Linear displacement sensor

Turck has introduced the Q25L sensor, a magnetically actuated linear displacement sensor designed to detect piston position on pneumatic cylinders.

Available with measuring ranges of 100, 125, 160 and 200 mm, the Q25L is suitable for applications that require precise signal transmission over long measuring distances, such as pneumatic pumps, slides, blanking or moulding systems. By utilising an external magnet as a position indicator, the sensor may be used in additional applications such as moving platforms, point line measurement or other specially designed equipment where a cylinder is not present.

The sensor detects the position of a piston on standard pneumatic cylinders by utilising a series of Hall elements that sense the piston magnet and send a signal back to the processor. The device has a repeat accuracy of <0.1% of the measuring range and a linear deviation of <1% of full scale. It also features a blind zone of only 20.5 mm on each end, making it easy to apply in space-restricted areas.