Answer / manoj

First match zero of cv by callibrating zero error. If still the pressure transmitter/gauge shuffles value then there is passing in the valve

Answer / satya

give 100 % close command to cotrol valve if u phsically check valve is 100 % close the open the downstream drain valve if proces fluid comes then valve is passinf . if theie is flow transmitter before cv u can also check

Answer / harsh mehta

by zeigler nicols method,,,,,,we can do tht,bro

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