The Sick WLG4S-3V2232V (Part no. 1046447) is a robust and compact photoelectric sensor built for demanding industrial environments where hygiene, precision, and reliability are critical. As part of the W4 Inox sensor family, it combines Sick’s advanced optical sensing technology with a rugged stainless-steel housing, making it ideally suited for industries such as food and beverage, pharmaceuticals, and packaging, where harsh washdown procedures and strict hygiene standards are required.

This model operates using the retro-reflective principle with autocollimation. Unlike conventional retro-reflective sensors, autocollimation allows detection of objects without a minimum distance, meaning objects can be detected directly in front of the sensor face. This feature simplifies installation in confined or complex machine layouts while ensuring precise object recognition at all ranges.

Equipped with a visible red PinPoint LED, the WLG4S-3V2232V delivers a sharply focused light spot that ensures accurate and repeatable detection. Its standard sensing range reaches up to 3 m, with a maximum range of 5 m when paired with a reflector. This versatility makes it suitable for a wide variety of tasks, from detecting small parts on conveyors to monitoring transparent packaging films or glass containers. The LED’s defined spot also makes sensor alignment quick and straightforward, reducing setup time and potential alignment errors.

The housing of the sensor is constructed from V4A stainless steel (316 L), which is resistant to corrosion, chemicals, and high-pressure cleaning. Rated to IP66, IP67, and IP69K, the device can withstand both dust ingress and rigorous cleaning processes, including high-temperature, high-pressure water jets. This ensures long service life and reliable operation even in the toughest production environments.

From a performance standpoint, the WLG4S-3V2232V integrates a versatile PNP output with both light-on and dark-on switching options. It provides fast response times and high switching frequencies, making it suitable for modern, high-speed production lines. The sensor also incorporates a teach-in function for straightforward setup, along with Sick’s AutoAdapt technology, which automatically compensates for contamination or gradual changes in the sensing environment. This guarantees stable performance over time, even when operating conditions fluctuate.

Despite its rugged design, the WLG4S-3V2232V remains compact and lightweight, with dimensions of approximately 15 × 45 × 22 mm and a weight of around 40 g. Its electrical connection is provided through an M8 4-pin connector, and it operates on a 10–30 V DC supply with low current consumption.

In summary, the Sick WLG4S-3V2232V combines advanced optical detection, stainless-steel durability, and ease of operation. It is the ideal choice for industries requiring reliable detection performance in environments where hygiene and washdown resistance are as critical as precision and speed.