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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Omschrijving Prijs 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
RS-stocknr. 361-5554
FabrikantnummerEX-14A-PN
FabrikantPanasonic
€ 87,43
Each
Aantal stuks
Block Retroreflective 2 → 25 mm PNP 3-Wire Cable 2m - - 24V - - LED IP67 50 mA -
RS-stocknr. 752-5060
FabrikantnummerXUB2AKSNM12T
€ 40,00
Each
Aantal stuks
Barrel Through Beam (Emitter) 15 m Solid State 4-Pin M12 Connector - - 24V - - Infrared IP65, IP67 100 mA -
RS-stocknr. 615-8256
FabrikantnummerE3Z-LT81 2M
FabrikantOmron
€ 200,90
Each
Aantal stuks
Block Through Beam (Emitter and Receiver) 60 m PNP 3-Wire Cable 2m - - 26.4V - - LED IP67 100 mA -
RS-stocknr. 530-0939
FabrikantnummerWTB4-3P2161
FabrikantSick
€ 145,60
Each
Aantal stuks
Block Diffuse 4 → 150 mm PNP 3-Pin M8 Connector - - 30V - - LED IP66, IP67 100 mA -
RS-stocknr. 859-3301
FabrikantnummerMOFT20-M12-5
FabrikantCarlo Gavazzi
€ 159,43
Each
Aantal stuks
Barrel Through Beam (Emitter) 20 m NPN/PNP Cable - - 3V - - LED IP66, IP67 15 mA -
RS-stocknr. 265-9272
FabrikantnummerT18SP6FF100Q
FabrikantBanner
€ 151,47
Each
Aantal stuks
Barrel Diffuse 100 mm PNP M12 Connector - - 30V - - LED IP69K 150 mA -
RS-stocknr. 847-0766
Fabrikantnummer135734 | E65-SMTS15-HA
FabrikantEaton
€ 93,92
Each
Aantal stuks
Block Through Beam (Emitter) Maximum of 15 m NPN/PNP Cable - - 30V - - LED IP68 100 mA -
RS-stocknr. 763-7898
FabrikantnummerVL180-2P42431
FabrikantSick
€ 73,84
Each
Aantal stuks
Barrel Retroreflective 0.05 → 7 m PNP 4-Pin M12 Connector - - 30V - - LED IP67 100 mA -
RS-stocknr. 816-0374
FabrikantnummerE3FCRN21
FabrikantOmron
€ 77,75
Each
Aantal stuks
Barrel Retroreflective 0.1 → 4 m NPN M12 Connector - - 30V - Cable LED IP67, IP68, IP69K 25 mA -
RS-stocknr. 842-3331
FabrikantnummerQ60BB6AFV1000Q
FabrikantBanner
€ 214,64
Each
Aantal stuks
- - - NPN, PNP - - - - - - Visible Red LED IP67 - -
RS-stocknr. 821-0000
FabrikantnummerE3S-AT86
FabrikantOmron
€ 204,80
Each
Aantal stuks
Block Through Beam (Emitter and Receiver) 7 m PNP M12 Connector - - 30V - 4-Pin Connector LED IP67 20 mA -
RS-stocknr. 265-9317
FabrikantnummerT30SP6LPQ
FabrikantBanner
€ 115,29
Each
Aantal stuks
Barrel Retroreflective 50 → 6000 mm PNP M12 Connector - - 30V - - - IP69K 150 mA -
RS-stocknr. 786-5895
FabrikantnummerVTE180-2P42447
FabrikantSick
€ 67,60
Each
Aantal stuks
Barrel Background Suppression 1 500 mm PNP 4-Pin M12 Connector - - 30V - - LED IP67 100 mA -
RS-stocknr. 818-1621
FabrikantnummerEE-SX672P
FabrikantOmron
€ 24,16
Each
Aantal stuks
Fork Through Beam (Fork) Maximum of 5 mm PNP 4-Pin Connector - - 24V - Connector Infrared IP50 12 mA -
RS-stocknr. 403-995
FabrikantnummerGLV18-8-400-S/73/120
FabrikantPepperl + Fuchs
€ 54,85
Each
Aantal stuks
Barrel Diffuse 400 mm PNP 4-Pin M12 Connector - - 30V - - LED IP67 100 mA -
RS-stocknr. 812-8204
FabrikantnummerCY-192A-Z-Y
FabrikantPanasonic
€ 28,05
Each
Aantal stuks
Barrel Retroreflective 4 m NPN M12 Connector - - 24V - - Infrared IP67 35 mA -
RS-stocknr. 265-9222
FabrikantnummerT18SP6LPQ
FabrikantBanner
€ 115,29
Each
Aantal stuks
Barrel Retroreflective 50 → 2000 mm PNP M12 Connector - - 30V - - LED IP69K 150 mA -
RS-stocknr. 768-9473
FabrikantnummerWTB9-3P2461
FabrikantSick
€ 160,16
Each
Aantal stuks
Block Background Suppression 20 → 350 mm NPN/PNP 4-Pin M12 Connector - - 30V - - LED IP66, IP67, IP69K 100 mA -
RS-stocknr. 157-7062
FabrikantnummerE3JMR4M4TG
FabrikantOmron
€ 127,90
Each
Aantal stuks
Block Retroreflective 4 m Relay 5-Terminal Screw 250V - 5V - - LED IP66 3 A -
RS-stocknr. 440-5639
FabrikantRS PRO
€ 92,45
Each
Aantal stuks
Barrel Diffuse 100 mm NPN/PNP M12 Connector - - 30V - - Infrared IP67 100 mA -
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