Hioki CM4142-20 Manual de usuario

Instruction Manual

Aug. 2019 Revised edition 1

CM4141A961-01 19-08H

CM4141

CM4142

AC CLAMP METER

Instruction Manual

Aug. 2019 Revised edition 1

CM4141A961-01 19-08H

CM4141

CM4142

AC CLAMP METER

Operating Precautions

WARNING

Your instrument can be used to measure voltages in excess of 1000 V

DC if and only if both of the following conditions are satisfied:

1. The circuit under measurement is isolated from the commercial

power grid.

2. The circuit under measurement is isolated from ground.

e.g.: when measuring the no-load voltage of an ungrounded PV panel

Do not use the instrument with circuits whose terminal-to-ground voltage

exceeds 1000 V. Doing so may result in electric shock.

CM4141A961-01

Index

Contents

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

Notations ........................................................................................................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

Switching the range............................................................................18

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

Filter Function.....................................................................................20

Rush current (AC INRUSH)................................................................21

2.3 Other Measurement Functions...........................................................22

Contents

2.4 Backlight /Auto Power Save (APS)..................................................... 26

2.5 Power-on Option Table.......................................................................27

2.6 Bluetooth®Communications (only for model CM4142) ......................29

3 Specications 35

3.1 GeneralSpecications .......................................................................35

3.2 Inputspecications/Measurementspecications ...............................37

3.3 Accuracy Table ...................................................................................44

4 Repairs,Inspections,andCleaning 59

4.1 Troubleshooting..................................................................................59

4.2 Error display ....................................................................................... 61

4.3 Insert/Replace Batteries.....................................................................62

4.4 Cleaning .............................................................................................64

Index 65

WarrantyCerticate

Introduction

Thank you for purchasing the Hioki CM4141, CM4142 AC 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.

• IOS is a registered trademark of Cisco Systems, Inc. and/or its afliates in the United States

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.

Notations

Concerning Safety

In this document, the risk seriousness and the hazard levels are classied as follows.

DANGER

Indicates an imminently

hazardous situation that will

result in death or serious injury to

the operator.

IMPORTANT

Indicates information related to

the operation of the instrument or

maintenance tasks with which the

operators must be fully familiar.

WARNING

Indicates a potentially hazardous

situation that may result in death

or serious injury to the operator.

Indicates prohibited actions.

CAUTION

Indicates a potentially hazardous

situation that may result in minor

or moderate injury to the operator

or damage to the instrument or

malfunction.

Indicates an action that must be

performed.

Symbols Afxed to the Instrument

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.

Notations

Screen display

The instrument screen displays the alphanumeric characters as follows.

1 2 3 4 5 6 7 8 9 0

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z A different display is used in the case

below.

: Wiring break detected

Other

Indicates a buzzer sound (either intermittent or continuous).

Accuracy

We dene measurement tolerances in terms of f.s. (full scale), rdg. (reading) and dgt. (digit) values with the

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

the digital display to show a “1” as the least-signicant digit.

Verifying Package Contents

Model CM4141 or CM4142

AC Clamp Meter

Model L9207-10 Test Lead

9243 graber L4937 マグネットアダプ

タ

L4934 小ワニグチ

マグネ付ストラップ

L9207-10

DM4910 熱電対

DT4911TestLead

DT4912TestLead

L4930 接続ケーブル

L4931renketu

L4931 延長ケーブル

L4932(+9207-10cap)

L4933 コンタクトピン

L4935 ワニ口

L4936 バスバー

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 CM4142)

* Instruction manuals may also be available in other languages.

Please visit our website at http://www.hioki.com

Este manual sirve para los siguientes modelos

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