Photoelectric Standard Sensors

How we work
As photoelectric sensors we operate with light. For this reason we are also known as light barriers. Normally we use red light or infrared light, but for certain applications we may also use laser light. In every case we consist of a transmitter and receiver. If transmitter and receiver are fitted in separate housing, we are referred to as a through-beam light barrier, as the light beam is projected directly from the transmitter to the receiver. If both components are fitted in one housing, a reflector is used to direct the light before it hits the receiver again. As soon as the light beam is interrupted by an object, the receiver can no longer get the light, which causes a signal to be released, with which the requested action is started. In actual fact, we do nothing else than converting optical into electrical signals.

What we can do
We are able to recognize objects in non-contact mode and even over larger distances. We can react within milliseconds and can transfer our information to the control system. You will find us wherever the precise position of objects has to be detected fast and safely, covering a wide range of applications. We recognize parcels and pallets on a conveyor belt; we can check the height of objects and can help in sorting and positioning. In case of packaging processes, for example, we can check whether the requested box is present and ensure the exact filling level. In case of filling systems, for example, we recognize the presence of glass bottles and monitor the correct position of the label. If transport, packaging or monitoring is concerned, we are game for any job. In the process we are faster as light barrier than as ultrasonic sensors, and we have a wide detection range than inductive sensors.

What makes us so special
We photoelectric sensors detect objects independently of their material or color. We do not shy away from transparent or reflecting surfaces either. As light barriers we are very reliable because our transmitters supply ten to hundred times as much light as would be necessary for safe recognition. This ensures that the system operates perfectly even in case of heavy soiling or not quite correct alignment. We operate reliably even under extreme conditions - for example in case of bright ambient light, high humidity, dust or dirt. As we are available in a large variety of different sizes, construction and materials, we fit into narrow spaces and are up to rough environmental conditions as well. Moreover, many of us have been adapted to specific and demanding industrial applications.