SICK WL12-3P2431 1041436 Retro-reflective Photoelectric Sensor

This SICK WL12-3P2431 (1041436) is a compact, robust photoelectric sensor for retro-reflective detection. Housed in a metal (zinc die-cast) body rated IP66, IP67, and IP69K, it is built for demanding industrial conditions. It uses a visible red light (640 nm) with a built-in polarizing filter and offers reliable, long-range detection via an autocollimation optical system.

Applications:

• Logistics and warehousing: detection of packages and pallets on conveyor systems to optimize efficiency

• Packaging machinery: monitoring fill levels of bottles and cans; ensuring correct carton sealing

• Automotive industry: part detection in welding and assembly for precise positioning

• Pharmaceutical industry: detection of transparent ampoules and vials

• general automation and material handling

Specifications:

• Sensing range and detection: Retro-reflective, max. 0…7 m (with PL80A reflector) or 0…5 m sensing distance. Visible red light source (640 nm).

• Optical details: 15 mm × 48.5 mm × 42 mm metal housing, approx. 1.5° angle of dispersion. For reference: Ø100 mm light spot size at 3 m distance. Polarizing filter for challenging targets.

• Electrical specification: 10…30 V DC, ≤ 30 mA consumption. PNP output, light/dark switching selectable, ≤ 100 mA output current, 330 µs typical response time, switching frequency up to 1,500 Hz.

• Mechanical protection: IP66 / IP67 / IP69K ingress protection, –40°C…+60°C operating temperature.

• Connection & adjustment: M12, 4‑pin male connector. Sensitivity adjustable via a 5‑turn potentiometer.

• In the box: The sensor is delivered with two clamping brackets (BEF-KH-W12) and screws to facilitate mounting.

System Integration:

• This sensor belongs to the SICK W12‑3 series, known for its rugged metal housing and suitability for a wide range of industrial applications.

• The universal supply voltage (10…30 V DC) and the PNP output that can be configured for light/dark operation simplify integration.

• The IP69K rating, in combination with the ECOLAB and resistance tests, qualifies the sensor for use in food and high‑moisture / high‑pressure washdown areas.

Standards & Compliance:
UL‑Recognized (File No. NRKH.E181493), RoHS compliant. For detailed certificates, refer to the manufacturer’s official product documentation.

Related Products (this series):

• WL12‑3P2431 (1041436) – Retro‑reflective sensor (current model)

• WL12‑3P2451 – variant with different output or sensing parameter (same series family, adaptable selection)

• PL80A – Reflector required for maximum 7 m sensing range