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Hydraulic circuit which is predominantly used in mobile hydraulics . Its distinguishing feature is how the directional valves connected one behind the other in the centre position for the oil flow are

Valve that can shut-off the flow in both directions. In fluid technology this valve is implemented in the form of a seated valve or ball valve . The valve is actuated manually, magnetically or using a

Frequency with which a system left to itself oscillates after an external excitation ( damped natural oscillation ). For a 2nd order oscillatory delay element (e.g. spring-mass system, hydraulically f

Test dust for undertaking the multipass test according to ISO 4572. The quantities of the individual particle sizes are defined. In this way a consistent contamination basis for all multipass tests is

functional workflow, in which the reference variable has only a slightly different frequency and/or amplitude from the static condition over time.

Unit in a computer system that permits operators to monitor and influence the operation of the computer system or its parts. Examples for such actions are bootstrapping programs , monitoring devices,

This parameter, which would be very important for the user, depends on so many boundary conditions that it can, at best, be estimated if the operating conditions are known.

Graphic representation of the error as a function of the output (indication). The error behaviour can also be defined in a table (Figure F 5) (VDI 2600).

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

Oscillation in a pressure fluid that is caused by pressure pulsation.