Plug amplifier 24 V DC, for proportional control valve »posiflow«, G 1/4 and G 3/8, Temperature range -10 °C to 75 °C. For converting the 0 to 10 V, 0 to 20 mA or 4 to 20 mA standard signal (settable) to an impressed current (0 to 1 A). The impressed current is pulse width modulated to ensure low-hysteresis, thermally stable control. With settable time ramp (ON/OFF, 0.1 to 3 s). The minimum and maximum supply current for the solenoid can be set according to the control signals.