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 714-1583
Référence fabricant42JS-D2MPA1-F4
44,90 €
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Unité
Block Diffuse 0.003 → 0.8 m PNP 4-Pin Connector - - 30V - - - IP67 - -
N° de stock RS 714-1596
Référence fabricant42JS-R9MPA1-F4
36,60 €
Each
Unité
Block Through Beam (Receiver) 10 m PNP 4-Pin Connector - - 30V - - LED IP67 - -
N° de stock RS 714-1616
Référence fabricant42JS-E1EZB1-F4
26,90 €
Each
Unité
Block Through Beam (Emitter) 10 m - 4-Pin Connector - - 30V - - Infrared IP67 - -
N° de stock RS 714-1612
Référence fabricant42JS-E2EZB1-F4
26,90 €
Each
Unité
Block Through Beam (Emitter) 10 m - 4-Pin Connector - - 30V - - LED IP67 - -
N° de stock RS 134-8355
Référence fabricant42JT-E2EZB1-P4
40,50 €
Each
Unité
Block Through Beam (Emitter) 0 → 13 m NPN/PNP 4-Pin M8 Connector - IO-LINK 30V - 4-Pin Pico Quick Disconnect LED IP67, IP69K 30 mA IO-Link
N° de stock RS 134-8366
Référence fabricant42EF-D2MPAK-Y4
45,90 €
Each
Unité
Block Diffuse 500 mm PNP 4-Pin Connector - IO-LINK 30V - 4-Pin Pico Quick Disconnect LED IP67 100 mA IO-Link
N° de stock RS 134-8371
Référence fabricant45LMS-D8LGC2-D4
459,00 €
Each
Unité
Block Diffuse 0.2 → 15 m NPN/PNP 4-Pin M12 Connector - IO-LINK 30V - 4-Pin Micro Quick Disconnect LED IP65 70 mA IO-Link
N° de stock RS 134-8361
Référence fabricant42JT-R8LAT1-P4
59,60 €
Each
Unité
Block Through Beam (Receiver) 0 → 18 m NPN/PNP 4-Pin M8 Connector - IO-LINK 30V - 4-Pin Pico Quick Disconnect Laser Light IP67, IP69K 30 mA IO-Link
N° de stock RS 134-8370
Référence fabricant45LMS-D8LGC1-D4
296,00 €
Each
Unité
Block Diffuse 0.2 → 8 m NPN/PNP 4-Pin M12 Connector - IO-LINK 30V - 4-Pin Micro Quick Disconnect LED IP65 70 mA IO-Link
N° de stock RS 134-8368
Référence fabricant42EF-P2MPB-F4
50,00 €
Each
Unité
Block Retroreflective 3 m PNP 4-Pin Connector - IO-LINK 30V - 4-Pin Micro Quick Disconnect LED IP67 100 mA IO-Link
N° de stock RS 134-8352
Référence fabricant42JT-D2LAT1-P4
68,70 €
Each
Unité
Block Diffuse 3 → 800 mm NPN/PNP 4-Pin M8 Connector - IO-LINK 30V - 4-Pin Pico Quick Disconnect LED IP67, IP69K 30 mA IO-Link
N° de stock RS 134-8353
Référence fabricant42JT-B2LAT2-P4
108,00 €
Each
Unité
Block Background Suppression 3 → 400 mm NPN/PNP 4-Pin M8 Connector - IO-LINK 30V - 4-Pin Pico Quick Disconnect LED IP67, IP69K 30 mA IO-Link
N° de stock RS 134-8356
Référence fabricant42JT-R9LAT1-P4
53,00 €
Each
Unité
Block Through Beam (Receiver) 0 → 18 m NPN/PNP 4-Pin M8 Connector - IO-LINK 30V - 4-Pin Pico Quick Disconnect LED IP67, IP69K 30 mA IO-Link
N° de stock RS 714-1577
Référence fabricant42CSS-C2MPA1-D4
74,80 €
Each
Unité
Barrel Clear Object Detection 1 m PNP - - - 30V - - LED IP69K 100 mA -
N° de stock RS 134-8354
Référence fabricant42JT-P2LAT1-P4
71,20 €
Each
Unité
Block Retroreflective 0.1 → 6 m NPN/PNP 4-Pin M8 Connector - IO-LINK 30V - 4-Pin Pico Quick Disconnect LED IP67, IP69K 30 mA IO-Link
N° de stock RS 134-8365
Référence fabricant42EF-D2MPAK-F4
45,90 €
Each
Unité
Block Diffuse 500 mm PNP 4-Pin Connector - IO-LINK 30V - 4-Pin Micro Quick Disconnect LED IP67 100 mA IO-Link
N° de stock RS 714-1565
Référence fabricant42CSS-B2MPA1-D4
104,00 €
Each
Unité
Barrel Diffuse 100 mm PNP - - - 30V - - LED IP69K 100 mA -
N° de stock RS 714-1599
Référence fabricant42JS-R9MPA2-F4
36,60 €
Each
Unité
Block Through Beam (Receiver) 10 m PNP 4-Pin Connector - - 30V - - Infrared IP67 - -
N° de stock RS 134-8369
Référence fabricant42EF-P2MPB-Y4
50,70 €
Each
Unité
Block Retroreflective 3 m PNP 4-Pin Connector - IO-LINK 30V - 4-Pin Pico Quick Disconnect LED IP67 100 mA IO-Link
N° de stock RS 134-8358
Référence fabricant42JT-B8LAT1-P4
145,00 €
Each
Unité
Block Background Suppression 4 → 120 mm NPN/PNP 4-Pin M8 Connector - IO-LINK 30V - 4-Pin Pico Quick Disconnect Laser Light IP67, IP69K 30 mA IO-Link