Photoelectric sensors

Infrared / Red light sensors

Photoelectric sensors are used where safe and non-contact de-tection of the exact position of objects is required. The material of the objects to be detected is of no importance. Compared to proximity switches photoelectric sensors have a much higher sensing zone.
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Laser sensors

Laser systems are used where detection of small objects or precise positioning is required.
Due to the small angle of divergence long ranges of up to 60 metres can be achieved.
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Fibre optic sensors

Fibre optics are used where mounting space for photoelectric standard sensors is confined. Advantages of these systems: The evaluation electronics and the optoelectronic components are located separately from the sensing surface of the system.
Fibre optic sensing heads can therefore be mounted in places where access is difficult.
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Systems for specific application

Special tasks require special solutions. In addition to the standard photoelectric sensors and fibre optic systems ifm electronic offers special sensors for certain applications.
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Optical safety sensors

Wherever motion of machine parts presents a danger to people or goods, safety light curtains or safety light grids are used. The protective equipment ensures that the outputs are switched off which results in a machine halt.
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Colour detection sensors

Colour detection systems are more reliable and powerful than the human eye because errors caused by tiring, subjective colour assessment and slow response times just don’t happen.
The ifm colour sensors operate on the active method. The receiver is only looking for a reflection of the light from the transmitter, modified by the target object. Any light with different spectral composition from the transmitter is ignored. Therefore filtering on the receiver side is not necessary. Passive sensors which rely only on reflected light from the object are more affected by ambient changes.
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