Turck Contactless Rotary Position Sensors

TURCK’s rotary inductive analog sensor operation is based on the RLC (Resistance Inductive
Capacitance) principle and incorporates an advanced microprocessor and precisely
positioned emitter and receiver coils on a printed circuit board.

The emitter coils are excited with a high frequency AC field. The interaction between the
moving position element and the receiver coils creates different voltages that are induced
into the receiver coils which determines the position of the target.

The tuned positioning element can be mounted in a number of ways, but because it is
contactless, there is no wear to the sensor or to the positioning element. Irregular rotating
shafts can cause vibration and offset of the positioning element. Because of the contactless
arrangement of the sensor and positioning element, there is a ≤ 3mm compensation of
lateral offset. The absence of a shaft and bearing enables easy adaption to many applications.