Draw-wire sensor from ASM

A cable pull sensor from ASM, also known as a cable pull displacement sensor, measures the position absolutely or incrementally using a stainless steel measuring cable. The measuring cable is wound onto a drum in a single layer. To determine the position, the cable pull sensors unwind this measuring cable from the drum against the retraction force of the spring motor. The unwinding process from the drum converts the linear movement of the displacement cable into an angular movement in the cable pull sensor. This angular movement is then recorded by an incremental encoder, an absolute encoder or a potentiometer and converted into an electrical output signal.