ASM WS31 linear position sensor

The WS31 linear position sensor series from ASM offers measuring ranges of 250 and 500 mm and includes a mounting bracket that allows for easy and flexible installation of the sensor and thus position measurement in almost every direction.

The series operates on the reliable cable extension position sensor principle that uses a highly flexible stainless steel cable that is drawn onto a cable drum. An internal spring maintains the tension in the cable and ensures that the cable is recoiled exactly as a single layer on the drum. The output signal is proportional to the length of the cable that has been pulled out of the sensor by the moving object. The series is available with an analog R1K, 4-20 mA or digital incremental encoder A/B/Z output.

This position sensor can be installed with many different orientations with the included mounting brackets or threaded spacer nuts. The flexible design of the sensor’s housing allows the sensor to be rotated and mounted in 90 degree increments with the use of metal brackets.

The enclosure rating for the sensor housing is IP50 and has a linearity rating of ±0.35% of the full scale measuring range. The sensor weighs less than 115 g.