dB at dc, 50 Hz or 60 Hz (1 kΩ unbalance) Normal Mode Rejection: >60 dB at 50 Hz or 60 Hz Overload Protection 1000 V rms...

  • Page 17: Basic Maintenance

    Basic Maintenance Table 2. Required Equipment Equipment Required Characteristics Recommended Model Calibrator AC Voltage Range: 0-1000V ac Fluke 5500A Multi-Product Accuracy: ±0.12 % Calibrator or equivalent Frequency Range: 60-20000 Hz Accuracy: ±3 % DC Voltage Range: 0-1000V dc Accuracy: ±0.012 % Current Range: 350 µA-2A...

  • Page 18: Removing And Reinserting The Circuit Board Assembly

    80 Series III Service Information Align Tab to off ek7f.eps Figure 1. Disassembly Details Removing and Reinserting the Circuit Board Assembly Once the case has been opened, the shields can be disconnected from the circuit board assembly as follows: 1. Remove the one Phillips-head screw securing the back shield to the circuit assembly. Then remove the back shield.

  • Page 19: Reassembling The Meter Case

    Multimeters Basic Maintenance IY12.eps Figure 2. Battery and Fuse Replacement Reassembling the Meter Case To reassemble the Meter Case, do the following: 1. Verify that the rotary switch and circuit board switch are in the position, and that the gasket remains secured to the case bottom. 2.

  • Page 20: Testing Fuses (F1 And F2)

    80 Series III Service Information Testing Fuses (F1 and F2) To test the internal fuses of the Meter, refer to Figure 3 and do the following: 1. Turn the rotary selector switch to the ReE position. 2. To test F2, plug a test lead into the Vinput terminal, and touch the probe to input terminal.

  • Page 21: Replacing Fuses

    Multimeters Basic Maintenance Replacing Fuses WWarning To avoid electrical shock, remove the test leads and any input signals before replacing the battery or fuses. To prevent damage or injury, INSTALL ONLY quick acting fuses with the following Amp/Volt current interrupt ratings: F1 Fuse: 0.440 A, 1000 V, FAST.

  • Page 22: Rotary Switch

    Blow these parts dry with clean, dry air. 4. Using a Q-tip, apply a thin film of W. F. Nye Gel Lubricant, #813S (Fluke PN 926084), to the entire surface of the ptf pattern and the hole in the center of the pattern.

  • Page 23: Testing The Display

    Multimeters Performance Tests 3. Then test the mA µA input fuse (0.440 A) by inserting the plug end of the test lead mA µA into the input. The beeper emits an Input Alert tone if the fuse is good. If the Meter fails to operate properly: •...

  • Page 24: Testing The Ac Voltage Function

    80 Series III Service Information Table 3. Rotary Switch Test Rotary Switch Position Display (±12) Rotary Switch Position Display (±12) Continuity/Ohms V ac Diode test -128 V dc mA/A -160 µA mV dc -192 Testing the AC Voltage Function To verify accuracy in the ac voltage ranges, do the following: 1.

  • Page 25: Testing The Frequency Function

    Multimeters Performance Tests Testing the Frequency Function To verify the accuracy of the Meter’s frequency function, do the following: 1. Connect the Calibrator to the Vand COM inputs on the Meter. Note The accuracy of the Calibrator’s frequency function must be appropriate for the specified accuracy of the Meter.

  • Page 26: Testing Dc Voltage

    80 Series III Service Information Table 6. Frequency Counter Sensitivity and Trigger Level Tests Step Range Amplitude (RMS) Frequency Display Reading 4 V ac 300 mV ac 1 kHz 999.8 - 1000.2 4 V dc 1.7 V ac 1 kHz 999.8 - 1000.2 4 V dc 1.0 V ac...

  • Page 27: Testing The Mv Dc Function

    Multimeters Performance Tests 6. Compare the reading on the Meter display to the display reading for step 1 in Table 8. If the display reading falls outside of the range shown in Table 8, the Meter does not meet specification. 7.

  • Page 28: Testing The Capacitance Function

    80 Series III Service Information Table 9. Ohms Tests Display Reading Step Resistance 83 III 85 III 87 III To zero resistance in leads, short probes and press REL ∆. short 190.0Ω 189.0 to 191.0 189.4 to 190.6 189.4 to 190.6 19.00 kΩ...

  • Page 29: Testing The Milliamp (Ma) Function

    Multimeters Performance Tests Note If you use a Fluke 5100 Series Calibrator, activate the 50 Ω divider override. 3. Apply 3.000 V. The Meter display should read 3.000 V dc +/- 0.061 V dc. Testing the Milliamp (mA) Function To verify the accuracy of AC and DC current measurement functions, do the following: mA µA...

  • Page 30: Testing The Amp (A) Function

    80 Series III Service Information 7. For each input, compare the readings on the Meter display to the display readings for your Model of Meter. Table 12. µA Tests Display Reading Step DC Current 83 III 85 III 87 III 350.0 µA 348.2 to 351.8 348.9 to 351.1...

  • Page 31: Calibration

    Multimeters Calibration Calibration Calibrate the Meter once a year to ensure that it performs according to specifications. Calibration adjustment points are identified in Figure 5. There is a slightly different calibration procedure for each model of the 80 Series III. Be sure to follow the correct procedure for your unit.
  • Page 32 80 Series III Service Information ek6f.eps Figure 5. Calibration Adjustment Points...

  • Page 33: Calibrating The Model 83 Iii

    Btm Case w/gasket 8x-w/ce/csa 616703 MP92 Battery Door-CE update 609930 CD-ROM (contains Users Manuals) 1611720 Getting Started Manual 1611712 Quick Reference Guide, Fluke 80 Series III 688168 Service Information Manual 688645 Optional Backlight Backlight, White 609922 LCD, 4.5 digit, bar graph, multiplexed...
  • Page 34 C81Y Holster, Yellow C81Y  C81G Holster, Gray (Optional) C81G  Carrying Case, Soft (Optional) * Fluke accessories are available from your authorized Fluke distributor. MP85 AC70A Alligator Clips T24 Test Lead Set AC20 Alligator TP1, TP4 Probes Clip (Black)

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