When the control valve is in reverse action then how much is the current at 15PSI?

Field Instrumentation
1

How much will be the current, if the control valve is in 15PSI at reverse action

2

Reverse action means Air To Open or Fail Close.

As we know range pressure is 3 ~ 15 PSI.

0 % = 4 mA = 3 PSI

100 % = 20 mA = 15 PSI.

If Pressure Output from Positioner to Pneumatic Control Valve 15,5 PSI

The current Valve will be 20.6 mA.