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.RS Components offer an extensive selection of photoelectric sensors for use various industrial applications. Our high-quality products are supplied from leading brands including Omron, Sick, Pepperl + Fuchs Telemecanique Sensors Baumer, Banner and of course RS PRO.

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 can detect 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 must 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 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.


...
顯示內容 隱藏內容

篩選條件

正在檢視 3101 - 3120,共 3163 項產品
Results per page
Description Price Sensor Style Detection Type Detection Range Output Type Electrical Connection Switching Mode Maximum AC Voltage Communication Protocol Maximum DC Voltage Terminal Type Light Source IP Rating Maximum Current Interface
RS庫存編號 2508470025
製造零件編號MPB20
HK$480.20
單位
- - - - - - - - - - - - - -
RS庫存編號 2508470097
製造零件編號MPS11HD
HK$1,409.10
單位
- - - - - - - - - - - - - -
RS庫存編號 2508470148
製造零件編號MPT32HD
HK$1,037.54
單位
- - - - - - - - - - - - - -
RS庫存編號 2508470081
製造零件編號MPR1HD
HK$1,473.08
單位
- - - - - - - - - - - - - -
RS庫存編號 2508470069
製造零件編號MPL2HD
HK$1,613.92
單位
- - - - - - - - - - - - - -
RS庫存編號 2508470132
製造零件編號MPT21HD
HK$1,242.50
單位
- - - - - - - - - - - - - -
RS庫存編號 2509665956
製造零件編號SM2A312LV
HK$1,403.36
單位
- - - - - - - - - - - - - -
RS庫存編號 2509664666
製造零件編號S18S2P6FF100Q
HK$1,260.56
單位
- - - - - - - - - - - - - -
RS庫存編號 2509665978
製造零件編號SM2A312W
HK$1,403.36
單位
- - - - - - - - - - - - - -
RS庫存編號 2509665136
製造零件編號SMA31E
HK$1,039.64
單位
- - - - - - - - - - - - - -
RS庫存編號 2509202889
製造零件編號MLV12-8-H-250-RT/65B/1
HK$2,270.66
單位
- - - - - - - - - - - - - -
RS庫存編號 2509665489
製造零件編號SM2A312LPQD
HK$1,468.32
單位
- - - - - - - - - - - - - -
RS庫存編號 2509667003
製造零件編號S18SN6LPQ
HK$974.68
單位
- - - - - - - - - - - - - -
RS庫存編號 2509666965
製造零件編號S18SN6D
HK$665.84
單位
- - - - - - - - - - - - - -
RS庫存編號 2509667047
製造零件編號S18SN6DQ
HK$730.94
單位
- - - - - - - - - - - - - -
RS庫存編號 2509665120
製造零件編號SM31EL
HK$844.76
單位
- - - - - - - - - - - - - -
RS庫存編號 2550074522
製造零件編號T30SN6FF200Q
HK$1,143.52
單位
- - - - - - - - - - - - - -
RS庫存編號 2509202980
製造零件編號MPL6HD
HK$1,613.92
單位
- - - - - - - - - - - - - -
RS庫存編號 2508425309
製造零件編號SMA912LVQD
HK$1,936.62
單位
- - - - - - - - - - - - - -
RS庫存編號 2509203523
製造零件編號VL18-54-M/40A/118/128
HK$1,409.10
單位
- - - - - - - - - - - - - -