Sick WTB12-3P1131 Photoelectric Sensor
Sick WTB12-3P1131 is a photoelectric proximity sensor with 350 mm sensing range and PNP output operation. This Sick photoelectric sensor from the W12 series uses background suppression, visible red LED light at 640 nm, supports light/dark switching, delivers ≤330 µs response time, and operates on 10–30 V DC with IP66/IP67/IP69K protection.
| Brand | Sick |
| Product Type | Photolectric Sensor |
| Model Number | WTB12-3P1131 |
Sick WTB12-3P1131 Photoelectric Sensor – Technical Specifications
| Specification | Value |
|---|---|
| Functional principle | Photoelectric proximity sensor |
| Functional principle detail | Background suppression |
| Sensing range max. | 20 mm ... 350 mm |
| Sensing range | 20 mm ... 350 mm |
| Polarisation filters | - |
| Light source | LED |
| Type of light | Visible red light |
| Light spot size (distance) | Ø 6 mm (200 mm) |
| Wave length | 640 nm |
| Adjustment | Potentiometer, 5 turns |
| Angle of dispersion | - |
| Special applications | - |
| 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 | Cable, 4-wire, 2 m |
| 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 | 200 g |
The WTB12-3P1131 Sick 350mm PNP Photoelectric Sensor is a background suppression photoelectric proximity sensor designed for controlled short-range detection. This model offers 350 mm sensing distance, PNP output, 330 µs response time, and visible red LED illumination. As part of the Sick W12 series, it is engineered for consistent performance in industrial automation environments requiring precise object discrimination.
In conveyor systems, packaging machines, assembly stations, and automated handling equipment, the WTB12-3P1131 Sick 350mm PNP Photoelectric Sensor ensures stable detection of objects at defined distances. Background suppression helps reduce false switching caused by reflective surfaces or distant backgrounds, while the fast switching frequency supports reliable operation in continuous-motion production lines.
The WTB12-3P1131 from Sick combines robust electrical characteristics with durable mechanical construction. Its metal housing, cable connection, and wide operating temperature range support long-term industrial deployment. Integrated within the W12 series, this Sick photoelectric sensor is suitable for automation applications requiring dependable background suppression, predictable output behavior, and proven sensor reliability.
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