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.


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 are capable of detecting 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 has to 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 back 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. A diffuse mode sensor with background suppression is less sensitive to the target colour. They can also use a visible red light or infrared light sources.


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Description Prix Sensor Style Detection Type Detection Range Output Type Electrical Connection Maximum AC Voltage Communication Protocol Maximum DC Voltage Optical Technology Terminal Type Light Source IP Rating Maximum Current Interface
N° de stock RS 816-0374
Référence fabricantE3FCRN21
MarqueOmron
77,75 €
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Unité
Barrel Retroreflective 100 mm → 4 m NPN M12 Connector - - 30V - Cable LED IP67, IP68, IP69K 25 mA -
N° de stock RS 816-0337
Référence fabricantE3FCDP23
MarqueOmron
81,05 €
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Barrel Diffuse 1 m PNP M12 Connector - - 30V - Cable LED IP67, IP68, IP69K 25 mA -
N° de stock RS 768-5926
Référence fabricantE3FADP22
MarqueOmron
60,80 €
Each
Unité
Barrel Diffuse 300 mm PNP 4-Pin M12 Connector - - 30V - - LED IP67, IP69K 25 mA -
N° de stock RS 372-8177
Référence fabricantE3ZR612M
MarqueOmron
98,50 €
Each
Unité
Block Retroreflective 100 mm → 4 m NPN 3-Wire Cable 2m - - 26.4V - - LED IP69K 100 mA -
N° de stock RS 768-5897
Référence fabricantE3FARP122M
MarqueOmron
63,10 €
Each
Unité
Barrel Retroreflective 0 → 500 mm PNP Pre-Wired Cable - - 30V - - LED IP67, IP69K 25 mA -
N° de stock RS 617-0666
Référence fabricantE3ZLR86
MarqueOmron
154,30 €
Each
Unité
Block Retroreflective 0.2 → 7 m PNP 4-Pin M8 Connector - - 26.4V - - LED IP67 100 mA -
N° de stock RS 768-5881
Référence fabricantE3FARP21
MarqueOmron
60,80 €
Each
Unité
Barrel Retroreflective 100 mm → 4 m PNP 4-Pin M12 Connector - - 30V - - LED IP67, IP69K 25 mA -
N° de stock RS 775-4228
Référence fabricantE3FBRP21
MarqueOmron
66,45 €
Each
Unité
Barrel Retroreflective 100 mm → 4 m PNP 4-Pin M12 Connector - - 30V - - LED IP67, IP69K 25 mA -
N° de stock RS 374-2066
Référence fabricantE3ZD86
MarqueOmron
98,50 €
Each
Unité
Block Diffuse 5 → 100 mm PNP 4-Pin M8 Connector - - 26.4V - - Infrared IP69K 100 mA -
N° de stock RS 617-0694
Référence fabricantE3Z-LL86
MarqueOmron
200,90 €
Each
Unité
Block Background Suppression 20 → 300 mm PNP 4-Pin M8 Connector - - 26.4V - - LED IP67 100 mA -
N° de stock RS 768-5917
Référence fabricantE3FADP21
MarqueOmron
60,80 €
Each
Unité
Barrel Diffuse 100 mm PNP 4-Pin M12 Connector - - 30V - - LED IP67, IP69K 25 mA -
N° de stock RS 743-1313
Référence fabricantE3Z-LS86
MarqueOmron
133,80 €
Each
Unité
Block Background Suppression 20 → 200 mm PNP 4-Pin M8 Connector - - 26.4V - - LED IP67 100 mA -
N° de stock RS 745-2174
Référence fabricantE3Z-LS61 2M
MarqueOmron
133,80 €
Each
Unité
Block Background Suppression 20 → 200 mm NPN 4-Wire Cable 2m - - 24V - - LED IP67 100 mA -
N° de stock RS 768-5872
Référence fabricantE3FATP21
MarqueOmron
88,55 €
Each
Unité
Barrel Through Beam (Emitter and Receiver) 20 m PNP 4-Pin M12 Connector - - 30V - - LED IP67, IP69K 40 mA -
N° de stock RS 816-0333
Référence fabricantE3FCDP22
MarqueOmron
79,95 €
Each
Unité
Barrel Diffuse 300 mm PNP M12 Connector - - 30V - Cable LED IP67, IP68, IP69K 25 mA -
N° de stock RS 822-4639
Référence fabricantE3Z-LL68
MarqueOmron
200,90 €
Each
Unité
Block Background Suppression 25 → 300 mm NPN 4-Pin M8 Connector - - 24V - M8 Connector LED IP67 30 mA -
N° de stock RS 768-5891
Référence fabricantE3FARP22
MarqueOmron
63,10 €
Each
Unité
Barrel Retroreflective 0 → 500 mm PNP 4-Pin M12 Connector - - 30V - - LED IP67, IP69K 25 mA -
N° de stock RS 768-5923
Référence fabricantE3FA-DP12 2M
MarqueOmron
60,80 €
Each
Unité
Barrel Diffuse 300 mm PNP 4-Wire Cable 2m - - 30V - - LED IP67, IP69K 25 mA -
N° de stock RS 816-0371
Référence fabricantE3FCRP112M
MarqueOmron
77,75 €
Each
Unité
Barrel Retroreflective 100 mm → 4 m PNP Pre-Wired Cable - - 30V - Wire Lead LED IP67, IP68, IP69K 25 mA -
N° de stock RS 374-2044
Référence fabricantE3ZR86
MarqueOmron
98,50 €
Each
Unité
Block Retroreflective 100 mm → 4 m PNP 4-Pin M8 Connector - - 26.4V - - LED IP69K 100 mA -