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.


...
Read more Read less

Filters

Viewing 1 - 20 of 57 products
Results per page
Description Price Sensor Style Detection Type Detection Range Output Type Electrical Connection Switching Mode Maximum AC Voltage Communication Protocol Maximum DC Voltage Terminal Type Light Source IP Rating Maximum Current Interface
RS Stock No. 814-0370
Mfr. Part No.O5D100
$320.88
Each
units
Block Distance 30 mm → 2 m PNP M12 Connector - - IO-LINK 30V Cable LED IP65, IP67 75 mA IO-Link
RS Stock No. 739-6673
Mfr. Part No.O1D100
$625.17
Each
units
Block Diffuse 0.2 → 10 m Analogue, PNP M12 Connector - - - 30V - Laser Light IP67 200 mA -
RS Stock No. 488-132
Mfr. Part No.O5P200
$230.34
Each
units
Block Retroreflective 0.1 → 7 m PNP M12 Connector - - - 36V - LED IP67 200 mA -
RS Stock No. 814-0373
Mfr. Part No.OGS500
$187.90
Each
units
Barrel Through Beam (Emitter) 25 m - M12 Connector - - - 30V Wire Lead LED IP67 20 mA -
RS Stock No. 488-126
Mfr. Part No.O5H200
$255.99
Each
units
Block Diffuse 50 → 1400 mm PNP M12 Connector - - - 36V - LED IP65 200 mA -
RS Stock No. 487-898
Mfr. Part No.O1D106
$685.65
Each
units
Block Background Suppression 1 → 75 m PNP M12 Connector - - - 30V - Laser Light IP67 200 mA -
RS Stock No. 488-122
Mfr. Part No.O5H500
$478.29
Each
units
Block Diffuse 50 → 1800 mm PNP M12 Connector - - - 36V - LED IP67 200 mA -
RS Stock No. 814-0364
Mfr. Part No.O6P301
$269.81
Each
units
Block Retroreflective 50 mm → 5 m PNP M12 Connector - - - 30V Cable LED IP65, IP67, IP68, IP69 12 mA -
RS Stock No. 739-6660
Mfr. Part No.OJ5044
$235.83
Each
units
Block Diffuse 15 → 400 mm PNP 4-Pin M8 Connector - - - 30V - LED IP67 200 mA -
RS Stock No. 425-8405
Mfr. Part No.OJ5014
$354.27
Each
units
Block Retroreflective 8 m PNP M8 Connector - - - 30V - LED IP67 200 mA -
RS Stock No. 814-0361
Mfr. Part No.OID200
$323.40
Each
units
Barrel Background Suppression 30 mm → 2 m NPN/PNP M12 Connector - - IO-LINK 30V Wire Lead LED IP65, IP67 75 mA IO-Link
RS Stock No. 814-0349
Mfr. Part No.OGP500
$227.64
Each
units
Barrel Retroreflective 30 mm → 5 m PNP M12 Connector - - - 36V 4-Pin LED IP67 20 mA -
RS Stock No. 191-9933
Mfr. Part No.OF5012
$267.96
Each
units
Barrel Diffuse 1 → 200 mm PNP M12 Connector - - - 36V - Infrared IP65 200 mA -
RS Stock No. 814-0351
Mfr. Part No.O6H301
$245.07
Each
units
Block Diffuse 2 → 200 mm PNP M12 Connector - - - 30V Cable LED IP65, IP67, IP68, IP69 24 mA -
RS Stock No. 814-0345
Mfr. Part No.OGH500
$242.97
Each
units
Barrel Diffuse 15 → 300 mm PNP M12 Connector - - - 36V Wire Lead LED IP67 25 mA -
RS Stock No. 814-0367
Mfr. Part No.O6P303
$223.65
Each
units
Block Retroreflective 50 mm → 5 m PNP 4-Pin M8 Connector - - - 30V Cable LED IP65, IP67, IP68, IP69 12 mA -
RS Stock No. 814-0358
Mfr. Part No.OGE500
$204.68
Each
units
Barrel Through Beam (Receiver) 25 m PNP M12 Connector - - - 36V Wire Lead LED IP67 11 mA -
RS Stock No. 488-138
Mfr. Part No.O5S200
$194.46
Each
units
Block Through Beam (Emitter) 20 m - M12 Connector - - - 36V - LED IP67 200 mA -
RS Stock No. 739-6620
Mfr. Part No.O4H500
$349.44
Each
units
Block Diffuse 100 → 2600 mm PNP M12 Connector - - - 36V - LED IP67 200 mA -
RS Stock No. 739-6654
Mfr. Part No.OF5025
$257.88
Each
units
Barrel Retroreflective 0.2 → 0.8 m PNP M12 Connector - - - 36V - LED IP65 200 mA -