Two Beam Differential Fork Light Barriers

Differential fork light barriers are unique in that they use two light beams to perform the sensor process. If one beam is sensing something slightly different than the second beam, a differential signal is created. This difference allows the detection of even minimal remission differences (diffuse reflection); like the detection of films that are very thin and/or as clear as glass. Available in three fork openings: 30, 50, and 90 mm. Ideally suited for labelling applications, packaging machines, and paper conversion.