Through-Beam Rectangular Photoelectric Sensors

Through-beam rectangular photoelectric sensors consist of a transmitter that sends the light and a receiver that receives it, in two separate rectangular housings, and give an output when an object interrupts the beam between them. Because they reach longer distances than other sensing types, they are used on wide conveyors, in warehouse and vehicle passages, and in door and ramp applications. The category includes Lanbao branded models with sensing distances such as 10 m, 20 m, 40 m and 60 m, with 10-30 V DC or 24-240 V AC and 12-240 V DC supply. Products whose output type is listed as light source are the transmitter unit, while products with NPN, PNP or AC/DC 5-wire output are the receiver, and both are needed for one sensing point. Choose by comparing the sensing distance suited to the gap between transmitter and receiver, a supply voltage that can be brought to both sides, the receiver's output type and cable, terminal, or M8 or M12 connector connection. A through-beam photoelectric sensor should not be confused with a single-housing retroreflective photoelectric sensor; with the through-beam type, cable must be run to both sides.

Products

How to choose Through-Beam Rectangular Photoelectric Sensors

Through-beam rectangular photoelectric sensors consist of a transmitter that sends the light and a receiver that receives it, in two separate rectangular housings, and give an output when an object interrupts the beam between them. Because they reach longer distances than other sensing types, they are used on wide conveyors, in warehouse and vehicle passages, and in door and ramp applications.

  • Separate sensing, motion control, logic processing and operator interface requirements.
  • Select signal type, supply voltage, communication protocol and I/O count for the machine network.
  • Verify housing size, sensing distance and PNP/NPN output polarity against the PLC input card.

Frequently asked questions

What is Through-Beam Rectangular Photoelectric Sensors and where is it used?

Through-beam rectangular photoelectric sensors consist of a transmitter that sends the light and a receiver that receives it, in two separate rectangular housings, and give an output when an object interrupts the beam between them. Because they reach longer distances than other sensing types, they are used on wide conveyors, in warehouse and vehicle passages, and in door and ramp applications.

What should I compare when choosing Through-Beam Rectangular Photoelectric Sensors?

Choose by comparing the sensing distance suited to the gap between transmitter and receiver, a supply voltage that can be brought to both sides, the receiver's output type and cable, terminal, or M8 or M12 connector connection.

Where can I find technical details for Through-Beam Rectangular Photoelectric Sensors products?

A through-beam photoelectric sensor should not be confused with a single-housing retroreflective photoelectric sensor; with the through-beam type, cable must be run to both sides.

Through-Beam Rectangular Photoelectric Sensors Selection Guide: Technical Criteria and Engineering Practice