Warranty
Warranty malfunctions occurring under conditions of normal
use in conformity with the Instruction Manual and Product Pre-
cautionary Markings will be repaired free of charge. This war-
ranty is valid for a period of one (1) year from the date of
purchase. Please contact the distributor from which you pur-
chased the product for further information on warranty provi-
sions.
Introduction
Thank you for purchasing the HIOKI Model 9675 CLAMP ON
LEAK SENSOR. To obtain maximum performance from the
product, please read this manual first, and keep it handy for fu-
ture reference.
The Model 9675 CLAMP ON LEAK SENSOR provides voltage
output corresponding to sensed currents up to 10A AC. The
high-permeability magnetic material of the sensor’s core and
magnetic shield enables high-precision measurement of very
weak currents.
Initial Inspection
When you receive the product, 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.
Maintenance and Service
• To clean the product, wipe it gently with a soft cloth moist-
ened with water or mild detergent. Never use solvents such
as benzene, alcohol, acetone, ether, ketones, thinners or
gasoline, as they can deform and discolor the case.
• If the product seems to be malfunctioning, contact your
dealer or Hioki representative. Pack the product so that it will
not sustain damage during shipping, and include a descrip-
tion of existing damage. We cannot accept responsibility for
damage incurred during shipping.
• Use the original packing materials when transporting the
product, if possible.
This manual contains information and warnings essential for
safe operation of the product and for maintaining it in safe oper-
ating condition. Before using it, be sure to carefully read the fol-
lowing safety precautions.
Safety Symbol
Symbols for various standards
The following symbols in this manual indicate the relative
importance of cautions and warnings.
Follow these precautions to ensure safe operation and to obtain
the full benefits of the various functions.
Overview
9675
CLAMP ON LEAK SENSOR
Instruction Manual
July 2015 Revised edition 8
Printed in Japan
9675A981-08 15-07H
Inspection and Maintenance
Safety
This product is designed to comply with IEC 61010
Safety Standards, and has been thoroughly tested for
safety prior to shipment. However, mishandling during
use could result in injury or death, as well as damage to
the product. Be certain that you understand the instruc-
tions and precautions in the manual before use. We dis-
claim any responsibility for accidents or injuries not
resulting directly from product defects.
Indicates cautions and hazards. When the symbol is
printed on the product, refer to a corresponding topic in the
Instruction Manual.
Indicates AC (Alternating Current).
Indicates that only insulated conductors suited to the volt-
age of the circuit under test can be measured.
This symbol indicates that the product conforms to regula-
tions set out by the EC Directive.
Indicates the Waste Electrical and Electronic Equipment
Directive (WEEE Directive) in EU member states.
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 device.
Advisory items related to performance or correct oper-
ation of the product.
Usage Notes
• Do not measure around a bare conductor. Doing so
may result in short-circuit or electric shock. Take mea-
surements at a location on an insulated wire where
there is sufficient insulation for the circuit voltage.
• This product should only be connected to the second-
ary side of a breaker, so the breaker can prevent an
accident if a short circuit occurs. Connections should
never be made to the primary side of a breaker,
because unrestricted current flow could cause a seri-
ous accident if a short circuit occurs.
• When the clamp sensor is opened, do not allow the
metal part of the clamp to touch any exposed metal, or
to short between two lines.
• To avoid electric shock, do not allow the product to get
wet, and do not use it when your hands are wet.
• To avoid electric shock when measuring live lines,
wear appropriate protective gear, such as insulated
rubber gloves, boots and a safety helmet.
• To avoid electric shock when measuring the ground
conductor on an E (PE) transformer connection site,
be careful not to approach high voltage devices or
conductors. Also, if close to high voltage charging
devices or if measurement is otherwise difficult, first
change the route of the grounding wire.
• Do not use the product where it may be exposed to
corrosive or combustible gases. The product may be
damaged or cause an explosion.
• Do not store or use the product where it could be exposed to
direct sunlight, high temperature or humidity, or condensa-
tion. Under such conditions, the product may be damaged
and insulation may deteriorate so that it no longer meets
specifications.
• To avoid damage to the product, protect it from vibration or
shock during transport and handling, and be especially care-
ful to avoid dropping.
• Be careful to avoid dropping the product or otherwise sub-
jecting them to mechanical shock, which could damage the
mating surfaces of the core and adversely affect measure-
ment.
• Keep the clamp jaws and core slits free from foreign objects,
which could interfere with clamping action.
• Keep the clamp closed when not in use, to avoid accumulat-
ing dust or dirt on the mating core surfaces, which could in-
terfere with clamp performance.
• Measurements are degraded by dirt on the mating surfaces
of the clamp-on sensor, so keep the surfaces clean by gently
wiping with a soft cloth.
• This product is not designed to be entirely water- or dust-
proof. To avoid damage, do not use it in a wet or dusty envi-
ronment.
• This product is designed for indoor use, and operates reli-
ably from 0°C to 50°C.
• This product should be installed and operated indoors only,
between 0°C and 50°C and 80% RH or less
• Avoid stepping on or pinching the cable, which could dam-
age the cable insulation.
• Keep the cables well away from heat sources, as bare con-
ductors could be exposed if the insulation melts.
• To avoid damaging the sensor cable, do not bend or pull the
cable.
• Note that the product may be damaged if current exceeding
the selected measurement range is applied for a long time.
Correct measurement may be impossible in the presence of
strong magnetic fields, such as near transformers and high-cur-
rent conductors, or in the presence of strong electromagnetic
fields such as near radio transmitters.
