Protective glass shields are needed if the surface of transmitters and receivers need to be protected against strong abrasion caused by aggressive media like sandblasting, bulk solids or sharp-edged particles.

Light shutters offer the possibility of detecting very small objects. Placed on transmitter and receiver the effective beam diameter is focused on 1 mm. Furthermore, they provide protection against abrasion of the sensors.

Light shutters with protective glass shields prevent the clogging of the bore by fine dust or dirt located at the light shutter. All presented apertures on this page can be screwed onto sensors with M12 thread. An o-ring seal is included.