Pressure control
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.
Automatic retrim
operations that are necessary for the re-optimisation of can be defined in schemas and described by formula-based relationships. In this way they can be transferred to a microcomputer that then automatically
Continuous value
the signal parameter can assume all values of an interval (e.g. all voltage values between -10 and +10 V if the voltage is the signal parameter) (DIN 19 225).
Phosphate ester
based on esters of phosphates. It belongs to the group known as HFD fluids ; its fire resistance is can be explained by its molecular structure.
Drag indicator
gauge , which has the task of displaying the maximum pressure incurred in a system. The drag indicator can be reset using a control knob.
Modular design
is when functional units or even physical units are associated with a defined type of behaviour and can be linked together based on defined rules (EDIN 19 226, Part 5).
Telescopic connection
Arrangement of two pipes which are sealed off against one another and can be axially adjusted into one another. Telescopic connections are used with axially movable cylinders in place of hoses.
System order
small that they can be ignored. Therefore, in most cases the systems will be 1st, 2nd or 3rd order. A 1st order system has only one energy store (e.g. mass to be accelerated). They can only be used in [...] in hydraulic systems if the compressibility of the oil can be ignored (e.g. under favourable circumstances in the case of copy or following control valves ). A 2nd order system has two energy stores, consisting
Control unit
Device, which brings about the programmed cycle of all control functions in cyclical sequence and can be connected via a bus line with all inputs, outputs, functional units and the program memory.
Unloading valve
the drain if the pilot pressure exceeds a value defined by the adjusting spring. An unloading valve can also be used as a pump idle circulation valve .