Ultrasonic through-beam barriers are highly suited for reliable presence control and counting of objects at high speed. The through-beam barrier consist of a transmitter and a receiver. The transmitter emits acoustic pulses on a cyclical basis which are captured by the receiver. If an object interrupts the pulses between the transmitter and the receiver, the switching output of the receiver is set.
The robust ultrasonic barrier ews is available as a cuboid miniature housing and a cylindrical M18 housing.
