Fluke 189, 187 Service Manual

®

187/189

True RMS Multimeter

Calibration Manual

PN 1584337

November 2000 Rev.1, 6/02

© 2000-2002 Fluke Corporation. All rights reserved. Printed in U.S.A. All product names are trademarks of their respective companies.

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. This warranty does not cover fuses, disposable batteries, damage from neglect, misuse, contamination, alteration, accident or abnormal conditions of operation or handling, including failures caused by use outside of the product’s specifications, or normal wear and tear of mechanical components. This warranty covers the original purchaser only and is not transferable.

For ten years from the date of purchase, this warranty also covers the LCD. Thereafter, for the lifetime of the DMM, Fluke will replace the LCD for a fee based on then current component acquisition costs.

To establish original ownership and prove date of purchase, please complete and return the registration card accompanying the product, or register your product on http://www.fluke.com. Fluke will, at its option, repair at no charge, replace or refund the purchase price of a defective product purchased through a Fluke authorized sales outlet and at the applicable international price. Fluke reserves the right to charge for importation costs of repair/replacement parts if the product purchased in one country is sent for repair elsewhere.

If the product is defective, 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. Fluke will pay return transportation for product repaired or replaced in-warranty. Before making any non-warranty repair, Fluke will estimate cost and obtain authorization, then invoice you for repair and return transportation.

THIS WARRANTY IS YOUR ONLY REMEDY. NO OTHER WARRANTIES, SUCH AS FITNESS FOR A PARTICULAR PURPOSE, ARE EXPRESSED OR IMPLIED. 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. AUTHORIZED RESELLERS ARE NOT AUTHORIZED TO EXTEND ANY DIFFERENT WARRANTY ON FLUKE’S BEHALF. Since some states do not allow the exclusion or limitation of an implied warranty or of incidental or consequential damages, this limitation of liability may not apply to you. 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	Fluke Europe B.V.
P.O. Box 9090	P.O. Box 1186
Everett, WA 98206-9090	5602 BD Eindhoven
U.S.A.	The Netherlands

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Table of Contents

Title	Page
Introduction .......................................................................................................	1
Contacting Fluke ...............................................................................................	1
Precautions and Safety Information ..................................................................	2
International Symbols........................................................................................	2
Safety Information.............................................................................................	3
Specifications ....................................................................................................	4
Accuracy .......................................................................................................	4
Feature Summary ..........................................................................................	4
Basic Specifications ..........................................................................................	5
Detailed Accuracy Specifications .....................................................................	6
Frequency Counter Sensitivity ..........................................................................	9
Burden Voltage (A, mA, µA) ............................................................................	9
Input Characteristics..........................................................................................	9
Required Equipment..........................................................................................	10
Basic Maintenance ............................................................................................	11
Opening the Meter Case................................................................................	11
Removing and Reinserting the Circuit Board Assembly ..............................	11
Replacing the LCD........................................................................................	12
Reassembling the Meter Case .......................................................................	13
Testing Fuses (F1 and F2).............................................................................	13
Replacing Fuses ............................................................................................	14
Replacing the Batteries .................................................................................	14
Cleaning ........................................................................................................	15
Performance Tests .............................................................................................	16
Testing the Display .......................................................................................	16
Backlight Test ...............................................................................................	16
Current Terminal Sensing Test .....................................................................	16
Keypad Test ..................................................................................................	17
Verification of the IR Communication Port..................................................	17
Testing Temperature .....................................................................................	17
Testing Voltage, Current, Resistance, Capacitance and Diode Functions....	18
Calibration .........................................................................................................	21
Keypad Interface ...........................................................................................	21
General Procedure.........................................................................................	22
Special Requirements....................................................................................	23
Calibration Inputs..........................................................................................	23

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Calibration Manual

Remote Interface ...........................................................................................	25
Temperature Calibration ...............................................................................	25
Setup .........................................................................................................	25
Procedure ..................................................................................................	26
Re-Programming Serial Number or Model Number .....................................	26
Parts and Accessories ........................................................................................	27

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List of Tables

Table	Title	Page
1.	International Symbols ............................................................................................	2
2.	Required Tools and Equipment .............................................................................	10
3.	Temperature Test Input and Display .....................................................................	17
4.	Performance Test Steps .........................................................................................	18
5.	Calibration Inputs ..................................................................................................	23

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List of Figures

Figure	Title	Page
1.	Removing LCD Mask to Access LCD...................................................................	12
2.	Testing the Current Fuses ......................................................................................	14
3.	Battery and Fuse Replacement ..............................................................................	15
4.	Display Test ...........................................................................................................	16
5.	Locating Recessed Calibration Button ..................................................................	21
6.	Calibration Display................................................................................................	22
7.	Replacement Parts and Accessories.......................................................................	28

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Introduction

WWarning

To avoid shock or injury, do not perform the verification tests or calibration procedures described in this manual unless you are qualified to do so.

The information provided in this document is for the use of qualified personnel only.

Caution

The 187 & 189 Multimeters contain parts that can be damaged by static discharge.

Follow the standard practices for handling static sensitive devices.

The information in this manual deals with the Fluke Models 187 & 189 True RMS Multimeters, (hereafter referred to as “the meter”). Information provided includes:

∙Precautions and safety information

∙Specifications

∙Basic maintenance (cleaning, replacing the battery and fuses)

∙Performance test procedures

∙Calibration and calibration adjustment procedures

∙Accessories and replaceable parts

For complete operating instructions, refer to the Model 187 & 189 Users Manual located on the 187/189 CD ROM.

Contacting Fluke

To order accessories, receive assistance, or locate the nearest Fluke distributor or Service Center, call:

USA: 1-888-99-FLUKE (1-888-993-5853)

Canada: 1-800-36-FLUKE (1-800-363-5853)

Europe: [phone]

Japan: [phone]

Singapore: [phone]

Anywhere in the world: [phone]

Address correspondence to:
Fluke Corporation	Fluke Europe B.V.
P.O. Box 9090,	P.O. Box 1186,
Everett, WA 98206-9090	5602 BD Eindhoven
USA	The Netherlands

Visit us on the World Wide Web at: www.fluke.com

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Precautions and Safety Information

WWarning

If this product is used in a manner not specified by the manufacturer, the protection provided by the equipment 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; a Caution identifies conditions and actions that may damage the Meter or the test instruments.

International Symbols

International symbols used on the Meter and in this manual are explained in Table 1.

Table 1. International Symbols

Symbol	Meaning	Symbol	Meaning

Alternating current

Direct current

Alternating or direct current

Refer to the manual. Important information.

Inspected and licensed by TÜV Product Services.

Earth ground

Fuse

Conforms to European Union directives

Conforms to relevant Canadian Standards Association directives

Double insulated

Battery		Underwriters Laboratories, Inc.

Conforms to VDE Standards

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True RMS Multimeter

Safety Information

Safety Information

WWarnings and Precautions

To avoid possible electric shock or personal injury, follow these guidelines:

∙Do not use the Meter if it is damaged. Before you use the Meter, inspect the case. Look for cracks or missing plastic. Pay particular attention to the insulation surrounding the connectors.

∙Inspect the test leads for damaged insulation or exposed metal. Check the test leads for continuity. Replace damaged test leads before you use the Meter.

∙Do not use the Meter if it operates abnormally. Protection may be impaired. When in doubt, have the Meter serviced.

∙Do not operate the Meter around explosive gas, vapor, or dust.

∙Do not apply more than the rated voltage, as marked on the Meter, between terminals or between any terminal and earth ground.

∙Before use, verify the Meter’s operation by measuring a known voltage.

∙When measuring current, turn off circuit power before connecting the Meter in the circuit. Remember to place the Meter in series with the circuit.

∙When servicing the Meter, use only specified replacement parts.

∙Use caution when working above 30 V ac rms, 42 V peak, or 60 V dc. Such voltages pose a shock hazard.

∙Avoid working alone.

∙When using the probes, 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.

∙Remove test leads from the Meter before you open the battery door.

∙Do not operate the Meter with the battery door or portions of the cover removed or loosened.

∙To avoid false readings, which could lead to possible electric shock or personal injury, replace the batteries as soon as the low battery indicator (M) appears.

∙Use only type AA batteries, properly installed in the Meter case, to power the Meter.

Caution

To avoid possible damage to the Meter or to the equipment under test, follow these guidelines:

∙Disconnect circuit power and discharge all high-voltage capacitors before testing resistance, continuity, diodes, or capacitance.

∙Use the proper terminals, function, and range for your measurements.

∙Before measuring current, check the Meter's fuses and turn power OFF to the circuit before connecting the Meter to the circuit.

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