Sick WTF12-3P2431 Photoelectric Sensor
Sick WTF12-3P2431 is a photoelectric proximity sensor with 30–175 mm sensing range, PNP output, and foreground suppression. This Sick photoelectric sensor from the W12 series uses visible red LED at 640 nm with a 2 mm light spot, operates on 10–30 V DC, supports light/dark switching, delivers ≤330 µs response time at 1,500 Hz, and features IP66/IP67/IP69K protection with an M12 4-pin metal housing.
| Brand | Sick |
| Product Type | Photolectric Sensor |
| Model Number | WTF12-3P2431 |
Sick WTF12-3P2431 Photoelectric Sensor – Technical Specifications
| Specification | Value |
|---|---|
| Functional principle | Photoelectric proximity sensor |
| Functional principle detail | Foreground suppression |
| Sensing range max. | 30 mm ... 175 mm |
| Sensing range | 30 mm ... 175 mm |
| Polarisation filters | - |
| Light source | LED |
| Type of light | Visible red light |
| Light spot size (distance) | Ø 2 mm (60 mm) |
| Wave length | 640 nm |
| Adjustment | Potentiometer, 5 turns |
| Angle of dispersion | - |
| Special applications | Detecting flat objects |
| Items supplied | 2 x clamps BEF-KH-W12, incl. screws |
| Supply voltage UB | 10 V DC ... 30 V DC |
| Ripple | < 5 Vpp |
| Current consumption | 45 mA |
| Protection class | III |
| Digital Output type | PNP |
| Switching mode | Light/dark switching |
| Signal voltage PNP HIGH/LOW | > Uv - 2,5 V / ca. 0 V |
| Output current Imax. | ≤ 100 mA |
| Response time | ≤ 330 µs 4) |
| Switching frequency | 1,500 Hz 5) |
| Output function | Complementary |
| Special feature | - |
| Housing | Rectangular |
| Dimensions (W x H x D) | 15.6 mm x 48.5 mm x 42 mm |
| Connection | Male connector M12, 4-pin |
| Housing material | Metal |
| Front screen material | Plastic, PMMA |
| Enclosure rating | IP66, IP67, IP69K |
| Ambient operating temperature | –40 °C ... +60 °C |
| Ambient temperature, storage | –40 °C ... +75 °C |
| Weight | 120 g |
The WTF12-3P2431 Sick 175mm Photoelectric Sensor is a photoelectric proximity sensor designed for precise detection in industrial automation systems. It operates with foreground suppression, a 30–175 mm sensing range, and a PNP digital output using a visible red LED light source. The device runs on 10–30 V DC and belongs to the Sick W12 series, supporting controlled object detection in automation environments.
In industrial applications, the WTF12-3P2431 Sick 175mm Photoelectric Sensor is used on conveyors, packaging machinery, automated assembly lines, and inspection stations. Foreground suppression enables reliable detection of flat objects while minimizing background interference. The fast response time and defined switching frequency support stable operation in continuous processes, while the compact rectangular housing allows easy integration into space-constrained automation setups.
The WTF12-3P2431 from Sick combines defined optical behavior, electrical stability, and mechanical protection for dependable industrial use. With PNP output compatibility, wide operating temperature tolerance, and high enclosure ratings, it integrates reliably into standard control systems. As part of the W12 series, this Sick photoelectric sensor meets established industrial automation requirements where consistent proximity sensing and durability are required.
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