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

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

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.