Hioki CM4141 User manual

EN
EN
Instruction Manual
Feb. 2019 Edition 1
CM4141A961-00 19-02H
CM4141
CM4142
AC CLAMP METER
Instruction Manual
Feb. 2019 Edition 1
CM4141A961-00 19-02H
CM4141
CM4142
AC CLAMP METER

i
6
5
4
3
2
1
Index
CM4141A961-00
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

ii
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

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 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.

2
Notations
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.

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 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.

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

5
Options (sold separately)
Options (sold separately)
C0203 Carrying Case
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
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
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
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
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
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
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
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
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
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
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)
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
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

6
Usage Notes
Usage Notes
Follow these precautions to ensure safe operation and to obtain the full benets of the various
functions. Read the separate document “Operating Precautions” carefully before using the
instrument. Ensure that your use of the product falls within the specications not only of the
instrument itself, but also of any accessories, options, batteries, and other equipment being
used.
DANGER
•To prevent an electric shock, do not touch any areas beyond the barrier
while the instrument is in use.
See: “Part Names” (p.12)
•The maximum measurement current varies with the frequency, and the
current that can be measured continuously is limited. Operating the
instrument at less than this limitation is referred to as derating. Do not
measure currents in excess of the derating curve. Doing so may result in
instrument damage or malfunction, a re, or burn due to sensor heating.
•Never apply a voltage to the instrument when the resistance, continuity
check, diode check, capacitance, or temperature functions are selected.
Damage to the instrument can cause bodily injury. To avoid electrical
accidents, turn off the circuit before measuring it.