Measuring Temperature - Ecom Instruments MCAL 4200 Instruction Manual

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
Figure 6. Measuring mA
with Input / Output Terminals
Note: The TC wire
used must match the
thermocouple type
being calibrated.
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