Electronic Level

How to calibrate yokogawa pneumatic level transmitter?

which is install sea water open tank,transmitter output going to p to i transducer.in dcs showing i.o.p what's the reason,and how to troubleshoot.pls help me.

You should request maintenance and calibration instructions from Yokogawa, directly. In any case, you are beating around the bush with this.

If you need a current output, instead of pneumatic, you should install an electronic level transmitter, directly.

Also, if it is an open tank, you should install a 'bubbler' with a 'p to i' transducer, i.e., use compressed air to bubble air from the bottom of the tank, and measure the pressure required.

Going back to the calibration of a low pressure transmitter, all linear transmitters have two adjustments zero and gain. Locate them.

Then, input the full range level to the high pressure port with a water or mercury column, and adjust the gain accordingly, measuring the output with another column.

.

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