Source
4-11
IM CA150E
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App
4.5.2 Using an External RJ Sensor
Use an RJ sensor to measure (detect) the temperature of the device under
calibration, and compensate the thermoelectric emf.
The instrument outputs (generates) the compensated value.
When calibrating a device with a built-in reference junction temperature
compensator, connect an optional RJ sensor (model: B9108WA) to
the instrument (RJ sensor connector). (RJON appears.)
CA150 unit
RJ sensor (B9108WA)
To prevent electrical shock,
be sure to use the dedicated
R.J.Sensor B9108WA only.
WARNING
CA150
H
L
Device under
calibration
(thermometer)
Lead cable
External RJ sensor
Calibration of thermometer
CA150
H L
SOURCE
H L
SOURCE
H
L
Device under
calibration
(thermometer)
Thermocouple
External RJ sensor
Calibration including use of thermocouple
The generation operating procedure is identical to that described in
"4.5.1 Generating Thermocouple (TC) Signals."
For details on using the RJ sensor built into the instrument,
refer to "4.5.3 Using the Built-in RJ Sensor."
• Compensation of the output voltage using the temperature measured
(detected) with the RJ sensor is executed at a sampling rate of
approximately 10-second intervals. (This means that there is a delay of
up to 10 seconds before the first compensation starts after
the external RJ sensor is connected to the connector of the instrument.)
• To perform accurate measurement, leave enough time for the temperature
to stabilize after connecting the RJ sensor to the instrument.
4.5 Source Thermocouple (TC) Signals
