Photoelectric sensor provide non-contact accurate detection of targets. They emit infrared, red or laser light and the target breaks the light beam or reflects the beam back to the sensor to activate the sensor output. Photoelectric sensing modes are divided into three primary types, those being through-beam, retro-reflective and diffuse. Photoelectric sensors can check for presence, color, distance, size, shape, and many more targets attributes.
Diffuse sensing mode, sometimes referred to as proximity or energetic, uses the reflectivity of the target. Unlike other photoelectric sensing modes, the object reflects the light back to the sensor’s receiver instead of interrupting the light beam to actuate the output. Contact
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