Hioki 9754 User manual

EN
9754
CLAMP ON NOISE SENSOR
Instruction Manual
May 2015 Revised edition 3
9754A981-03 15-05H

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Contents
Contents
Introduction ...............................................................1
Verifying Package Contents......................................1
Safety Information.....................................................2
Operating Precautions ..............................................4
Chapter 1 Overview 9
1.1 Product Overview........................................9
1.2 Names and Functions of Parts..................10
Chapter 2 Measurement 11
2.1 Measurement Procedure...........................13
2.2 Disconnecting the NOISE SENSOR .........15
2.3 When Connecting to Instruments other
than the 3145-20 .......................................16
Chapter 3 Specifications 19
Chapter 4 Maintenance and Service 23
4.1 Cleaning ....................................................23
4.2 Troubleshooting.........................................24
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9754A981-03

Contents
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Thank you for purchasing the HIOKI "Model 9754 CLAMP ON
NOISE SENSOR." To obtain maximum performance from the
instrument, please read this manual first, and keep it handy for
future reference.
This device is a sensor for use with a 3145-20 NOISE HiLOG-
GER. Please carefully read the instruction manual included with
the NOISE HiLOGGER and follow all safety precautions.
The 9754 CLAMP ON NOISE SENSOR can also be connected
to other waveform measuring equipment and used to monitor
waveforms and current. Be sure to read and follow all safety
precautions included in the instruction manual of whichever
measuring instrument you use.
When you receive the instrument, inspect it carefully to ensure
that no damage occurred during shipping. If damage is evident,
or if it fails to operate according to the specifications, contact
your dealer or Hioki representative.
Package Contents
Introduction
Verifying Package Contents
Model 9754 CLAMP ON NOISE
SENSOR.......................... 1 Instruction Manual
...........................1

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This manual contains information and warnings essential for
safe operation of the instrument and for maintaining it in safe
operating condition. Before using it, be sure to carefully read the
following safety precautions.
Safety Information
This instrument is designed to comply with
IEC 61010 Safety Standards, and has been
thoroughly tested for safety prior to ship-
ment. However, mishandling during use
could result in injury or death, as well as
damage to the instrument. Be certain that
you understand the instructions and precau-
tions in the manual before use. We disclaim
any responsibility for accidents or injuries not
resulting directly from instrument defects.
Safety Symbols
In the manual, the symbol indicates particularly
important information that the user should read
before using the instrument.
The symbol printed on the instrument indicates
that the user should refer to a corresponding topic in
the manual (marked with the symbol) before
using the relevant function.
Indicates that only insulated conductors suited to the
voltage of the circuit under test can be measured.
Indicates AC (Alternating Current).

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The following symbols in this manual indicate the relative impor-
tance of cautions and warnings.
The following symbols in this manual indicate the relative impor-
tance of cautions and warnings.
Indicates that incorrect operation presents an
extreme hazard that could result in serious
injury or death to the user.
Indicates that incorrect operation presents a
significant hazard that could result in serious
injury or death to the user.
Indicates that incorrect operation presents a
possibility of injury to the user or damage to
the instrument.
Indicates advisory items related to perfor-
mance or correct operation of the instrument.
Symbols for various standards
This symbol indicates that the product conforms to
regulations set out by the EC Directive.
Indicates the Waste Electrical and Electronic Equip-
ment Directive (WEEE Directive) in EU member
states.
Other Symbols
Indicates a prohibited action.
(p. ) Indicates the location of reference information.
*Indicates that descriptive information is provided
below.

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Before using the instrument the first time, verify that it operates
normally to ensure that the no damage occurred during storage
or shipping. If you find any damage, contact your dealer or Hioki
representative.
Operating temperature and humidity: 0 to 40C (32 to 104F),
80%RH or less (no condensation)
Accuracy guarantee for temperature and humidity: 23 5C (73
9F), 80%RH or less (no condensation)
Operating Precautions
Preliminary Checks
Operating Environment
Avoid the following locations that could cause an accident or
damage to the instrument.
Exposed to di-
rect sunlight
Exposedto high
temperature
In the presence
of corrosive or
explosive gases
Exposed to liq-
uids
Exposedto high
humidity or con-
densation
Exposed to
strong electro-
magnetic fields
Near electro-
magnetic radia-
tors

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Exposed to high
levels of particu-
late dust Subject to vibra-
tion
Handling the Instrument
• To avoid damage to the instrument, protect it
from physical shock when transporting and han-
dling. Be especially careful to avoid physical
shock from dropping.Be especially careful to
avoid physical shock from dropping.
• Keep the clamp jaws and core slits free from for-
eign objects, which could interfere with clamping
action.
• Keep the clamp closed when not in use, to avoid
accumulating dust or dirt on the mating core sur-
faces, which could interfere with clamp perfor-
mance.
• To avoid breaking the cables, do not bend or pull
them.

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