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 Maximum DC Voltage Optical Technology Terminal Type Light Source IP Rating Maximum Current Interface Response Time
RS-stocknr. 816-0374
FabrikantnummerE3FCRN21
FabrikantOmron
76,60 €
Each
Aantal stuks
Barrel Retroreflective 0.1 → 4 m NPN M12 Connector - 30V - Cable LED IP67, IP68, IP69K 25 mA - 0.5 ms
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FabrikantnummerEE-SX1103
FabrikantOmron
1,67 €
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Aantal stuks
Block Diffuse - - - 1.6V - - PCB Pin - - 50 mA - 10 μs
RS-stocknr. 816-0337
FabrikantnummerE3FCDP23
FabrikantOmron
79,85 €
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Aantal stuks
Barrel Diffuse 1 m PNP M12 Connector - 30V - Cable LED IP67, IP68, IP69K 25 mA - 0.5 ms
RS-stocknr. 256-449
FabrikantnummerE3JMDS70M4G
FabrikantOmron
114,20 €
Each
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Block Diffuse 700 mm Relay 5-Terminal Screw 250V 5V - - Infrared IP66 3 A - 30 ms
RS-stocknr. 807-4560
FabrikantnummerEE-SH3
FabrikantOmron
2,95 €
Each
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Block Through Beam (Fork) - Phototransistor - 1.5V - - PCB Pin - - 50 mA - 4 μs
RS-stocknr. 818-1716
FabrikantnummerEE-SX675
FabrikantOmron
16,12 €
Each
Aantal stuks
Fork Through Beam (Fork) Maximum of 5 mm NPN 4-Pin Connector - 24V - Connector Infrared IP50 12 mA - -
RS-stocknr. 284-3304
FabrikantnummerE3SCL2
FabrikantOmron
218,70 €
Each
Aantal stuks
Block Background Suppression 5 → 500 mm NPN 3-Wire Cable 2m - 30V - - Infrared IP67 100 mA - 2 ms
RS-stocknr. 372-8177
FabrikantnummerE3ZR612M
FabrikantOmron
97,00 €
Each
Aantal stuks
Block Retroreflective 100 mm → 4 m NPN 3-Wire Cable 2m - 26.4V - - LED IP69K 100 mA - 1 ms
RS-stocknr. 768-5926
FabrikantnummerE3FADP22
FabrikantOmron
59,90 €
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Barrel Diffuse 300 mm PNP 4-Pin M12 Connector - 30V - - LED IP67, IP69K 25 mA - 0.5 ms
RS-stocknr. 818-1611
FabrikantnummerEE-SX674
FabrikantOmron
15,80 €
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Aantal stuks
Fork Through Beam (Fork) Maximum of 5 mm NPN 4-Pin Connector - 24V - Connector Infrared IP50 12 mA - -
RS-stocknr. 768-5897
FabrikantnummerE3FARP122M
FabrikantOmron
62,15 €
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Barrel Retroreflective 0 → 500 mm PNP Pre-Wired Cable - 30V - - LED IP67, IP69K 25 mA - 0.5 ms
RS-stocknr. 617-0666
FabrikantnummerE3ZLR86
FabrikantOmron
152,00 €
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Aantal stuks
Block Retroreflective 0.2 → 7 m PNP 4-Pin M8 Connector - 26.4V - - LED IP67 100 mA - 1 ms
RS-stocknr. 219-2274
FabrikantnummerEE-SX670
FabrikantOmron
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Aantal stuks
Fork Through Beam (Fork) 5 mm NPN Connector - 24V - - Infrared IP50 100 mA - -
RS-stocknr. 768-5917
FabrikantnummerE3FADP21
FabrikantOmron
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Aantal stuks
Barrel Diffuse 100 mm PNP 4-Pin M12 Connector - 30V - - LED IP67, IP69K 25 mA - 0.5 ms
RS-stocknr. 617-0694
FabrikantnummerE3Z-LL86
FabrikantOmron
197,90 €
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Aantal stuks
Block Background Suppression 20 → 300 mm PNP 4-Pin M8 Connector - 26.4V - - LED IP67 100 mA - 1 ms
RS-stocknr. 745-2174
FabrikantnummerE3Z-LS61 2M
FabrikantOmron
131,80 €
Each
Aantal stuks
Block Background Suppression 20 → 200 mm NPN 4-Wire Cable 2m - 24V - - LED IP67 100 mA - 1 ms
RS-stocknr. 768-5881
FabrikantnummerE3FARP21
FabrikantOmron
59,90 €
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Aantal stuks
Barrel Retroreflective 0.1 → 4 m PNP 4-Pin M12 Connector - 30V - - LED IP67, IP69K 25 mA - 0.5 ms
RS-stocknr. 818-1621
FabrikantnummerEE-SX672P
FabrikantOmron
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Fork Through Beam (Fork) Maximum of 5 mm PNP 4-Pin Connector - 24V - Connector Infrared IP50 12 mA - -
RS-stocknr. 768-5872
FabrikantnummerE3FATP21
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Barrel Through Beam (Emitter and Receiver) 20 m PNP 4-Pin M12 Connector - 30V - - LED IP67, IP69K 40 mA - 0.5 ms
RS-stocknr. 743-1313
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Block Background Suppression 20 → 200 mm PNP 4-Pin M8 Connector - 26.4V - - LED IP67 100 mA - 1 ms