Hioki CM4371-50 Bedienungsanleitung

CM4371-50

CM4373-50 Instruction Manual

AC/DC CLAMP METER

Dec. 2021 Edition 1

CM4371C961-00 21-12H

Read carefully before use.

Keep for future reference.

CM4375-50

CM4371-50

CM4373-50 Instruction Manual

AC/DC CLAMP METER

Dec. 2021 Edition 1

CM4371C961-00 21-12H

Read carefully before use.

Keep for future reference.

CM4375-50

www.hioki.com/

HIOKI CM4371C961-00

CM4371C961-00

Contents

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

Notations.....................................................................................................................2

Checking Package Contents .....................................................................................7

Options........................................................................................................................8

Safety Information....................................................................................................11

Operating Precautions.............................................................................................12

1 Overview 17

1.1 Product Overview and Features ..........................................................17

1.2 Part Names ............................................................................................18

2 Making Measurements 19

2.1 Inspection Before Measurement..........................................................19

2.2 Installing Batteries and the Z3210 Wireless Adapter.........................20

Installation procedure ............................................................................................23

2.3 Use of Test Leads..................................................................................25

L9300 Test Lead (accessory).................................................................................27

HIOKI CM4371C961-00

Contents

2.4 Current Measurement ...........................................................................30

Manual hold, automatic hold..................................................................................32

Switching the ranges .............................................................................................36

Filter function .........................................................................................................37

Maximum value, minimum value, average, and peak value ..................................38

Inrush current (inrush) ...........................................................................................39

2.5 Various Other Measurement Functions ..............................................40

2.6 LCD Backlight, Automatic Power Save (APS) ....................................44

2.7 DC High V Probe Mode .........................................................................45

2.8 Wireless communications function.....................................................49

Using GENNECT Cross.........................................................................................49

Z3210-to-Excel®direct data entry function

(Excel®direct input function, HID function) ............................................................53

2.9 Rotary Switch Combinations ...............................................................57

3 Specications 59

3.1 GeneralSpecications .........................................................................59

3.2 InputSpecications,MeasurementSpecications ...........................63

3.3 Accuracy table.......................................................................................74

HIOKI CM4371C961-00

iii

Contents

4 Maintenance and Service 107

4.1 Troubleshooting ..................................................................................107

4.2 Error and Operation Displays ............................................................109

4.3 Cleaning ...............................................................................................110

Index 111

WarrantyCerticate 115

HIOKI CM4371C961-00

Contents

HIOKI CM4371C961-00

Introduction

Thank you for choosing the Hioki CM4371-50/CM4373-50/CM4375-50 AC/DC Clamp Meter.

To ensure your ability to get the most out of this instrument over the long term, please read this

manual carefully and keep it available for future reference.

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

Latest edition of instruction manual

The contents of this manual are subject to change, for example as a result of

product improvements or changes to specications.

The latest edition can be downloaded from Hioki’s website.

https://www.hioki.com/global/support/download

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).

HIOKI CM4371C961-00

Notations

Trademarks

• Microsoft Excel is a registered trademark or a trademark of Microsoft Corporation in the

United States and other countries.

• The Bluetooth®word mark and logos are registered trademarks owned by Bluetooth SIG, Inc.

and any use of such marks by Hioki E.E. Corporation is under license. Other trademarks and

trade names are those of their respective owners.

Notations

Safety notations

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

DANGER

Indicates an imminently

hazardous situation that, if not

avoided, will result in death or

serious injury.

Indicates an action that must not

be performed.

WARNING

Indicates a potentially hazardous

situation that, if not avoided, could

result in death or serious injury.

Indicates an action that must be

performed.

HIOKI CM4371C961-00

Notations

CAUTION

Indicates a potentially hazardous

situation that, if not avoided, could

result in minor or moderate injury.

Indicates a high-voltage hazard.

Failure to verify safety or improper

handling of the instrument could

lead to electric shock, burn injury,

or death.

NOTICE

Indicates potential risks of damage

to the supported product (or to

other property).

Indicates the presence of a hazard

caused by a strong magnet. The

product could interfere with the

proper operation of electronic

medical devices such as

pacemakers.

IMPORTANT

Indicates information or content

that is particularly important from

the stand point of operating or

maintaining the instrument.

HIOKI CM4371C961-00

Notations

Symbols shown on the instrument

Indicates the presence of a potential hazard. For more information about locations where this

symbol appears on instrument components, see the "Operating Precautions" (p. 12) and

the accompanying document entitled “Operating Precautions.”

Indicates that a dangerous voltage is generated from this terminal.

Indicates that the product can be attached or detached while the circuit is live.

Indicates the instrument is protected throughout by double insulation or reinforced insulation.

Indicates alternating current (AC).

Indicates direct current (DC).

Indicates the grounding terminal.

HIOKI CM4371C961-00

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