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. 179-5326
FabrikantnummerSA1E-XP1C
FabrikantIdec
€ 142,93
Each
Aantal stuks
Block Retroreflective 2 (IAC-R9) m PNP 4-Pin M8 Connector - 30V - - LED IP67 20 mA - 500 μs
RS-stocknr. 179-5336
FabrikantnummerSA1U-P07MT
FabrikantIdec
€ 117,21
Each
Aantal stuks
Block Retroreflective 7 m Relay 5-Terminal Screw 250V 30V - Spring Up LED IP67 3 A - 20 ms
RS-stocknr. 179-5327
FabrikantnummerSA1U-B02M
FabrikantIdec
€ 132,89
Each
Aantal stuks
Block Background Suppression 2 m Relay 5-Terminal Screw 250V 30V - Spring Up Infrared IP67 3 A - 20 ms
RS-stocknr. 179-5337
FabrikantnummerSA1U-P07MW
FabrikantIdec
€ 110,95
Each
Aantal stuks
Block Retroreflective 7 m NPN/PNP 5-Terminal Screw - 30V - Spring Up LED IP67 100 mA - 1 ms
RS-stocknr. 179-5328
FabrikantnummerSA1U-B02MT
FabrikantIdec
€ 140,60
Each
Aantal stuks
Block Background Suppression 2 m Relay 5-Terminal Screw 250V 30V - Spring Up Infrared IP67 3 A - 20 ms
RS-stocknr. 179-5329
FabrikantnummerSA1U-B02MW
FabrikantIdec
€ 124,41
Each
Aantal stuks
Block Background Suppression 2 m NPN/PNP 5-Terminal Screw - 30V - Spring Up Infrared IP67 100 mA - 1 ms
RS-stocknr. 179-5333
FabrikantnummerSA1U-D01MW
FabrikantIdec
€ 99,26
Each
Aantal stuks
Block Diffuse 1 m NPN/PNP 5-Terminal Screw - 30V - Spring Up Infrared IP67 100 mA - 1 ms
RS-stocknr. 179-5338
FabrikantnummerSA1U-P07MWT
FabrikantIdec
€ 117,78
Each
Aantal stuks
Block Retroreflective 7 m NPN/PNP 5-Terminal Screw - 30V - Spring Up LED IP67 100 mA - 1 ms
RS-stocknr. 179-5315
FabrikantnummerSA1E-PN2-2M
FabrikantIdec
€ 80,34
Each
Aantal stuks
Block Retroreflective 1.3 (IAC-RS1) m, 1.6 (IAC-R7) m, 2 (IAC-RS2) m, 3 ((IAC-R6) m, 5 (IAC-R5/R8) m NPN Cable - 30V - - LED IP67 30 mA - 1 ms
RS-stocknr. 179-5341
FabrikantnummerSA1U-T50MW
FabrikantIdec
€ 136,21
Each
Aantal stuks
Block Through Beam 50 m NPN/PNP 5-Terminal Screw - 30V - Spring Up Infrared IP67 100 mA - 1 ms
RS-stocknr. 179-5340
FabrikantnummerSA1U-T50MT
FabrikantIdec
€ 136,21
Each
Aantal stuks
Block Through Beam 50 m Relay 5-Terminal Screw 250V 30V - Spring Up Infrared IP67 3 A - 20 ms
RS-stocknr. 179-5303
FabrikantnummerSA1E-DP1C
FabrikantIdec
€ 80,73
Each
Aantal stuks
Block Diffuse 700 mm PNP 4-Pin M8 Connector - 30V - - Infrared IP67 30 mA - 1 ms
RS-stocknr. 179-5330
FabrikantnummerSA1U-B02MWT
FabrikantIdec
€ 128,85
Each
Aantal stuks
Block Background Suppression 2 m NPN/PNP 5-Terminal Screw - 30V - Spring Up Infrared IP67 100 mA - 1 ms
RS-stocknr. 179-5304
FabrikantnummerSA1E-GP1-2M
FabrikantIdec
€ 80,73
Each
Aantal stuks
Block Convergent 5 → 35 mm PNP 4-Pin M8 Connector - 30V - 4-Pin Connector LED IP67 30 mA - 1 ms
RS-stocknr. 179-5307
FabrikantnummerSA1E-LBP3C
FabrikantIdec
€ 199,20
Each
Aantal stuks
Block Background Suppression 20 → 300 mm PNP 4-Pin M8 Connector - 30V - - - IP67 35 mA - 250 μs
RS-stocknr. 179-5301
FabrikantnummerSA1E-DN1-2M
FabrikantIdec
€ 80,73
Each
Aantal stuks
Block Diffuse 700 mm NPN Cable - 30V - - Infrared IP67 30 mA - 1 ms
RS-stocknr. 179-5320
FabrikantnummerSA1E-TN1-2M
FabrikantIdec
€ 87,46
Each
Aantal stuks
Block Through Beam 20 m NPN Cable - 30V - - Infrared IP67 15 (Projector) mA, 20 (Receiver) mA - 1 ms
RS-stocknr. 179-5319
FabrikantnummerSA1E-PP2C
FabrikantIdec
€ 80,73
Each
Aantal stuks
Block Retroreflective 1.3 (IAC-RS1) m, 1.6 (IAC-R7) m, 2 (IAC-RS2) m, 3 ((IAC-R6) m, 5 (IAC-R5/R8) m PNP 4-Pin M8 Connector - 30V - - LED IP67 30 mA - 1 ms
RS-stocknr. 179-5316
FabrikantnummerSA1E-PP1-2M
FabrikantIdec
€ 80,73
Each
Aantal stuks
Block Retroreflective 1.3 (IAC-RS1) m, 1.6 (IAC-R7) m, 2 (IAC-RS2) m, 3 ((IAC-R6) m, 5 (IAC-R5/R8) m PNP Cable - 30V - - LED IP67 30 mA - 1 ms
RS-stocknr. 179-5334
FabrikantnummerSA1U-D01MWT
FabrikantIdec
€ 104,33
Each
Aantal stuks
Block Diffuse 1 m NPN/PNP 5-Terminal Screw - 30V - Spring Up Infrared IP67 100 mA - 1 ms