Hioki CM4371-50 User manual

CM4371-50
CM4373-50 Instruction Manual
AC/DC CLAMP METER
EN
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
EN
Dec. 2021 Edition 1
CM4371C961-00 21-12H
Read carefully before use.
Keep for future reference.
CM4375-50
www.hioki.com/
www.hioki.com/
HIOKI CM4371C961-00

HIOKI CM4371C961-00

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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
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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
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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
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Contents
HIOKI CM4371C961-00

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Introduction
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

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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.
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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.
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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