SICK Photoelectric Diffuse Sensors
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Photoelectric Diffuse Sensors
Photoelectric diffuse proximity sensors detect objects directly in front of them by the detecting the sensor's own transmitted light reflected back from an object's surface.
- Diffuse Sensing Mode: Light from the emitter strikes a surface of an object at some arbitrary angle and is diffused from the surface at all angles. The object is detected when the reciever captures some small percentage of the diffused light. Also called the direct reflection mode or the photoelectric proximity mode.
- Background Suppression: Photoelectric proximity sensors with background suppression operate on the basis of the geometric relation between the sending and receiving elements. The sensor is set to detect an object lying on the plane of the sensing range. Signals from objects located behind the set sensing range plane are suppressed. The result is unparalleled detection reliability and ambient light immunity for small, transparent, or reflective objects in the area close to the machine – even with varying brightness or color contrasts.
- Background Blanking: For photoelectric proximity switches, background blanking 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.
- Energetic: The energetic photoelectric proximity sensor with adjustable sensitivity is the simplest photoelectric proximity sensor variant. A light-colored surface reflects more light than a dark one, so it can be detected at a greater distance. Detecting a dark object against a light background is a challenge for energetic sensors. The object is obscured by the brighter background due to its higher reflectivity. Light-colored objects against dark backgrounds are easier to detect.
| Detection Principle | Sensing Range | Type of Light | Switching Output | Adjustment | Switching Mode | Click for Price and Availability |
| Photoelectric proximity sensor | 35 to 140 mm | Visible red light | PNP | Mechanical spindle, 5 turns | Light/dark switching | GTB6-P0231S68 |
| Photoelectric proximity sensor | 50 to 220 mm | Visible red light | PNP | Mechanical spindle, 5 turns | Light/dark switching | GTB6-P0231S68 |
| Photoelectric proximity sensor | 50 to 220 mm | Visible red light | PNP | Mechanical spindle, 5 turns | Light/dark switching | GTB6-P1231 |
| Photoelectric proximity sensor, Background suppression | 4 to 90 mm | Visible red light | PNP | IO-Link | Light/dark switching | WTB2SC-2P3274A00 |
| Photoelectric proximity sensor, Background suppression | 5 to 150 mm | Visible red light | PNP/NPN | None | Light switching | HTB18-B4A2AAD06 |
| Photoelectric proximity sensor, Background suppression | 3 to 300 mm | Visible red light | PNP | Potentiometer, 270° | Light switching | GRTB18S-P2317 |
| Photoelectric proximity sensor, Background suppression | 5 to 300 mm | Visible red light | PNP | Potentiometer, right Sensing range Potentiometer, left None |
Light/dark switching | HTB18-P4A2BB |
| Photoelectric proximity sensor, Background suppression | 10 to 1000 mm | Visible red light | - | Teach-Turn adjustment BluePilot: For setting the sensing range | IO-Link for configuring the sensor parameters and Smart Task functions |
- | WTB16P-24161120A00 |
| Photoelectric proximity sensor, Background suppression | 20 to 150 mm | Visible red light | PNP | Potentiometer, 270° | Dark switching | GRTB18S-F1417 |
| Photoelectric proximity sensor, Background suppression | 20 to 350 mm | Visible red light | PNP | Potentiometer, 5 turns | Light/dark switching | WTB12-3P2431 |
| Photoelectric proximity sensor, Background suppression | 30 to 800 mm | Visible red light | PNP | Potentiometer, 5 turns | Light/dark switching | WTB11-2P2461 |
| Photoelectric proximity sensor, Background suppression | 20 to 200 mm | Visible red light | PNP | Potentiometer, 5 turns | Light switching | WTB9-3P3461S13 |
| Photoelectric proximity sensor, Background suppression | 20 to 600 mm | Infrared light | PNP | Potentiometer, 5 turns | Light/dark switching | WTB12-3P2411 |
| Photoelectric proximity sensor, Background suppression | 20 to 950 mm | Visible red light | PNP | Potentiometer, 5 turns | Light switching | GTB10-P4411S01 |
| Photoelectric proximity sensor, Background suppression | 30 to 1600 mm | Infrared light | Relay, electrically isolated | Potentiometer | Light/dark switching | WTB27-3R2611 |
| Photoelectric proximity sensor, Background suppression | 30 to 2000 mm | Infrared light | - | Teach-Turn adjustment BluePilot: For setting the sensing range | IO-Link for configuring the sensor parameters and Smart Task functions |
- | WTB26I-24161120A00 |
| Photoelectric proximity sensor, Background suppression | 100 to 2500 mm | Infrared light | PNP/NPN | Potentiometer | Light/dark switching | WT24-2B210 |
| Photoelectric proximity sensor, Background suppression | 100 to 2500 mm | Infrared light | Relay, electrically isolated | Potentiometer | Light/dark switching | WT24-2R210 |
| Photoelectric proximity sensor, Background suppression | 100 to 2500 mm | Infrared light | PNP/NPN | Potentiometer | Light/dark switching | WT24-2B410 |
| Photoelectric proximity sensor, Background suppression | 50 to 3800 mm | Visible red light | PNP/NPN | Potentiometer, 4 turns (2 x) | Light switching | WTT12L-B2566 |
| Photoelectric proximity sensor, Background blanking | 1 to 140 mm | Visible red light | PNP | Potentiometer, 270° (Sensing range) | Light/dark switching | VTF18-4P1240 |
| Photoelectric proximity Sensor, Background suppression, Optical time-of-flight | 50 to 3800 mm | Visible red light | PNP/NPN | Single teach-in button (2 x) | Light switching | WTT12L-B2563 |
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Photoelectric proximity Sensor, Background suppression, Optical time-of-flight |
50 to 3800 mm | Visible red light | PNP/NPN | Potentiometer, 4 turns (2 x) | Light switching | WTT12L-B2568 |
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Photoelectric proximity Sensor, Background suppression, Optical time-of-flight |
200 to 4000 mm | Visible red light | PNP | Potentiometer (2 x) | Light/dark switching | WTT280L-2P2536 |
| Photoelectric proximity sensor, Background suppression | 30 to 300 mm | Visible red light | PNP | Potentiometer | Light/dark switching | HTB18L-P4A5BB |
| Photoelectric proximity sensor, Background suppression | 60 to 900 mm | Infrared light | PNP | Potentiometer, 9 turns | Light/dark switching | RT-P3231 |
| Photoelectric proximity sensor, Background suppression | 100 to 1400 mm | Visible red light | PNP/NPN | Single teach-in button | Light/dark switching | WTT12L-B2522 |
| Photoelectric proximity sensor, Background blanking | 1 to 100 mm | Visible red light | PNP | Potentiometer, 270° | Light/dark switching | VTF180-2P42417 |
| Photoelectric proximity sensor, Energetic | 3 to 115 mm | Visible red light | PNP | Potentiometer, 270° | Light swithing | GRTE18S-P2317 |
| Photoelectric proximity sensor, Energetic | 5 to 400 mm | Infrared light | NPN | Single teach-in button (Sensing range) Manual, via Touch-Teach-in |
Light/dark switching | VTE18-4N4240V |
| Photoelectric proximity sensor, Energetic | 5 to 400 mm | Infrared light | PNP | Potentiometer, 270° (Sensing range) | Light/dark switching | VTE18-4P4740 |
| Photoelectric proximity sensor, Energetic | 10 to 400 mm | Visible red light | PNP | Potentiometer, 270° | Light swithing | GRTE18S-P234X |
| Photoelectric proximity sensor, Energetic | 1 to 650 mm | Visible red light | PNP | Potentiometer, 270° | Light switching | VTE180-2F32484 |
| Photoelectric proximity sensor, Energetic | 0 to 750 mm | Visible red light | PNP | Potentiometer | Light/dark switching | WT100-2P4439 |
| Photoelectric proximity sensor, Energetic | 0 to 750 mm | Visible red light | NPN | Potentiometer | Light/dark switching | WT100-2N4439 |
| Photoelectric proximity sensor, Energetic | 5 to 1000 mm | Infrared light | PNP | Potentiometer | Light/dark switching | HTE18-P1G1BB |
| Photoelectric proximity sensor, Energetic | 40 to 1400 mm | Infrared light | PNP | Potentiometer, 270° | Light/dark switching | GTE10-P1221 |
