Hioki RM3545, Instruction Manual, Page: 19 / 364

Operating Precautions
11
Before Connecting the Temperature Sensor
Failure to fasten the connectors properly may result in sub-specifica-
tion performance or damage to the equipment.
Note the following precautions to avoid damaging the instrument:
•
To keep from damaging the instrument or temperature sensor, turn off the
instrument’s main power switch before connecting the sensor.
•
Connect the temperature sensor by inserting the plug all the way into the
TEMP.SENSOR jack. A loose connection can cause a large error compo-
nent in measured values.
•
If the temperature sensor jack becomes dirty, wipe it clean. The presence of
dirt will cause an error in temperature measured values.
•
When connecting the temperature sensor, do not connect anything to the
TEMP.ANALOG INPUT terminal block. Doing so may cause erroneous
measured values to be displayed.
Before Connecting the Thermometer
•
Note that thermometer circuit is grounded. To avoid electric shock
accidents or damage to the instrument, do not connect an analog out-
put thermometer to the TEMP.ANALOG INPUT terminal block that has
any potential offset from ground.
•
Failure to fasten the connectors properly may result in sub-specifica-
tion performance or damage to the equipment.
Note the following precautions to avoid damaging the instrument:
•
Before connecting a thermometer to the instrument, confirm that any power
to the instrument and thermometer is turned OFF.
•
Allowable input voltage from an analog thermometer is 0 to 2 V (between
terminal contacts). Do not apply voltage exceeding this range.
•
With thermometers providing 4 to 20 mA output, connect a shunt resistance
of about 50
Ω
before connecting, and convert the resulting voltage.
•
When connecting the thermometer, do not connect anything to the
TEMP.SENSOR jack. Doing so may cause erroneous measured values to
be displayed.