Long-Range Metal Cylindrical Photoelectric Sensors

Long-range cylindrical metal photoelectric sensors are through-beam photoelectric sensors built for long openings, consisting of a transmitter and a receiver with M30 threaded metal housings and detecting an object when the beam between them is interrupted. They are used at wide doors and passages, on long conveyor lines and in warehouse aisles, where the transmitter and receiver are placed tens of meters apart. The category includes Lanbao PR30TL models with a 150 m sensing distance, 10-30 V DC supply and a 2 m cable; the product whose output type is a light source is the transmitter, and the product with a PNP/NPN NO/NC output is the receiver. Compare the opening between the transmitter and receiver with the product's sensing distance, the receiver's PNP/NPN and NO/NC output with your control input, and the supply voltage and cable length with your installation. Since a small angular deviation over a long distance can push the beam off the receiver, aligning the two units is important. They must not be confused with diffuse-reflective photoelectric sensors; in the through-beam type the transmitter and receiver are separate products, both are required for detection, and a supply cable is run to each of them.

Cylindrical Photoelectric Sensors Selection Guide: Technical Criteria and Engineering Practice