How to calibrate the range of a capacitive transformer?

2015-10-05View Original

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How to calibrate the range of a capacitive transformer?

Reply #22015-10-05

Connect the input terminal of the transmitter to a standard pressure source, and the output terminal to a standard ammeter. Enter the standard pressure value corresponding to the upper limit of the transmitter’s input; at this point, the output current of the transmitter will be 20mA. If that’s not the case, adjust the external range potentiometer. Then remove the pressure value; the transmitter will display 4mA. If that’s not correct, adjust the zeroing potentiometer. Next, input the maximum pressure value and check the output current value. Repeat this process a few times to make the adjustment.

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