With retro-reflective photoelectric sensors, or reflector photoelectric sensors, the transmitter and receiver are in a single housing, just as with diffuse proximity photoelectric sensors. However, the sensor always looks at a reflector which is placed opposite the sensor. The output of the sensor becomes active as soon as an object moves inbetween the sensor and the reflector. Unlike with normal reflective sensors, polarized retro-reflective photoelectric sensors use special polarized filters so that the receiver accepts only light reflected by the reflector and not by another reflective object, such as, for example, a metallic paint of a car. Thus, it is possible to detect translucent and reflective objects as well.

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Type
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Series
Detection range
Housing
Output
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Power supply

SMRR 8500 MG 5

The SMRR 8500 MG 5 is a retro-reflective sensor with a range of up to 300 cm. In stainless steel M18 housing. The sensor has 5m fixed cable and is PNP-NO+NC adjustable. The SMRR 8500 MG 5 is also available in an ATEX variety.

SMRR 8500 MG J

The SMRR 8500 MG J is a retro-reflectieve photoelectric sensor with a range of up to 300 cm. In stainless steel M18 housing. The photoelectric sensor has a 4-pole M12 connector and is PNP-NO + NC adjustable.