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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รายละเอียดสินค้า / Description ราคา / Price Sensor Style Detection Type Detection Range Output Type Electrical Connection Maximum AC Voltage Maximum DC Voltage Terminal Type Light Source IP Rating Maximum Current Interface Response Time Housing Material
RS Stock No. 786-5873
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.WT34-R220
Brand :Sick
THB9,517.50
Each
Units
Block Background Suppression 100 → 2500 mm Relay 5-Terminal Screw - 240V - Infrared IP67 4 A - 10 ms ABS
RS Stock No. 786-5918
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.WL12L-2B530
Brand :Sick
THB15,204.50
Each
Units
Block Retroreflective 0 → 18 m NPN/PNP 5-Pin M12 Connector - 30V - Laser Light IP67, IP69K 100 mA - 200 μs Die Cast Zinc
RS Stock No. 530-0866
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.WTB27-3P2411
Brand :Sick
THB9,282.50
Each
Units
Block Diffuse 30 → 1600 mm PNP 4-Pin M12 Connector - 30V - Infrared IP69K 100 mA - <=1.5 ms ABS
RS Stock No. 442-0391
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.WL160-F440
Brand :Sick
THB7,364.58
Each
Units
Block Retroreflective 0.01 → 6.5 m PNP 4-Pin M8 Connector - 30V - LED IP69K 100 mA - <=0.5 ms PBT
RS Stock No. 786-5851
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.WL260-S270
Brand :Sick
THB5,264.00
Each
Units
Block Retroreflective 0.01 → 15 m Relay 5-Terminal Screw 240V 240V - LED IP67 3 A - 20 ms ABS
RS Stock No. 288-9805
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.WT150-P460
Brand :Sick
THB4,864.50
Each
Units
Block Diffuse 2 → 100 mm PNP 4-Pin M8 Connector - 30V - LED IP67 100 mA - <=0.5 ms ABS, PC
RS Stock No. 493-7316
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.WF2-40B410
Brand :Sick
THB5,287.50
Each
Units
Fork Through Beam (Fork) 2 mm NPN/PNP 4-Pin M8 Connector - 30V - Infrared IP65 100 mA - 100 μs Aluminium
RS Stock No. 218-951
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.WL100L-F1131
Brand :Sick
THB5,428.50
Each
Units
Block Retroreflective 0.08 → 12 m PNP Cable - 30V - Laser Light IP65 100 mA - <0.25 ms ABS, PMMA
RS Stock No. 786-5860
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.WL260-F470
Brand :Sick
THB5,264.00
Each
Units
Block Retroreflective 0.01 → 14 m PNP 4-Pin M12 Connector - 30V - LED IP67 100 mA - 1.5 ms ABS
RS Stock No. 121-2724
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.GL6G-P4211
Brand :Sick
THB3,352.38
Each
Units
Block Retroreflective 6 m PNP 4-Pin M8 Connector - 30V M8 LED IP67 30 mA - <625 μs ABS, PC
RS Stock No. 458-828
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.WL12-3P2431
Brand :Sick
THB6,603.50
Each
Units
Block Retro-Reflective 7 m PNP 4-Pin M12 Connector - 30V - LED IP69K 100 mA - <=330 μs Metal
RS Stock No. 493-7287
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.WL18-3P430
Brand :Sick
THB6,462.50
Each
Units
Block Retroreflective 7 m PNP 4-Pin M12 Connector - 30V - LED IP65, IP67 100 mA - 500 μs ABS
RS Stock No. 786-5924
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.WS/WE260-S270
Brand :Sick
THB6,580.00
Each
Units
Block Through Beam (Emitter and Receiver) 0 → 45 m Relay 5-Terminal Screw - 240V - LED IP67 3 A - 20 ms ABS, Plastic
RS Stock No. 530-0951
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.WTB4-3P1361
Brand :Sick
THB5,593.00
Each
Units
Block Diffuse 4 → 150 mm PNP 3-Wire Cable 2m - 30V - LED IP66, IP67 100 mA - <0.5 ms Bayblend, PMMA
RS Stock No. 530-0850
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.WL27-3P2430
Brand :Sick
THB6,063.00
Each
Units
Block Retroreflective 0.1 → 15 m PNP 4-Pin M12 Connector - 30V - LED IP69K 100 mA - <=500 μs ABS
RS Stock No. 786-5936
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.WTB140-P430
Brand :Sick
THB5,484.39
Each
Units
Block Background Suppression 2 → 500 mm PNP 4-Pin M8 Connector - 30V - LED IP67 100 mA - 0.5 ms PBT
RS Stock No. 458-850
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.WL12-3P1151
Brand :Sick
THB6,603.50
Each
Units
Block Retroreflective 2 m PNP Cable - 30V - LED IP69K 100 mA - <=330 μs Metal
RS Stock No. 784-6705
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.DS50-P1122
Brand :Sick
THB15,251.50
Each
Units
Block Background Suppression 200 → 10000 mm PNP 5-Pin M12 Connector - 30V - Laser Light IP65 100 mA - 20 ms, 30 ms Die Cast Zinc, PMMA
RS Stock No. 786-5863
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.WT260-S270
Brand :Sick
THB5,264.00
Each
Units
Block Background Suppression 5 → 1700 mm Relay M12 Connector - 240V - LED IP67 3 A - 20 ms ABS
RS Stock No. 768-9470
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.WTB9-3P1161
Brand :Sick
THB4,535.50
Each
Units
Block Background Suppression 20 → 350 mm PNP Pre-Wired Cable - 30V - LED IP66, IP67, IP69K 100 mA - <0.333 ms Al2O3