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. 768-5881
FabrikantnummerE3FARP21
FabrikantOmron
€ 60,80
Each
Aantal stuks
Barrel Retroreflective 100 mm → 4 m PNP 4-Pin M12 Connector - - 30V - - LED IP67, IP69K 25 mA -
RS-stocknr. 374-2044
FabrikantnummerE3ZR86
FabrikantOmron
€ 98,50
Each
Aantal stuks
Block Retroreflective 100 mm → 4 m PNP 4-Pin M8 Connector - - 26.4V - - LED IP69K 100 mA -
RS-stocknr. 617-0701
FabrikantnummerE3ZM-R86
FabrikantOmron
€ 172,10
Each
Aantal stuks
Block Retroreflective 100 mm → 4 m PNP 4-Pin M8 Connector - - 30V - - LED IP69K 100 mA -
RS-stocknr. 617-0650
FabrikantnummerE3Z-LR81 2M
FabrikantOmron
€ 154,30
Each
Aantal stuks
Block Retroreflective 0.2 → 7 m PNP 3-Wire Cable 2m - - 26.4V - - LED IP67 100 mA -
RS-stocknr. 768-5891
FabrikantnummerE3FARP22
FabrikantOmron
€ 63,10
Each
Aantal stuks
Barrel Retroreflective 0 → 500 mm PNP 4-Pin M12 Connector - - 30V - - LED IP67, IP69K 25 mA -
RS-stocknr. 768-5936
FabrikantnummerE3FADP23
FabrikantOmron
€ 60,80
Each
Aantal stuks
Barrel Diffuse 1 m PNP 4-Pin M12 Connector - - 30V - - LED IP67, IP69K 25 mA -
RS-stocknr. 617-0694
FabrikantnummerE3Z-LL86
FabrikantOmron
€ 200,90
Each
Aantal stuks
Block Background Suppression 20 → 300 mm PNP 4-Pin M8 Connector - - 26.4V - - LED IP67 100 mA -
RS-stocknr. 372-8155
FabrikantnummerE3ZD622M
FabrikantOmron
€ 98,50
Each
Aantal stuks
Block Diffuse 1 m NPN 3-Wire Cable 2m - - 26.4V - - Infrared IP69K 100 mA -
RS-stocknr. 816-0374
FabrikantnummerE3FCRN21
FabrikantOmron
€ 77,75
Each
Aantal stuks
Barrel Retroreflective 100 mm → 4 m NPN M12 Connector - - 30V - Cable LED IP67, IP68, IP69K 25 mA -
RS-stocknr. 743-1313
FabrikantnummerE3Z-LS86
FabrikantOmron
€ 133,80
Each
Aantal stuks
Block Background Suppression 20 → 200 mm PNP 4-Pin M8 Connector - - 26.4V - - LED IP67 100 mA -
RS-stocknr. 374-2066
FabrikantnummerE3ZD86
FabrikantOmron
€ 98,50
Each
Aantal stuks
Block Diffuse 5 → 100 mm PNP 4-Pin M8 Connector - - 26.4V - - Infrared IP69K 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. 821-0040
FabrikantnummerE3Z-D66
FabrikantOmron
€ 98,50
Each
Aantal stuks
Block Diffuse 5 → 100 mm NPN 4-Pin M8 Connector - - 24V - 4-Pin Connector Infrared IP67 30 mA -
RS-stocknr. 821-0062
FabrikantnummerE3Z-T81A
FabrikantOmron
€ 128,30
Each
Aantal stuks
Block Through Beam (Emitter and Receiver) 10 m PNP 3-Wire Cable 2m - - 24V - Wire Lead LED IP67 35 mA -
RS-stocknr. 768-5926
FabrikantnummerE3FADP22
FabrikantOmron
€ 60,80
Each
Aantal stuks
Barrel Diffuse 300 mm PNP 4-Pin M12 Connector - - 30V - - LED IP67, IP69K 25 mA -
RS-stocknr. 617-0622
FabrikantnummerE3Z-LT86
FabrikantOmron
€ 200,90
Each
Aantal stuks
Block Through Beam (Emitter and Receiver) 60 m PNP 4-Pin M8 Connector - - 26.4V - - LED IP67 100 mA -
RS-stocknr. 768-5879
FabrikantnummerE3FA-RN21
FabrikantOmron
€ 60,80
Each
Aantal stuks
Barrel Retroreflective 100 mm → 4 m NPN 4-Pin M12 Connector - - 30V - - LED IP67, IP69K 25 mA -
RS-stocknr. 617-0723
FabrikantnummerE3ZM-D87
FabrikantOmron
€ 172,10
Each
Aantal stuks
Block Diffuse 1 m PNP 4-Pin M8 Connector - - 30V - - Infrared IP69K 100 mA -
RS-stocknr. 775-4262
FabrikantnummerE3FBDP22
FabrikantOmron
€ 68,60
Each
Aantal stuks
Barrel Diffuse 300 mm PNP 4-Pin M12 Connector - - 30V - - LED IP67, IP69K 25 mA -
RS-stocknr. 768-5872
FabrikantnummerE3FATP21
FabrikantOmron
€ 88,55
Each
Aantal stuks
Barrel Through Beam (Emitter and Receiver) 20 m PNP 4-Pin M12 Connector - - 30V - - LED IP67, IP69K 40 mA -