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 Communication Protocol Maximum DC Voltage Terminal Type Light Source IP Rating Maximum Current Interface Response Time
RS Stock No. 157-7078
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.E3JMDS70M4TG
Brand :Omron
THB5,612.60
Each
Units
Block Diffuse 700 mm Relay 5-Terminal Screw 250V - 5V - Infrared IP66 3 A - 30 ms
RS Stock No. 822-4645
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.E3Z-T61-L
Brand :Omron
THB3,233.81
Each
Units
Block Through Beam (Emitter) 60 m NPN 2/3-Wire Cable 2m - - 24V - - IP67 35 mA - 1 ms
RS Stock No. 447-153
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.GL20-RT/32/40A/98A
THB8,428.06
Each
Units
Fork Through Beam (Fork) 20 mm PNP 3-Pin M8 Connector - - 30V - LED IP67 100 mA - <=160 μs
RS Stock No. 372-8177
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.E3ZR612M
Brand :Omron
THB2,720.89
Each
Units
Block Retroreflective 100 mm → 4 m NPN 3-Wire Cable 2m - - 26.4V - LED IP69K 100 mA - 1 ms
RS Stock No. 405-7195
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.SLC1BB6Q
Brand :Banner
THB37,310.99
Each
Units
Block - 30.5 mm PNP 5-Pin M12 Connector - - 30V - LED IP67 150 mA - 100 μs
RS Stock No. 256-449
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.E3JMDS70M4G
Brand :Omron
THB7,383.31
Each
Units
Block Diffuse 700 mm Relay 5-Terminal Screw 250V - 5V - Infrared IP66 3 A - 30 ms
RS Stock No. 256-433
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.E3JMR4M4G
Brand :Omron
THB6,230.54
Each
Units
Block Retro-Reflective 4 m Relay Terminal Block 250V - 5V - LED IP66 3 A - 30 ms
RS Stock No. 405-7410
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.QS186E
Brand :Banner
THB4,706.16
Each
Units
Block Through Beam (Emitter) 20 m - 2-Wire Cable 2m - - 30V - LED IP67 100 mA - 750 ms
RS Stock No. 374-2044
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.E3ZR86
Brand :Omron
THB3,632.63
Each
Units
Block Retro-Reflective 100 mm → 4 m PNP M8 Connector - - 26.4V - LED IP69K 100 mA - 1 ms
RS Stock No. 847-9182
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.QS18VN6FF100
Brand :Banner
THB4,246.99
Each
Units
Barrel Diffuse 100 mm NPN Cable - - 30V - LED IP67 <25 mA - 850 μs
RS Stock No. 512-4640
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.XUK1ARCNL2
THB3,891.28
Each
Units
Compact Retro-Reflective 7 m Relay Cable 240V - 240V - Infrared IP65 3 A - <25 ms
RS Stock No. 860-1364
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.S18SP6LPQ
Brand :Banner
THB3,866.23
Each
Units
Barrel Retroreflective 2 m PNP 4-Pin M12 Connector - - 30V - LED IP69K 30 mA - 3 ms
RS Stock No. 714-1650
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.ML100-8-H-350-RT/102/115
THB4,477.26
Each
Units
Block Diffuse 5 → 350 mm NPN Cable - - 30V - LED IP67 100 mA - 1 ms
RS Stock No. 219-2331
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.EE-SPX403N
Brand :Omron
THB1,803.76
Each
Units
Fork Through Beam (Fork) 13 mm NPN Non-Solder Connector - - 24V - Infrared IP50 80 mA - -
RS Stock No. 493-7287
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.WL18-3P430
Brand :Sick
THB5,828.00
Each
Units
Block Retroreflective 7 m PNP 4-Pin M12 Connector - - 30V - LED IP65, IP67 100 mA - 500 μs
RS Stock No. 743-1319
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.E3Z-LS81 2M
Brand :Omron
THB4,632.92
Each
Units
Block Background Suppression 20 → 200 mm PNP 4-Wire Cable 2m - - 26.4V - LED IP67 100 mA - 1 ms
RS Stock No. 860-1759
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.SM31EQD
Brand :Banner
THB3,380.29
Each
Units
Block Through Beam (Emitter) 3 m NPN/PNP 4-Pin M12 Connector - - 30V - LED IP67 25 mA - 1 ms
RS Stock No. 753-0337
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.XUK2ARCNL2R
THB4,330.57
Each
Units
Compact Through Beam (Receiver) 30 m Relay 5-Wire Cable 2m 240V - 240V - Infrared IP65 3 A - <25 ms
RS Stock No. 444-3574
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.XUX0AKSAT16
THB6,192.01
Each
Units
Block Multimode 1.3 m, 2 m, 11 m, 40 m NPN/PNP 3-Terminal Screw - - 24V - Infrared IP65, IP67 100 mA - <2 ms
RS Stock No. 303-2151
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.E3TFT122M
Brand :Omron
THB5,825.59
Each
Units
Block Through Beam (Emitter and Receiver) 500 mm NPN Pre-Wired Cable - - 26.4V - LED IP67 50 mA - 1 ms
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