Sick Retroreflective Photoelectric Sensor, Miniature Sensor, 4.5 m Detection Range

The stainless steel housing of the WL4SLG-3 Inox Hygiene photoelectric retro-reflective sensor, which is designed based on hygiene guidelines, is ideal for machines in which hygiene is already part of the design. The sensor mode can be switched between the detection of transparent and non-transparent objects at the touch of a button. This means that one device can be used to detect both transparent vials and metallic needles, for example. This reduces the variety of sensors needed. The precise, highly visible laser light spot ensures a high level of detection quality and facilitates alignment. Auto collimation technology ensures that the sensor can be relied upon to detect objects at close range as well as through small drilled holes.

The photoelectric sensors also feature anIO-Link function, so that initial system performance diagnostics can be carried out independently. Furthermore, IO-Link permits the integration of additional functions such as meters directly into the sensor. There is no need for complex control programming.

Stainless steel housing in hygiene design
Precise laser light spot, laser class 1, no blind zone
Latest SICK proprietary ASIC and laser technologies for outstanding background suppression and ambient light immunity
ECOLAB-certified, tested for IP66, IP67, IP68, and IP69K
Teach-in button to switch between detection of transparent and tiny non-transparent objects
IO-Link (optional)

Precise laser light spot for highly accurate switching behaviour
Stainless steel housing designed based on hygiene guidelines reduces the risk of micro bacterial contamination
Innovative hygienic design with unique patented membrane teach-in button and pin-cast D12 adapter shaft
High system throughput and minimum operating costs thanks to high-quality production and inspection
One sensor for detecting both transparent objects and the smallest non-transparent objects, The corresponding mode can be set
simply at the touch of a button for sensing ranges of up to 8 m, thus reducing the variety of sensors and saving on storage costs.

Precise object positioning – Detection of slices of sausage before primary packaging on a coarse-meshed, hygienic conveyor
Precise edge detection – Controlling the exact position of ampulla-tubes before final closing
Application are mostly in the pharmaceutical industry but also e.g. at the packaging, electronic and solar industry as well as food
and beverage industry

Product details cover the whole product family. For details on the specifications for this individual product, please refer to the datasheet.