The EWM-PQ-AA has been developed as a classic p/Q controller but it work well also with high response valves via an analogue command input for pressure and flow.

The p/Q controller automatically switches between Q and p control modes to assure that the set point limits for P has not to exceed.

The pressure feedback is analogue type.

The card use the RS232C interface, and is settable via notebook, using the software kit EWMPC.