For measuring angular positions and converting them into electrical signals for teletransmission purposes, either potentiometric (see data sheet »precision rotary potentiometer«), inductive, magnetic, incrementally or absolutely coded angular position transducers can be used according to the particular application.
Inductive angular position transducers of the non-contacting type are preferably used on measuring points, which are exposed to extreme vibration or shock or to aggressive atmospheres.
This applies mainly to measurement problems one is confronted with in energy industry and chemical plants, for instance while measuring the actual value of the position of variable speed drives, or of machines in paper-processing and textile industry, while measuring the position of dancer rollers and very frequently in pendulum systems for measuring tilt angles on cranes and excavators.
Optoelectronic angular position transducers possess code disks, whose tracks are digitally scanned.
They are high-resolution measuring systems with low temperature coefficient, available in a single- or multi-turn version, outputting analogue or digitally coded signals.
Single-turn transducers are used e. g. in the railway vehicle domain in connection with master controllers or on cranes as slewing ring transmitters.
Multi-turn transducers are preferably used together with rope length measuring systems on hauling plants, bearer cable winches of crane systems or in the field of machine tool engineering for sensing the tool position.
Magnetic angular position transducers are extremely robust measuring systems completely hermetically encapsulated of twochamber design with a protection degree of IP 68.
In shaft exit design e. g. they are used to record the angular position of a permanent magnet mounted on the measuring object.