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, these are: through beam, retro-reflective and diffuse. The basic function of each is to detect the presence or absence of objects, or measure distance to the object.
Through beam Sensors
Through beam sensors 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 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 reflect materials is different to that from the reflector.
Diffuse Sensors
Diffuse sensors 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.

...
Read more Read less

Filters

Viewing 1 - 20 of 1852 products
Results per page
Sort by
Description Price 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 Stock No. 297-5754
Mfr. Part No.RLK39-8-2000/31/40A/116
SGD297.44
Each
units
Block Diffuse 2000 mm Relay Terminal Compartment 240V 240V - - Infrared LED IP67 3 A - <=20 ms
RS Stock No. 615-8256
Mfr. Part No.E3Z-LT81 2M
BrandOmron
SGD231.61
Each
units
Block Through Beam (Emitter and Receiver) 60 m PNP Pre-Wired Cable - 26.4V Laser, Phototransistor - LED IP67 100 mA - 1 ms
RS Stock No. 405-7397
Mfr. Part No.QS18VP6DQ
BrandBanner
SGD148.54
Each
units
Block Diffuse 450 mm PNP Cable - 30V Phototransistor - LED IP67 100 mA - 600 ms
RS Stock No. 405-7404
Mfr. Part No.QS18VP6DQ
BrandBanner
SGD135.24
Each
units
Block Diffuse 450 mm PNP Cable - 30V Phototransistor - LED IP67 100 mA - 600 ms
RS Stock No. 256-449
Mfr. Part No.E3JMDS70M4G
BrandOmron
SGD237.15
Each
units
Block Diffuse 700 mm Relay Terminal Block 250V 5V - - Infrared LED IP66 3 A - 30 ms
RS Stock No. 814-0355
Mfr. Part No.O6H303
SGD196.53
Each
units
Block Diffuse 2 → 200 mm PNP M8 Connector - 30V - Cable LED IP65, IP67, IP68, IP69 22 mA - -
RS Stock No. 617-0694
Mfr. Part No.E3Z-LL86
BrandOmron
SGD535.36
Each
units
Block Distance 20 → 300 mm PNP M8 Connector - 26.4V Laser, Phototransistor - LED IP67 100 mA - 1 ms
RS Stock No. 371-4673
Mfr. Part No.VTF18-3F1840
BrandSick
SGD114.00
Each
units
Barrel Diffuse 100 mm PNP 4-Pin M12 Connector - 30V Phototransistor - Infrared LED IP67 100 mA - <=2 ms
RS Stock No. 157-7078
Mfr. Part No.E3JMDS70M4TG
BrandOmron
SGD250.40
Each
units
Block Diffuse 700 mm Relay Terminal Block 250V 5V - - Infrared LED IP66 3 A - 30 ms
RS Stock No. 842-2906
Mfr. Part No.Q12AB6FF50Q
BrandBanner
SGD153.28
Each
units
Block Diffuse Maximum of 50 mm NPN, PNP Cable - 30V Visible Red LED - LED IP67 20 mA - 700 μs
RS Stock No. 219-2296
Mfr. Part No.EE-SX672
BrandOmron
SGD42.61
Each
units
Fork Through Beam (Fork) 5 mm NPN Connector - 24V Phototransistor - Infrared LED IP50 100 mA - -
RS Stock No. 442-0391
Mfr. Part No.WL160-F440
BrandSick
SGD316.00
Each
units
Block Retro-Reflective 0.01 → 6.5 m PNP 4-Pin M8 Connector - 30V Phototransistor - LED IP69K 100 mA - <=0.5 ms
RS Stock No. 219-2410
Mfr. Part No.EE-SY672
BrandOmron
SGD36.29
Each
units
Block Retro-Reflective 1 → 5 mm NPN - - 24V Phototransistor - Infrared LED IP50 100 mA - -
RS Stock No. 695-6980
Mfr. Part No.XUVR0608PBNM8
SGD129.96
Each
units
Fork Through Beam (Fork) 80 mm PNP 3-Pin M8 Connector - 24V Phototransistor - LED IP65, IP67 100 mA - -
RS Stock No. 818-1520
Mfr. Part No.EE-SPY411
BrandOmron
SGD77.24
Each
units
Block Convergent 2 → 5 mm NPN - - 24V Phototransistor Connector Infrared GaAs Emitter IP50 50 mA - -
RS Stock No. 431-5643
Mfr. Part No.EX11EBPN
BrandPanasonic
SGD152.32
Each
units
Block Through Beam (Emitter and Receiver) 150 mm PNP Cable - 24V Phototransistor - LED IP67 50 mA - <=0.5 ms
RS Stock No. 808-9367
Mfr. Part No.CX-412A-C05
BrandPanasonic
SGD93.44
Each
units
Block Through Beam (Emitter and Receiver) 15 m NPN 2m Cable - 24V Phototransistor - Infrared LED IP67 100 mA - 1 ms
RS Stock No. 493-7287
Mfr. Part No.WL18-3P430
BrandSick
SGD265.00
Each
units
Block Retro-Reflective 7 m PNP 4-Pin M12 Connector - 30V Phototransistor - LED IP65, IP67 100 mA - 500 μs
RS Stock No. 124-0334
Mfr. Part No.OBT300-R101-2EP-IO-V31-L
SGD218.00
Each
units
Block Background Suppression 7 → 300 mm NPN-NO/NC, PNP-NO/NC, Push Pull 4-Pin M8 Connector - 30V Laser 4-Pin Connector Laser Diode IP67, IP69, IP69K 100 mA IO-Link 300 μs
RS Stock No. 847-9233
Mfr. Part No.QS18VN6LV
BrandBanner
SGD132.58
Each
units
Barrel Retro-Reflective Maximum of 6.5 m NPN Cable - 30V Visible Red LED - LED IP67 <25 mA - 600 μs
Related Products
IP67 ABS housingImmune to HF lights, flashing alarm ...
Description:
IP67 ABS housingImmune to HF lights, flashing alarm lights, etcVisible red light sourceSupply voltage: 10-30VdcShort circuit and reverse polarity protectionRetro-reflective types have polarisation filter featureDiffuse Scan types have range adjustment featureOperating temperature range: –40 → +60 °CM8 Plug-In or ...
Horizontal and vertical format versionsPBT Housing, denaturated polyallyate ...
Description:
Horizontal and vertical format versionsPBT Housing, denaturated polyallyate lens, IP67 sealedPNP and NPN output configurationsLight ON/dark ON operationTwo-turn sensitivity adjustorLight and stability LED indicationOperating temperature range -25° → +55°CShort circuit and reverse polarity protectionMounting ...
Through-beam (Infrared LED), Retro-reflective (Visible red LED) and ...
Description:
Through-beam (Infrared LED), Retro-reflective (Visible red LED) and Diffuse scan (Infrared LED) photoelectric sensors. IP67 rated PBT housing with methacylate lensPNP and NPN output configurationsLight ON/dark ON selectableSmall dead-band for sensing close targetsRetro-reflective versions have polarised light ...
Through-beam (Infrared LED), Retro-reflective (Visible red LED) and ...
Description:
Through-beam (Infrared LED), Retro-reflective (Visible red LED) and Diffuse scan (Infrared LED) photoelectric sensors. IP67 rated PBT housing with methacylate lensPNP and NPN output configurationsLight ON/dark ON selectableSmall dead-band for sensing close targetsRetro-reflective versions have polarised light ...