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3.3 Measuring Temperature
3.3-1 Using Thermocouples
The calibrator supports the
following thermocouple types: B,
C, E, J, K, L, N, R, S, T, U, BP,
and XK. The characteristics of all
the types are described in
Specifications section. The
calibrator also has a Cold
Junction Compensation (CJC) function. Normally this function
should be ON and the actual temperature of the thermocouple will
be measured. With CJC OFF, the calibrator will measure the
difference between the thermocouple at the junction and at its TC
input terminal.
Note:
CJC off mode should only be used when calibration is being
done using an external ice bath.
To use the thermocouple to measure temperature, follow these
steps:
1. Attach the thermocouple leads to the TC miniplug, and insert the
plug into the input/output of the calibrator, as in Figure 7.
Note:
For best accuracy wait 2 to 5 minutes for the temperature
between the miniplug and the calibrator to stabilize before any
measurements are taken.
2. Switch to lower display from Main Menu.
3. Select TC from the primary parameters. Choose [IN] in the input/
output control, and than the thermocouple type from the sensor
types. The temperature unit may also be changed from Celsius
to Fahrenheit.
The calibrator can also measure the mV of a Thermocouple, which
can be used along with a table in case the corresponding TC type is
not supported by the calibrator. To do so, proceed as above and
choose mV from sensor types.
Figure 7. Measuring Temperature Using Thermocouple Terminals
Note:
The TC wire
used must match the
thermocouple type
being calibrated.
Summary of Contents for PCL1200
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