Photoelectric Sensors

Photoelectric sensors detect and measure physical objects or quantities by emitting a field or beam of electromagnetic radiation, an object is detected by measuring alterations in the return signal. There are 3 main types of photoelectric sensors which provide reliable detection, these are through-beam, retro-reflective and diffuse. The basic function of each is to detect the presence or absence of objects or measure the distance to the object.RS Components offer an extensive selection of photoelectric sensors for use various industrial applications. Our high-quality products are supplied from leading brands including Omron, Sick, Pepperl + Fuchs Telemecanique Sensors Baumer, Banner and of course RS PRO.

Through-beam Sensors

Through-beam sensors (aka thru-beam) rely on two separate housings, one for the transmitter and one for the receiver, with the transmitter providing a continuous beam of light to the receiver. Each time an object passes through the beam this interrupts the signal between the transmitter and receiver, which in turn causes the receiver to send an electrical signal to the output. Through-beam sensors are suited to long-distance sensing and can detect almost any object, irrespective of colour or angular motion.

Retro-reflective Sensors

Retro-reflective photoelectric sensors (retroreflective) have both the transmitter and receiver contained within the same housing but require a reflector opposite to the sensor. The reflector bounces the light beam back to the transmitter until an object breaks the beam. Objects which are highly reflective such as aluminium require sensors with polarising filters. The filter allows the sensor to acknowledge that the reflected light from reflecting materials is different from the reflector.

Diffuse Sensors

Diffuse sensors (proximity sensor) are easier to install as only one device must be mounted. This is because the transmitter and receiver are contained within one housing. Diffuse sensors use the reflection from the target object within a predetermined sensing range. The transmitter sends out a continuous beam of light, once this hits the target it is diffused in all directions, a part of this light is reflected and recognised by the receiver, the receiver then sends an electrical signal to the output.A special type of diffused mode is background suppression which enables the user to precisely control the sensing range.


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Beskrivning Pris Sensor Style Detection Type Detection Range Output Type Electrical Connection Switching Mode Maximum AC Voltage Communication Protocol Maximum DC Voltage Optical Technology Terminal Type Light Source IP Rating Maximum Current
RS-artikelnummer 729-5090
VarumärkeRS PRO
758,85 kr
Each
Enheter
Barrel Background Suppression 1 mm → 140 mm NPN M12 4 Pin Connector - - - 30V - - LED IP67 100 mA
RS-artikelnummer 377-8419
VarumärkeRS PRO
3 128,14 kr
Each
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Fork Through Beam 2 mm PNP 4 Wire Cable 2 m - - - 30V - - LED IP67 100 mA
RS-artikelnummer 729-5157
VarumärkeRS PRO
777,41 kr
Each
Enheter
Block Retroreflective 150 mm → 10 m PNP M12 4 Pin Connector - - - 30V - - LED IP67 100 mA
RS-artikelnummer 285-885
VarumärkeRS PRO
1 875,49 kr
Each
Enheter
Block Diffuse 700 mm Relay 4 Terminal Screw - 250V - 240V - Screw Infrared LED IP66 2 A
RS-artikelnummer 729-5117
VarumärkeRS PRO
776,98 kr
Each
Enheter
Barrel Retroreflective 50 mm → 7 m PNP 4 Wire Cable 2 m - - - 30V - - LED IP67 100 mA
RS-artikelnummer 729-5113
VarumärkeRS PRO
776,98 kr
Each
Enheter
Barrel Retroreflective 50 mm → 7 m PNP M12 4 Pin Connector - - - 30V - - LED IP67 100 mA
RS-artikelnummer 729-5195
VarumärkeRS PRO
719,82 kr
Each
Enheter
Block Retroreflective 5 m PNP M8 4 Pin Connector - - - 24V - - LED IP67 100 mA
RS-artikelnummer 729-5094
VarumärkeRS PRO
706,18 kr
Each
Enheter
Barrel Background Suppression 1 mm → 140 mm NPN 4 Wire Cable 2 m - - - 30V - - LED IP67 100 mA
RS-artikelnummer 204-3963
VarumärkeRS PRO
514,96 kr
Each
Enheter
Barrel Diffuse 150 mm NPN NO M12 Connector - - - 30V - M12 Connector Yellow LED IP67 -
RS-artikelnummer 202-4431
VarumärkeRS PRO
431,89 kr
Each
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Block Diffuse 100 mm PNP Cable 2 m - - - - - Cable 2 m - - -
RS-artikelnummer 204-3965
VarumärkeRS PRO
514,96 kr
Each
Enheter
Barrel Diffuse 150 mm PNP NO M12 Connector - - - 30V - M12 Connector Yellow LED IP67 -
RS-artikelnummer 204-3974
VarumärkeRS PRO
514,96 kr
Each
Enheter
Barrel Diffuse 400 mm NPN NO/NC M12 Connector - - - 30V - M12 Connector Yellow LED IP67 -
RS-artikelnummer 204-3966
VarumärkeRS PRO
535,93 kr
Each
Enheter
Barrel Diffuse 150 mm NPN NO Cable 2 m - - - 30V - Cable 2 m Yellow LED IP67 -
RS-artikelnummer 204-4017
VarumärkeRS PRO
433,91 kr
Each
Enheter
Barrel Polarised Retro Reflection 3 m NPN NO/NC Cable 2 m - - - 30V - Cable 2 m LED IP67 -
RS-artikelnummer 440-5639
VarumärkeRS PRO
997,30 kr
Each
Enheter
Barrel Diffuse 100 mm NPN/PNP M12 Connector - - - 30V - - Infrared IP67 100 mA
RS-artikelnummer 729-5135
VarumärkeRS PRO
817,46 kr
Each
Enheter
Block Diffuse 40 mm → 1 m NPN M12 4 Pin Connector - - - 30V - - LED IP67 100 mA
RS-artikelnummer 204-3980
VarumärkeRS PRO
452,73 kr
Each
Enheter
Barrel Retroreflective 3 m NPN NO/NC Cable 2 m - - - 30V - Cable 2 m Yellow LED IP67 -
RS-artikelnummer 202-4432
VarumärkeRS PRO
457,57 kr
Each
Enheter
Block Diffuse 100 mm PNP M8 Connector - - - - - M8 Connector - - -
RS-artikelnummer 204-4015
VarumärkeRS PRO
726,94 kr
Each
Enheter
Barrel Background Suppression 100 mm PNP NO/NC M12 Connector - - - 30V - M12 Connector LED IP67 -
RS-artikelnummer 204-3967
VarumärkeRS PRO
535,93 kr
Each
Enheter
Barrel Diffuse 150 mm PNP NO Cable 2 m - - - 30V - Cable 2 m Yellow LED IP67 -