Photoelectric Sensors – WL12G-3B2531

The WL12G-3B2531 from Sick’s W12 series is a compact, high-performance photoelectric retro-reflective sensor designed for reliable detection in complex environments. With autocollimation and coaxial optics, this sensor eliminates blind spots and excels in detecting transparent or reflective surfaces.

Featuring a bright visible red LED with a narrow beam angle and a highly adjustable 11-turn potentiometer, it ensures precise alignment and detection even in space-constrained applications. The rugged zinc diecast housing and IP-rated construction provide durability for harsh industrial settings, while the integrated polarization filter enhances object detection reliability.

This sensor is ready for plug-and-play integration with a standard M12 5-pin connector and comes equipped with clamps and screws for secure mounting.

Specifications:

• Series: W12

• Model: WL12G-3B2531

• Functional Type: Photoelectric retro-reflective sensor

• Optics Type: Autocollimation with coaxial optics

• Sensing Range: 0 m to 4 m (with PL80A reflector)

• Polarization Filter: Yes

• Light Source: LED (visible red light)

• Wavelength: 640 nm

• Light Spot Size: Ø 25 mm at 1.5 m

• Adjustment Mechanism: 11-turn potentiometer

• Angle of Dispersion: Approx. 1.5°

• Special Applications: Transparent object detection (glass, film, etc.)

• Housing Shape: Rectangular

• Housing Material: Zinc diecast metal

• Front Screen Material: PMMA (plastic)

• Connector Type: M12 male connector, 5-pin

• Dimensions (W x H x D): 15.6 mm x 48.5 mm x 42 mm

• Weight: 120 g

• Accessories Included: 2 x BEF-KH-W12 clamps with screws

• Service Life: Approx. 100,000 hours at 25°C