Through beam sensors
With through beam sensors, the transmitter and receiver are in two separate devices positioned directly opposite each other. The transmitter continuously sends light to the receiver. The receiver switches as soon as the light beam is disconnected by an object. Through beam sensors are more resistant to malfunctioning and offer very high ranges. Read more here
Through beam sensors: How they work
Properties of through beam sensors
- Large range as the light goes directly from the transmitter to the receiver and is not reflected, i.e. the light has to travel the path in one direction only.
- Transmitter and receiver (2 devices) have to be installed and aligned. Exact installation is the precondition for safe and reliable operation.
- Great range
- Great excess gain
- Safe detection of opaque and reflecting objects