771 Milliamp Process Clamp Meter

Calibration Manual

November 2007 2007 Fluke Corporation, All rights reserved. Printed in USA. Product specifications are subject to change without notice. All product names are trademarks of their respective companies.

LIMITED WARRANTY AND LIMITATION OF LIABILITY

This Fluke product will be free from defects in material and workmanship for 3 years (one year for cable and clamp) from the date of purchase. This warranty does not cover fuses, disposable batteries or damage from accident, neglect, misuse or abnormal conditions of operation or handling. Resellers are not authorized to extend any other warranty on Flukes behalf. To obtain service during the warranty period, send your defective Meter to the nearest Fluke Authorized Service Center with a description of the problem.

THIS WARRANTY IS YOUR ONLY REMEDY. NO OTHER WARRANTIES, SUCH AS FITNESS FOR A PARTICULAR PURPOSE, ARE EXPRESSED OR IMPLIED. FLUKE IS NOT LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR CONSEQUENTIAL DAMAGES OR LOSSES, ARISING FROM ANY CAUSE OR THEORY. Since some states or countries 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.

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 To register your product online, visit http://register.fluke.com

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Table of Contents

Title Page Introduction........................................................................................................ 1 Contacting Fluke................................................................................................ 2 Safety Information ............................................................................................. 2 Symbols ............................................................................................................. 3 Specifications..................................................................................................... 4 Getting Acquainted with the Meter.................................................................... 5 Maintenance....................................................................................................... 6

Cleaning the Meter ........................................................................................ 6 Battery Replacement ..................................................................................... 6

Performance Tests.............................................................................................. 8 Required Equipment ...................................................................................... 8 Testing the Batteries ...................................................................................... 8 Testing the Display........................................................................................ 9 Display Hold Test.......................................................................................... 9 Backlight Test................................................................................................ 9 Spotlight LED Test........................................................................................ 9 Zero Test........................................................................................................ 9 Accuracy Tests .............................................................................................. 9

Calibration Adjustment...................................................................................... 11 Adjustment Subroutines ................................................................................ 11 Front Panel Operation for Adjustment .......................................................... 11 Calibration Error Messages ........................................................................... 12 Calibration Adjustment Procedure ................................................................ 12 Temperature Adjustment Procedure.............................................................. 13 Low Range Adjustment Procedure................................................................ 13 High Range Adjustment Procedure ............................................................... 13 Phase Adjustment Procedure ......................................................................... 14

User Replaceable Parts ...................................................................................... 15

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List of Tables

Table Title Page

1. Symbols.................................................................................................................. 3 2. Required Equipment............................................................................................... 8 3. Accuracy Tests ....................................................................................................... 10 4. Error Messages....................................................................................................... 12 5. Replaceable Parts ................................................................................................... 15

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List of Figures

Figure Title Page

1. The 771 Milliamp Process Clamp Meter ............................................................... 5 2. Changing the Batteries ........................................................................................... 7 3. Display Test ........................................................................................................... 9 4. Accessing the Calibration Button........................................................................... 12 5. Phase Adjustment................................................................................................... 14 6. Replaceable Parts ................................................................................................... 16

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771 Milliamp Process Clamp Meter

Introduction XW Warning

To avoid electric shock or personal injury, do not perform the calibration verification tests or calibration procedures described in this manual unless you are qualified to do so. The information provided in this manual is for the use of qualified personnel only.

This manual provides the complete verification and adjustment procedure for the 771 Milliamp Process Clamp Meter (referred to in this manual as the Meter). The Meter allows closed-case calibration using reference sources. It measures the reference signals, calculates the correction factors, and stores them in memory. The instrument should be calibrated after repair, or if it fails a performance test. The 771 Calibration Manual provides the following information: Precautions and safety information Specifications Basic maintenance Calibration verification procedure Replaceable parts and accessories

For complete operating instructions, refer to the 771 Instruction Sheet.

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Contacting Fluke To contact Fluke, call: 1-888-993-5853 in USA 1-800-363-5853 in Canada +31-402-675-200 in Europe +81-3-3434-0181 in Japan +65-738-5655 in Singapore +1-425-446-5500 from anywhere in the world Or, visit Flukes Web site at www.fluke.com To register your product, visit http://register.fluke.com

Safety Information 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 test instrument. The design and manufacture of the device conforms to the latest state of technology and the safety standards specified in IEC 61010-1/ 2nd edition. If used improperly, there is a risk of damage to persons and property.

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

Read this manual before use and follow all safety instructions.

Use the Meter only as specified in this manual; otherwise, the Meter's safety features may be impaired.

Before each use inspect Meter and cable for damage. Look for cracks and missing portions of the clamp and cable. Do not use if clamp is damaged.

Use caution when working with voltages above 33 V rms 47 V peak or 70 V dc these voltages pose a shock hazard.

Do not use to measure ac current. Do not use to measure dc mA in circuits carrying more

than 300 V CAT II.

Avoid working alone so assistance can be rendered in an emergency.

Use extreme caution when working around bare conductors or bus bars. Contact with the conductor could result in electric shock.

To avoid false readings that can lead to electrical shock and injury, replace the batteries as soon as the low battery indicator (B) appears.

Adhere to local and national safety codes. Individual protective equipment must be used to prevent shock and arc blast injury where hazardous live conductors are exposed.

Milliamp Process Clamp Meter Symbols

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When measuring, keep fingers behind the Tactile Barrier. See Figure 1.

Not for use with non-insulated conductors.

WCaution To avoid damage to the Meter, do not open the Meter for cleaning. Do not use solvents to clean it, and do not immerse it in liquid.

Symbols Table 1 explains the symbols that are used on the Meter or in this manual.

Table 1. Symbols

- Do not apply around, or remove from HAZARDOUS LIVE conductors

W Risk of danger. Important information. See Users M