Hioki CM4142-20 User manual
EN
EN
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
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6
5
4
3
2
1
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
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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 Specications 35
3.1 GeneralSpecications .......................................................................35
3.2 Inputspecications/Measurementspecications ...............................37
3.3 Accuracy Table ...................................................................................44
4 Repairs,Inspections,andCleaning 59
4.1 Troubleshooting..................................................................................59
4.2 Error display ....................................................................................... 61
4.3 Insert/Replace Batteries.....................................................................62
4.4 Cleaning .............................................................................................64
Index 65
WarrantyCerticate
1
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 afliates 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.
2
Notations
Notations
Concerning Safety
In this document, the risk seriousness and the hazard levels are classied 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 Afxed 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.
3
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 dene 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-signicant digit.
4
Verifying Package Contents
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
This manual suits for next models
2
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