Martel Electronics DMC1400 - Manual (Page 16)

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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
3.3-2 Using Resistance-Temperature-Detectors (RTDs)
The supported types of RTDs are shown in Section 10.
Specifications. RTDs are characterized by their 0°C resistance, R0.
Note: The TC wire
used must match the
thermocouple type
being calibrated.