Calibrating A Transmitter - Ecom Instruments MCAL 4200 Instruction Manual

6.3 Calibrating a Transmitter

To calibrate a transmitter both the upper and the lower displays will be used; one for
measuring and the second a source. This section covers all but the pressure transmitters.
A thermocouple temperature transmitter is used in this example.
The following steps show how to calibrate a temperature transmitter:
1. From the Main Menu select upper display, and choose current loop [mA LOOP].
2. Switch to lower display from the Main Menu, and select [TC] from the primary parameters.
Choose output [OUT] from the input/output control, and select TC type.
3. Set the 0 % and 100 % span points using the keypad and the 0% and 100% keys (refer to
Setting 0 % and 100 % Parameters section).
4. Connect the calibrator to the transmitter as shown in Figure 21.
5. Test transmitter at 0%, 25%, 50%, 75%, 100 % using the 25 % step function (25% key).
Adjust the transmitter a necessary.
To calibrate a different transmitter, follow the above steps with the exception of choosing TC
on the lower display. Replace TC with the correct parameter for the transmitter.
Figure 20. Calibrating an I / P Device
Figure 21. Calibrating a Transmitter
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