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Controller combination in which the setpoint Q for the flow rate controller and the setpoint p for the pressure controller are pre-defined electrically on proportional valves. In this way the performa

Flow that is produced in the gap between two chambers with different pressures p 1 and p 2.

Shock in the pressure fluid due to the release of kinetic energy if the flow rate suddenly stops (e.g. due to closing a valve or a piston moving against a stop). The pressure wave produced in this man

Change in the pressure in a device or a system as a function of pre-defined control signals. The pressure control can be undertaken by switching processes or continuously.

Range in which the "pressure" output signal at a given inlet pressure is controlled by a continuously adjustable valve (E DIN 24 311).

Pressure pulse that can go beyond the calculated pressure (DIN 24 312).

in which only one physical variable (e.g. distance or pressure or speed), the controlled variable , is fed back (Figure E 8) .

Time a system requires to reach the steady operating state from the switched off state.

Specific time and force required on the actuated valve. The switch-on characteristic is different on DC and AC solenoids . On average the DC solenoid switches a factor of 3 times slower than an AC sol

Time from the "on" switching command to the "off" switching command. Of a solenoid : ratio of the switch-on time to the duration of a working cycle in %. The ratio of load to relief time is termed the