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Overview
The instrument uses the 4-terminal method to measure the
following resistance values quickly and with a high degree of
precision:
• Weld resistance in batteries, motors, and other devices
• Winding resistance in motors, transformers, and other
devices
• Contact resistance in relays and switches
• Pattern resistance on printed circuit boards
• DC resistance of fuses, resistors, conductive rubber, and
other materials
Since the instrument incorporates a temperature correction
function, it is particularly well suited to the measurement
of targets whose resistance values vary with temperature.
It also provides features such as a comparator function,
communications, external control, and a multiplexer*
it to be used in a wide range of applications, including in
development work and on production lines.
*1. The RM3545A-2 can be used for multiplexer-related control.
Symbols and Abbreviations
In this manual, the risk seriousness and the hazard levels are
classified as follows.
Safety notations
Indicates an imminently hazardous
DANGER
situation that, if not avoided, will result in
death or serious injury.
Indicates a potentially hazardous situation
WARNING
that, if not avoided, could result in death or
serious injury.
Indicates a potentially hazardous situation
that, if not avoided, could result in minor
CAUTION
or moderate injury or potential risks of
damage to the supported product (or to
other property).
Indicates a prohibited action.
Indicates an action that must be
performed.
Symbols on the instrument
Indicates the presence of a potential
hazard. For more information about
locations where this symbol appears
on instrument components, see the
"Precautions for Use" section, warning
messages listed at the beginning
of operating instructions, and the
accompanying document entitled
"Operating Precautions".
Safety Information
This instrument is designed to conform to International
Standard IEC 61010 and has been thoroughly tested for safety
prior to shipment. However, using the instrument in a way
not described in this manual may negate the provided safety
features.
Before using the instrument, be sure to carefully read the
following safety precautions.
Familiarize yourself with the instructions and
„
precautions in this manual before use.
Failure to do so could cause improper use of the
instrument, resulting in serious bodily injury or
damage to the instrument.
If you have not used any electrical
„
measuring instruments before, you should
be supervised by a technician who has
experience in electrical measurement.
Failure to do so could cause the operator to
experience an electric shock. Moreover, it could cause
1
, allowing
serious events such as heat generation, fire, and an
arc flash due to a short-circuit.
Precautions for Use
Instrument installation
Do not install the instrument in locations
„
such as the following:
• In locations where it would be subject to direct sunlight
or high temperatures
• In locations where it would be exposed to corrosive or
explosive gases
• In locations where it would be exposed to powerful
electromagnetic radiation or close to objects carrying
an electric charge
• Close to inductive heating devices (high-frequency
inductive heating devices, IH cooktops, etc.)
• In locations characterized by a large amount of
mechanical vibration
• In locations where it would be exposed to water, oil,
chemicals, or solvents
• In locations where it would be exposed to high
humidity or condensation
• In locations with an excessive amount of dust
The instrument may be damaged or malfunction,
resulting in bodily injury.
Be sure to place the instrument with enough
„
space provided around the instrument so
that the power can be cut off by unplugging
the power in an emergency.
• Leave at least the specified space on every surface to keep
the instrument's temperature from rising.
• Place the instrument with its bottom side.
50 mm or more
HIOKI RM3545E965-00
4
DANGER
WARNING
WARNING
50 mm or more
10 mm or more
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