Maintenance teams planning replacements for WL12G-3B2531 frequently review Sick Laser Sensor, Sick Gtb6 P4211 and P&F Photoelectric Sensor to prevent downtime, checking availability and compatibility with existing systems.
Sick WL12G-3B2531 Photoelectric Sensor
The Sick WL12G-3B2531 Photoelectric Sensor offers a Photoelectric retro-reflective sensor , 0 m ... 4 m sensing range, LED light source, - output, and Male connector M12, 5-pin connection. Manufactured by Sick under the Sick Photoelectric Sensor category, this model belongs to the W12 Series.
| Brand | Sick |
| Product Type | Photolectric Sensor |
| Model Number | WL12G-3B2531 |
Sick WL12G-3B2531 Photoelectric Sensor β Technical Specifications
| Specification | Value |
|---|---|
| Functional principle | Photoelectric retro-reflective sensor |
| Functional principle detail | Autocollimation |
| Sensing range max. | 0 m ... 4 m |
| Sensing range | - |
| Polarisation filters | Yes |
| Light source | LED |
| Type of light | Visible red light |
| Light spot size (distance) | Γ 25 mm (1.5 m) |
| Wave length | 640 nm |
| Adjustment | Potentiometer, 11 turns |
| Angle of dispersion | Approx. 1.5Β° |
| Special applications | Detecting transparent 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 | 30 mA |
| Protection class | III |
| Digital Output type | PNP, NPN |
| Switching mode | Light switching, Dark switching |
| Signal voltage PNP HIGH/LOW | > Uv - 3 V / ca. 0 V |
| Output current Imax. | β€ 100 mA |
| Response time | β€ 330 Β΅s 4) |
| Switching frequency | 1,500 Hz 5) |
| Output function | - |
| Special feature | Detecting transparent objects |
| Housing | Rectangular |
| Dimensions (W x H x D) | 15.6 mm x 48.5 mm x 42 mm |
| Connection | Male connector M12, 5-pin |
| Housing material | Metal, zinc diecast |
| Front screen material | Plastic, PMMA |
| Enclosure rating | IP66, IP67, IP69K |
| Ambient operating temperature | β40 Β°C ... +60 Β°C |
| Ambient temperature, storage | β40 Β°C ... +75 Β°C |
| Weight | 120 g |
The Sick WL12G-3B2531 Photoelectric Sensor is a high-performance photoelectric retro-reflective sensor designed for industrial automation. Built with Sickβs advanced optical technology, the Sick 25mm Light Spot Photo Sensor ensures precise detection of objects, including transparent items, in demanding production environments.
The WL12G-3B2531 Photoelectric Sensor uses an autocollimation retro-reflective principle with polarization filters, providing a sensing range of up to 4 m. Its LED light source emits a visible red beam at 640 nm with a 25 mm spot size at 1.5 m, delivering high accuracy for transparent object detection. The device operates on a 10β30 V DC supply, with low 30 mA current consumption, and supports both PNP and NPN outputs up to 100 mA. With a switching frequency of 1,500 Hz and a response time of 330 Β΅s, it is suitable for high-speed automation processes. Engineers benefit from light/dark switching modes and fine sensitivity adjustment via an 11-turn potentiometer. The rugged metal housing with IP66, IP67, and IP69K protection ensures reliability even in washdown and harsh environments, while the M12, 5-pin connector simplifies installation. These specifications make the Sick WL12G-3B2531 a trusted solution for modern automation lines.
In real-world applications, the Sick WL12G-3B2531 Photoelectric Sensor is widely used in bottling plants, packaging machines, and conveyor systems where reliable detection of transparent or reflective objects is essential. Maintenance engineers value its robust enclosure and fast response for minimizing downtime, while junior engineers appreciate the simple setup and intuitive adjustment. Senior engineers depend on its high switching speed and stable performance to ensure efficiency during continuous operation. The Sick 25mm Light Spot Photo Sensor also reduces false detections in environments with reflective packaging films or glass surfaces. For students and trainees, the WL12G-3B2531 serves as a practical example of how optical sensors improve productivity, safety, and process reliability. Combining high-speed response, rugged construction, and accurate detection, the Sick WL12G-3B2531 Photoelectric Sensor is a preferred choice for industries worldwide.
For more information, the Sick WL12G-3B2531 is supported with a complete datasheet and manual containing wiring diagrams, installation guidelines, and performance specifications. Engineers and buyers frequently review the WL12G-3B2531 price from authorized Sick distributors before procurement to plan cost-effectively. Access to the official Sick WL12G-3B2531 datasheet and WL12G-3B2531 manual ensures confident system integration and long-term reliability. This combination of trusted documentation, strong technical support, and proven industrial performance makes the Sick WL12G-3B2531 Photoelectric Sensor a dependable solution for automation projects.

