Plug-in connection
Connection for hoses in accordance with DIN 20 043, which is quick to fit without the use of tools and can be detached.
Slider
the control piston (control spool) of a valve. The expression is also used for directional valves with valve control spools ().
Flow rate-dependent pressure loss
Pressure difference as a function of the flow rate , e.g. for the reversed flow rate direction on valves with bypassing check valve:
Two-point controller
Non-continuous controller with two switching positions. The output signal can only take on 2 different values (neglecting the switching processes). Multi-position controller
Limit monitor
Compares the value of an input variable with a limit. If this limit is exceeded or dropped below, the limit signal changes (DIN 19 237).
Directional valve
Fluid valve with binary behaviour, i.e. it moves from one switching position to another (e.g. Open – Closed) without adopting an intermediate position.
Parameter setting
The assignment of parameter values to modules in a or control system with a view to a producing a desired behaviour (DIN 19 226, Part 5).
Frequency response for set input
Mathematical description of a follow up control in which, with the aid of the frequency response method, the transient response is determined (Figure F 36) .
Anharmonic oscillation
All oscillations which are not harmonic, i.e. which are not periodic sine oscillations with a given frequency. A typical form of anharmonic oscillation is noise .
Combined piston
Disc-shaped piston with a vulcanised double pot seal or the like and combining the functions of a piston, piston guide and seal (Figure K 24) .