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. 444-3530
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.XUK0AKSAM12
THB4,660.91
Each
Units
Compact Through Beam (Emitter) 0.28 m, 0.8 m, 4 m, 30 m PNP 4-Pin M12 Connector - - 24V - Infrared IP65 100 mA - <2 ms
RS Stock No. 695-6820
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.XUB4BPANM12
THB2,609.81
Each
Units
Barrel Diffuse 0.1 m PNP 4-Pin M12 Connector - - 24V - Infrared IP65, IP67 100 mA - <1 ms
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. 444-3574
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.XUX0AKSAT16
THB5,437.88
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. 753-0337
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.XUK2ARCNL2R
THB3,479.26
Each
Units
Compact Through Beam (Receiver) 30 m Relay 5-Wire Cable 2m 240V - 240V - Infrared IP65 3 A - <25 ms
RS Stock No. 816-3682
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.XUAH0515
THB4,164.13
Each
Units
Barrel Diffuse 0.07 m PNP Cable - - 30V - LED IP67 100 mA - -
RS Stock No. 394-9009
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.XUKT1KSMM12
THB10,096.15
Each
Units
Compact Retroreflective 1.5 m PNP 4-Pin M12 Connector - - 24V - LED IP65 100 mA - <=0.3 ms
RS Stock No. 816-3705
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.XURK1KSMM12
THB19,269.66
Each
Units
Compact Diffuse 9 mm NPN/PNP M12 Connector - - 30V - LED - 200 mA - -
RS Stock No. 609-0813
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.XUX1ARCNT16
THB4,761.10
Each
Units
Block Retroreflective 14 m Relay 5-Terminal Screw 240V - 240V - Infrared IP65, IP67 3 A, 500 mA - <25 ms
RS Stock No. 394-8955
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.XUKT1KSML2
THB11,444.95
Each
Units
Compact Retroreflective 1.5 m PNP 3-Wire Cable 2m - - 24V - LED IP65 100 mA - <=0.3 ms
RS Stock No. 198-992
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.XUB2APANL2R
THB2,107.13
Each
Units
Barrel Through Beam (Receiver) 15 m PNP Cable - - 24V - Infrared IP65, IP67 100 mA - <1 ms
RS Stock No. 814-8018
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.XUVF60M8
THB27,094.67
Each
Units
Fork Through Beam 60 mm NPN/PNP 4-Pin M8 Connector - - 30V Wire Lead Infrared IP65 120 mA - <1 ms
RS Stock No. 674-2040
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.XUYFA983003COS
THB7,187.43
Each
Units
Fork Through Beam (Fork) 3 m NPN/PNP 4-Pin M8 Connector - - 24V - Infrared IP65 100 mA - 50 μs
RS Stock No. 752-5250
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.XUBLAPCNM12
THB12,497.89
Each
Units
Barrel Through Beam (Emitter and Receiver) 100 m PNP M12 Connector - - 24V - Laser Light IP67 100 mA - <0.4 ms
RS Stock No. 444-3451
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.XUB0BPSNM12
THB3,891.28
Each
Units
Barrel Diffuse, Retro-Reflective, Through Beam (Receiver) 0.12 m, 0.3 m, 2 m, 15 m PNP 4-Pin M12 Connector - - 24V - Infrared IP65, IP67 100 mA - <2 ms
RS Stock No. 512-4662
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.XUK5ARCNL2
THB3,482.89
Each
Units
Compact Diffuse 1 m Relay 5-Wire Cable 2m 240V - 240V - Infrared IP65 3 A - <25 ms
RS Stock No. 512-4656
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.XUK9ARCNL2
THB3,355.12
Each
Units
Compact Retroreflective 5 m Relay 5-Wire Cable 2m 240V - 240V - LED IP65 3 A - <25 ms
RS Stock No. 444-3401
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.XUB0APSNM12
THB3,558.71
Each
Units
Barrel Diffuse, Retro-Reflective, Through Beam (Receiver) 0.12 m, 0.3 m, 2 m, 15 m PNP 4-Pin M12 Connector - - 24V - Infrared IP65, IP67 100 mA - <2 ms
RS Stock No. 444-3568
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.XUX0AKSAM12
THB5,309.60
Each
Units
Block Multimode 1.3 m, 2 m, 11 m, 40 m NPN/PNP 4-Pin M12 Connector - - 24V - Infrared IP65, IP67 100 mA - <2 ms
RS Stock No. 753-0315
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.XUK2APANL2R
THB3,158.81
Each
Units
Compact Through Beam (Receiver) 30 m PNP Cable - - 24V - Infrared IP65 100 mA - <2 ms