Amplitude modulation
The amplitude of a high frequency carrier frequency is modulated with a low frequency oscillating signal. Example: inductive position measurement in which the high frequency from an oscillator is modulated
Calibrating throttles
Devices with a defined form and dimensions as per DIN 1952 and which are used to measure air flows. They may take the form of an orifice ( a ), nozzle ( b ) or Venturi nozzle ( c ) ( Figure N 5) .
Gap filter
Filter consisting of a set of fine metal discs with a defined distance and which also determines the maximum filtration grade (Figure M 23). The gap filter is one of the surface filters , i.e. it has a
Instruction
Statement containing what is to be done with which data. There are computational instructions, control and transmission instructions, as well as instructions to the peripherals. They usually comprise addresses
Dynamic characteristics of continuously adjustable valves
adjustable valves that describe their . above all this is the: and/ or frequency response behaviour with amplitude response and phase-frequency response . Characteristic points of these functions are the
Load pressure difference
or . It is referred to as positive if the inlet pressure is higher than the return line pressure. With synchronizing cylinders , the load pressure difference is equivalent to the load pressure p L.
Control computer
devices, Monitoring safety measures, Supervising the production process by measuring relevant variables with subsequent corrections, Diagnostics in the case of an error, amongst others
Displacement chamber machines
machines whereby the displacement units are generally pistons moved in a linear manner such as a pump with banked pistons/in-line piston pump , displacement chamber pump, axial piston machine , radial piston
Initial sealing performance
action of the related seal shape at very low pressure. The initial sealing performance is increased with increasing pressure due to the automatic sealing .
Spherical cone
Pump piston with a spherical piston surface, which contains piston rings for sealing. The piston shaft is lowered ( Figure S 75 ). The spherical piston is used in axial piston machines, in which the cylinder