Sick WLG4-3E1332 Miniature Photoelectric Sensor NPN

Miniature Photoelectric Sensor for Transparent

The Sick WLG4-3E1332 is a compact retro-reflective photoelectric sensor designed to detect transparent objects in industrial automation. Its 16 mm by 39.5 mm by 12 mm ABS housing fits tight machine spaces. The sensor operates on 10 V DC to 30 V DC supply voltage and provides an NPN dark-switching output with a 100 mA maximum load. It targets engineers who need reliable presence detection for clear materials such as glass or film.

Sensing Range and Visible Red PinPoint LED Limits

The visible red PinPoint LED at 650 nm wavelength produces a 75 mm light spot at 1.5 m distance. Maximum sensing range reaches 4.5 m while the specified operating range covers 0.02 m to 3.5 m with a reflector. Attenuation along the beam exceeds 8 percent and the reception angle is approximately 30 degrees. These optical characteristics define the practical detection zone for transparent targets in contaminated environments.

Cable Connection and Environmental Headroom

A 2 m PVC cable with three 0.14 mm² conductors and 3.4 mm outer diameter provides fixed wiring without a separate connector. The IP67 and IP66 enclosure ratings protect against dust and powerful water jets. Operating temperature spans –40 °C to +60 °C while storage extends to +75 °C. The 0.5 ms response time and 1,000 Hz switching frequency support high-speed counting tasks. Builders needing connectorised variants or longer cable runs must source alternative models.