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Home > Sensors > Ewin Sick > Photoelectric > Diffuse sensors

PRODUCTS

Diffuse sensors

Sick photoelectric sensors with foreground suppression Photoelectric proximity switches with foreground suppression are able to detect objects within a defined scanning distance. All objects between the scanning distance (set to the background) and the scanner itself are detected above the minimum size. Suppression of the foreground is achieved by means of a special arrangement of sender and receiver elements. To ensure that these sensors can function reliably, the background must be relatively light in colour and not fluctuate.
Sick photoelectric sensors with background suppression The operating principle of photoelectric proximity sensors with background suppression is based on the geometrical relationship between the sender and receiver elements. The sensor is adjusted to the object located in the scanning plane. Signals from objects which are behind the set scanning plane are supressed. Photoelectric proximity sensors with background supression can be negatively influenced by high-gloss objects in the background, e.g. glass panels, polished metal etc. These effects can increase if the background within the specified scanning distance is not defined. This can be solved by screening off or tilting devices.
Sick photoelectric sensors with background blanking Background blanking for photoelectric proximity switches is achieved either electronically or optically. In the optical method the angle between the sender and receiver light beam is adjusted while setting the scanning distance to the object. Objects are detected at the point where the emitted beam is reflected back directly to the receiver element. Anything lying below this point remains undetected as no light or too light, reaches the receiver element.
Sick photoelectric sensors, energetic/diffuse The least expensive solution is the energetic photoelectric proximity sensor with adjustable sensitivity. A light surface reflects more light than a dark surface and can, therefore, be detected from a greater distance. In order to achieve similar results with a dark surface, the sensitivity of the switch must be increased. The detection of a dark object in front of a light background is a problem for energetic sensors. Owing to it�s higher remission, the background �outshines� the object. The sensors are, however, ideal for detecting a light object in front of a dark background.

We have only listed some of the popular products. If you cannot find what you looking for please call our office.

Diffuse sensors

Erwin Sick. Background suppression.

Erwin Sick - Germany
Background suppression
Range: 1-15mm or 1-30mm
Supply: 10-30VDC
Red light source
Output: PNP or NPN
Light and dark switching models
Connection: 2mtr cable or pigtail with M8 plug
Enclosure: IP 67
Temperature: -20°C to 50°C
Housing material: ABS
Mounting screws included

WT2S background suppression

Erwin Sick. Energetic, V optics

Erwin Sick - Germany
Background suppression
Range: 1-15mm or 1-30mm
Supply: 10-30VDC
Red light source
Output: PNP or NPN
Light switching
Connection: 2mtr cable or pigtail with M8 plug
Enclosure: IP 67
Temperature: -20°C to 50°C
Housing material: ABS
Mounting screws included

WT2S energetic

Erwin Sick. Energetic 800mm

Erwin Sick - Germany
Energetic mode
Range: 1000mm
Supply: DC10-30VDC
Red light source
Output: PNP or NPN
Light and dark switching
Connection: 2mtr cable or M8 3/4 pin plug
Enclosure: IP 67
Temperature: -25°C to 55°C
Housing material: PBT
Mounting bracket included

WTE140-2 energetic

Erwin Sick. Background suppression

Erwin Sick - Germany
Background suppression
Range: 500mm
Supply: DC10-30VDC
Red light source
Output: PNP or NPN
Light and dark switching
Units with 0-100mS Off delay timer
Connection: 2mtr cable or M8 3/4 pin plug
Enclosure: IP 67
Temperature: -25°C to 55°C
Housing material: PBT
Mounting bracket included

WTB140 Background suppression

Erwin Sick. Foreground suppression

Erwin Sick - Germany
Foreground suppression
Range: 35-100mm
Supply: 10-30VDC
Red light source
Output: PNP or NPN
Light and Dark switching
Connection: 2mtr cable or M12 plug
Enclosure: IP 67
Temperature: -40°C to 60°C
Housing material: Zinc die-cast
Mounting clamps included

WT12-2 Foreground suppression

Erwin Sick. Background suppression (Red light)

Erwin Sick - Germany
Background suppression
Range: 20-250mm
Supply: 10-30VDC
Red light source
Output: PNP or NPN
Light and Dark switching
Connection: 2mtr cable or M12 plug
Enclosure: IP 67
Temperature: -40°C to 60°C
Housing material: Zinc die-cast
Mounting clamps included

WT12-2 Background suppression

Erwin Sick. Background suppression (Infrared light)

Erwin Sick - Germany
Background suppression
Range: 20-250mm
Supply: 10-30VDC
Infrared light source
Output: PNP or NPN
Light and Dark switching
Connection: 2mtr cable or M12 plug
Enclosure: IP 67
Temperature: -40°C to 60°C
Housing material: Zinc die-cast
Mounting clamps included

WT12-2 Background suppression (IR)

Erwin Sick. Diffuse energetic 1500mm or 3200mm.

Erwin Sick - Germany
Proximity/diffuse, energetic mode
Model 270 Range: 15-1500mm - Red light source
Model 280 Range: 10-3200mm - Infrared light source
Supply: 10-30VDC
Output: NPN or PNP
Light/dark switching
Connection: terminal chamber via gland or M12 plug
Enclosure: IP 67
Temperature: -25 °C to 55 °C
Housing material: ABS
Mounting bracket included

WT260 Energetic DC

Erwin Sick. Diffuse energetic 1700mm or 3500mm.

Erwin Sick - Germany
Proximity/diffuse, energetic mode
Model 270 Range: 5-1700mm - Red light source
Model 280 Range: 10-3500mm - Infrared light source
Supply: 12-240VDC, 24-240VAC
Output: Relay, 3A
Light-switching
Connection: terminal chamber via gland
Enclosure: IP 67
Temperature: -25 °C to 55 °C
Housing material: ABS
Mounting bracket included

WT260 Energetic UC