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. 808-9449
FabrikantnummerCX-491-P
FabrikantPanasonic
€ 93,65
Each
Aantal stuks
Block Retroreflective 3 m PNP 2m Cable - 24V - - LED IP67 100 mA - 1 ms
RS-stocknr. 431-2010
FabrikantnummerEQ34PN
FabrikantPanasonic
€ 167,97
Each
Aantal stuks
Block Retroreflective 0.1 → 2 m PNP 3-Wire Cable 2m - 30V - - Infrared IP67 100 mA - <=2 ms
RS-stocknr. 480-4985
FabrikantnummerEQ501
FabrikantPanasonic
€ 163,16
Each
Aantal stuks
Block Diffuse 0.1 → 2.5 m Relay 4-Terminal Screw 250V 30V - Screw Infrared IP67 3 A - <=20 ms
RS-stocknr. 431-2515
FabrikantnummerNX5PRVM5B
FabrikantPanasonic
€ 100,15
Each
Aantal stuks
Block Retroreflective 0.1 → 5 m Relay Cable 250V 30V - - LED IP66 - - <=10 ms
RS-stocknr. 431-1900
FabrikantnummerEX11EAPN
FabrikantPanasonic
€ 90,93
Each
Aantal stuks
Block Through Beam (Emitter and Receiver) 150 mm PNP Cable - 24V - - LED IP67 50 mA - <=0.5 ms
RS-stocknr. 812-8204
FabrikantnummerCY-192A-Z-Y
FabrikantPanasonic
€ 27,23
Each
Aantal stuks
Barrel Retroreflective 4 m NPN M12 Connector - 24V - - Infrared IP67 35 mA - 1 ms
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 - <=0.5 ms
RS-stocknr. 808-9442
FabrikantnummerCX-491-P-Z
FabrikantPanasonic
€ 93,65
Each
Aantal stuks
Block Retroreflective 3 m PNP M8 Connector - 24V - - LED IP67 100 mA - 1 ms
RS-stocknr. 361-5510
FabrikantnummerEX-13A-PN
FabrikantPanasonic
€ 99,83
Each
Aantal stuks
Block Through Beam (Emitter and Receiver) 500 mm PNP 3-Wire Cable 2m - 24V - - LED IP67 50 mA - <=0.5 ms
RS-stocknr. 808-9121
FabrikantnummerCX-411
FabrikantPanasonic
€ 96,44
Each
Aantal stuks
Block Through Beam (Emitter and Receiver) 10 m NPN 3-Wire Cable 2m - 24V - - LED IP67 100 mA - 1 ms
RS-stocknr. 877-7391
FabrikantnummerHG-C1100-P
FabrikantPanasonic
€ 428,40
Each
Aantal stuks
Block Background Suppression 100 mm NPN/PNP 5-Wire Cable 2m - 24V - - Laser Light IP67 - - 1.5 (High Speed) ms, 5 (Standard) ms, 10 (High Precision) ms
RS-stocknr. 480-5039
FabrikantnummerEQ501T
FabrikantPanasonic
€ 213,19
Each
Aantal stuks
Block Diffuse 0.1 → 2.5 m Relay 4-Terminal Screw 250V 30V - Screw Infrared IP67 3 A - <=20 ms
RS-stocknr. 812-8099
FabrikantnummerCY-111B-P-Z
FabrikantPanasonic
€ 49,76
Each
Aantal stuks
Barrel Through Beam (Emitter and Receiver) 15 m PNP M12 Connector - 24V - - Infrared IP67 35 mA - 1 ms
RS-stocknr. 480-5017
FabrikantnummerCX411P
FabrikantPanasonic
€ 86,70
Each
Aantal stuks
Block Through Beam (Emitter and Receiver) 10 m PNP 2m Cable - 24V - - LED IP67 100 mA - <=1 ms
RS-stocknr. 812-8213
FabrikantnummerCY-192A-P-Z-Y
FabrikantPanasonic
€ 28,04
Each
Aantal stuks
Barrel Retroreflective 4 m PNP M12 Connector - 24V - - Infrared IP67 35 mA - 1 ms
RS-stocknr. 877-7398
FabrikantnummerHG-C1050-P
FabrikantPanasonic
€ 428,40
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. 431-2509
FabrikantnummerNX5PRVM5A
FabrikantPanasonic
€ 91,05
Each
Aantal stuks
Block Retroreflective 0.1 → 5 m Relay Cable 250V 30V - - LED IP66 - - <=10 ms
RS-stocknr. 609-9028
FabrikantnummerEQ502
FabrikantPanasonic
€ 163,16
Each
Aantal stuks
Block Diffuse 0.1 → 1 m Relay 4-Terminal Screw 250V 30V - Screw Infrared IP67 3 A - <=20 ms
RS-stocknr. 431-1764
FabrikantnummerNX5M30A
FabrikantPanasonic
€ 138,14
Each
Aantal stuks
Block Through Beam (Emitter and Receiver) 30 m Relay 3-Wire Cable 2m 250V 30V - - Infrared IP66 - - <=10 ms
RS-stocknr. 808-9360
FabrikantnummerCX-411A-C05
FabrikantPanasonic
€ 65,14
Each
Aantal stuks
Block Through Beam (Emitter and Receiver) 10 m NPN 2m Cable - 24V - - LED IP67 100 mA - 1 ms