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Photoelectric sensors use beams of light to determine the presence, position and colour of an object. The sensors comprise an LED transmitter and light-sensitive receiver which transform an electric signal into a monochromatic luminous signal. Objects that obstruct the transmitted beam of light reduce the intensity of light that is received by the sensor and therefore changes the sensor’s output.
Telemecanique’s OsiSense XU series of photoelectric sensors are available with different detection systems, such as thru-beam, reflex, reflex polarised, diffuse and diffuse with background suppression. Single mode sensors feature one specific type of detection system, while multimode sensors have the ability to run all five detection systems.
General purpose XU sensors have detection ranges up to 60m, while fork format sensors in the XUV range are easy to install in small conveyors, packaging and labelling machines.
The most typical applications for applicative photoelectric sensors are in mark readers, luminescence sensors, transparency detection, colour sensors, aqueous liquid detection, label detection and laser sensors. In hoisting environments, sensors can be set to anti-collision or tandem modes, where two overhead cranes can be kept a defined distance apart, or split a particularly heavy load between two cranes simultaneously.
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