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.