Hioki CM4375 Bedienungsanleitung

Instruction Manual

Sept. 2018 Edition 1

CM4375A961-00 18-09H

CM4375

CM4376

AC/DC CLAMP METER

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Index

CM4375A961-00

Contents

Introduction.....................................................................................................1

Notation..........................................................................................................2

Verifying Package Contents ...........................................................................4

Options (sold separately)................................................................................5

Usage Notes...................................................................................................6

1 Overview 11

1.1 Product Overview and Features.........................................................11

1.2 Part Names ........................................................................................12

2 Making Measurements 13

2.1 Inspection Before Measurement ........................................................13

2.2 Current Measurement ........................................................................14

Manual Hold/Auto Hold......................................................................15

Filter Function.....................................................................................18

MAX value/MIN value/AVG value/PEAK value...................................19

Rush current (INRUSH)......................................................................20

2.3 Other Measurement Functions...........................................................21

2.4 Bluetooth®Communications (only for CM4376).................................25

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Contents

2.5 Backlight/Auto Power Save (APS).....................................................30

2.6 Power-on Option Table.......................................................................31

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3.3 Accuracy Table...................................................................................42

4 Repairs, Inspections, and Cleaning 57

4.1 Troubleshooting..................................................................................57

4.2 Error display.......................................................................................59

4.3 Insert/Replace Batteries.....................................................................60

4.4 Cleaning.............................................................................................61

Index 63

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Introduction

Thank you for purchasing the Hioki CM4375, CM4376 AC/DC Clamp Meter. To obtain maximum

performance from the instrument over the long term, be sure to read this manual carefully and

keep it handy for future reference.

Read the separate document “Operating Precautions” carefully before using the instrument.

Target audience

This manual has been written for use by individuals who use the product in question or who teach

others to do so. It is assumed that the reader possesses basic electrical knowledge (equivalent

to that of someone who graduated from the electrical program at a technical high school).

Trademark

Bluetooth®is a registered trademark of Bluetooth SIG, Inc.(USA). The trademark is used by

HIOKI E.E. CORPORATION under license.

Android, Google Play, and Google Chrome are trademarks of Google, Inc.

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and certain other countries.

iPhone, iPad, iPad miniTM, iPad Pro, and iPod touch are trademarks of Apple Inc.

The App Store is a service mark of Apple Inc.

Any other products and company names are generally either trade names, registered

trademarks or trademarks of respective companies.

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Notation

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Indicates cautions and hazards. Refer to the "Usage Notes" (p.6) section of the instruction

manual and the included “Operating Precautions” for more information.

Indicates that the instrument may be connected to or disconnected from a live conductor.

Screen display

The instrument screen displays the alphanumeric characters as follows.

1234567890

ABCDEFGH I JKLMNOPQRSTUVWXYZ

A different display is used in the case below.

: Wiring break detected

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Notation

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Accuracy

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following meanings:

f.s. (maximum display value/range)

The maximum displayable value. This is usually the name of the currently selected range.

rdg. (displayed value)

The value currently being measured and displayed on the measuring instrument.

dgt. (resolution)

The smallest displayable unit on a digital measuring instrument, i.e., the input value that causes

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Verifying Package Contents

Model CM4375 or CM4376

AC/DC Clamp Meter

Model L9207-10 Test Lead

Model C0203 Carrying Case

LR03 Alkaline battery ×2

Instruction Manual*

Operating Precautions (0990A907)

Precautions Concerning Use of

Equipment that Emits Radio Waves (only

for model CM4376)

* Instruction manuals may also be available in other languages.

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Options (sold separately)

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Options (sold separately)

C0203 Carrying Case

L4933 Contact Pin Set *6

L4934 Small Alligator Clip Set *5

L4935 Alligator Clip Set *2

9243 Grabber Clip *3

L4936 Bus Bar Clip Set *4

L4937 Magnetic Adapter Set *3

L4932 Test Pin Set *1

L9207-10 Test Lead *1

L4930 Connection Cable Set *2

(Length: 1.2 m)

L4931 Extension Cable Set *2

(Length: 1.5 m, with the coupling

connector)

DT4910 Thermocouples (K) L4938 Test Pin Set *7

L4939 Breaker Pin Set *4

9804 Magnetic Adapter *8

*1: CAT IV 600 V/ CAT III 1000 V/ CAT II 1000 V *5: CAT III 300 V/ CAT II 600 V

*2: CAT IV 600 V/ CAT III 1000 V *6: 33 V AC/ 70 V DC

*3: CAT III 1000 V *7: CAT III 600 V/ CAT II 600 V

*4: CAT III 600 V *8: CAT IV 1000 V

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Usage Notes

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functions. Read the separate document “Operating Precautions” carefully before using the

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instrument itself, but also of any accessories, options, batteries, and other equipment being

used.

DANGER

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See: "1.2 Part Names" (p.12)

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