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. 808-9143
FabrikantnummerCX-444
FabrikantPanasonic
123,17 €
Each
Aantal stuks
Block Diffuse 15 100 mm NPN 2m Cable - 24V - - LED IP67 100 mA - 1 ms
RS-stocknr. 480-5001
FabrikantnummerCX411PZ
FabrikantPanasonic
91,65 €
Each
Aantal stuks
Block Through Beam (Emitter and Receiver) 10 m PNP M8 Connector - 24V - - LED IP67 100 mA - <=1 ms
RS-stocknr. 808-9449
FabrikantnummerCX-491-P
FabrikantPanasonic
96,46 €
Each
Aantal stuks
Block Retroreflective 3 m PNP 2m Cable - 24V - - LED IP67 100 mA - 1 ms
RS-stocknr. 812-8159
FabrikantnummerCX-412B-P-C05
FabrikantPanasonic
69,06 €
Each
Aantal stuks
- - - PNP - - - - - LED IP67 - - 1 ms
RS-stocknr. 812-8213
FabrikantnummerCY-192A-P-Z-Y
FabrikantPanasonic
28,88 €
Each
Aantal stuks
Barrel Retroreflective 4 m PNP M12 Connector - 24V - - Infrared IP67 35 mA - 1 ms
RS-stocknr. 877-7395
FabrikantnummerHG-C1030
FabrikantPanasonic
441,25 €
Each
Aantal stuks
Block Background Suppression 30 mm NPN Cable - 24V - - Laser Light IP67 - - 1.5 (High Speed) ms, 5 (Standard) ms, 10 (High Precision) ms
RS-stocknr. 125-4572
FabrikantnummerPM-F65W-P
FabrikantPanasonic
20,30 €
Each
Aantal stuks
Fork Through Beam (Fork) 6 mm PNP 4-Pin Connector - 24V - 4-Pin Connector Infrared IP40 50 (Source Current) mA - 20 (Received) μs, 80 (Interrupted) μs
RS-stocknr. 431-5643
FabrikantnummerEX11EBPN
FabrikantPanasonic
99,83 €
Each
Aantal stuks
Block Through Beam (Emitter and Receiver) 150 mm PNP Cable - 24V - - LED IP67 50 mA - <=0.5 ms
RS-stocknr. 877-7398
FabrikantnummerHG-C1050-P
FabrikantPanasonic
441,25 €
Each
Aantal stuks
Block Background Suppression 50 mm PNP Cable - 24V - - Laser Light IP67 - - 1.5 (High Speed) ms, 5 (Standard) ms, 10 (High Precision) ms
RS-stocknr. 812-8187
FabrikantnummerCY-191A-P-Z-Y
FabrikantPanasonic
43,92 €
Each
Aantal stuks
Barrel Retroreflective 2 m PNP M12 Connector - 24V - - LED IP67 35 mA - 1 ms
RS-stocknr. 808-9442
FabrikantnummerCX-491-P-Z
FabrikantPanasonic
96,46 €
Each
Aantal stuks
Block Retroreflective 3 m PNP M8 Connector - 24V - - LED IP67 100 mA - 1 ms
RS-stocknr. 808-9398
FabrikantnummerSH-21E
FabrikantPanasonic
79,36 €
Each
Aantal stuks
- Through Beam (Emitter and Receiver) 300 mm - Cable - - - Cable Infrared IP62 - - -
RS-stocknr. 361-5560
FabrikantnummerEX-14B-PN
FabrikantPanasonic
85,37 €
Each
Aantal stuks
Block Retroreflective 2 25 mm PNP Cable - 24V - - LED IP67 50 mA - <=0.5 ms
RS-stocknr. 808-9430
FabrikantnummerCX-441-P
FabrikantPanasonic
123,17 €
Each
Aantal stuks
Block Diffuse 2 50 mm PNP 4-Wire Cable 2m - 24V - - LED IP67 100 mA - 1 ms
RS-stocknr. 431-2010
FabrikantnummerEQ34PN
FabrikantPanasonic
173,01 €
Each
Aantal stuks
Block Retroreflective 0.1 2 m PNP 3-Wire Cable 2m - 30V - - Infrared IP67 100 mA - <=2 ms
RS-stocknr. 125-4546
FabrikantnummerPM-L45-P-C3
FabrikantPanasonic
30,45 €
Each
Aantal stuks
Fork Through Beam (Fork) 6 mm PNP 3m Cable - 24V - Cable Infrared IP64 50 (Source Current) mA - 20 (Received) μs, 80 (Interrupted) μs
RS-stocknr. 812-8229
FabrikantnummerCY-192B-Z-Y
FabrikantPanasonic
28,05 €
Each
Aantal stuks
Barrel Retroreflective 4 m NPN M12 Connector - 24V - - Infrared IP67 35 mA - 1 ms
RS-stocknr. 136-5655
FabrikantnummerEX-Z11FA-P
FabrikantPanasonic
139,83 €
Each
Aantal stuks
Block Through Beam (Emitter and Receiver) 50 mm PNP Cable - 24V - Wire Lead LED IP67 20 mA - 0.5 ms
RS-stocknr. 125-4547
FabrikantnummerPM-Y45
FabrikantPanasonic
22,13 €
Each
Aantal stuks
Fork Through Beam (Fork) 6 mm NPN 1m Cable - 24V - Cable Infrared IP64 50 (Sink Current) mA - 20 (Received) μs, 80 (Interrupted) μs
RS-stocknr. 431-1770
FabrikantnummerNX5RM7B
FabrikantPanasonic
99,06 €
Each
Aantal stuks
Block Retroreflective 0.1 7 m Relay Cable 250V 30V - - Infrared IP66 - - <=10 ms