1) Photoelectric
A form of sensor that uses light to detect the presence or absence of a physical object. See also Sensor .
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A form of sensor that uses light to detect the presence or absence of a physical object. See also Sensor .
The use of an exact sequence of light pulses to activate the output on a photoelectric cell.
Another name for fixed focus sensing where the photoelectric sensor will only detect objects at a fixed distance from the sensor.
The usable beam diameter in photoelectric transmitted beam sensing which equals the lens diameter of the light source and receiver.
The ability of polarized retro-reflective photoelectric sensors to eliminate false operation as a result of shiny objects.
The angle at which photoelectric sensors are sometimes mounted in retro-reflective applications so as to prevent the reflection of the object itself from triggering the sensor.
The point at which just enough light intensity is present to trigger a photoelectric sensor given the usable area of the lens, For example, an excess gain of two would mean that just enough light intensity is present to trigger a sensor with 50% of the lens obscured with contaminants.