Series 4050 background-suppression photoelectric sensors from Contrinex Inc., Old Saybrook, CT, have a 500 mm operating distance, a setting range from 20–500 mm, and a 40 by 50 by 15 mm housing. Operating distance is independent of the target color, shape, or surface structure and is set using a 3-turn potentiometer with position indication. Features include 500 Hz switching frequency, red light operation, and a quasi-linear output function with a <1 mm blind zone at 300 mm. Sensors have a glass window and a connector that may be adjusted from 0°–90°.
Photoelectric Sensors from Contrinex