The SICK WL8G-P1131 is a compact, self-contained retro-reflective photoelectric sensor from the versatile WL8G series. It is engineered for reliable object detection in standard industrial applications where space is a consideration. This sensor operates by emitting a light beam towards a dedicated reflector; an object is detected when it interrupts this beam path, preventing the light from returning to the receiver.
Compact and Robust Design: The sensor features a compact, rectangular plastic housing that allows for easy integration into machinery with limited space while maintaining durability in industrial environments.
Polarization Filter (Key Feature): This model is equipped with a polarization filter. This is a critical feature that allows the sensor to reliably detect shiny, reflective objects (like metallized packaging or polished surfaces) without false triggers. The filter ensures the sensor only recognizes light returned from its specific corner-cube reflector.
Retro-Reflective Sensing: Offers a longer sensing range than diffuse sensors while keeping the wiring simple, as only the sensor itself needs to be wired.
Visible Red Light Beam: Uses a visible red light beam, which simplifies the alignment process with the reflector during installation and setup.
Fixed Cable Connection: The model suffix suggests a fixed cable connection for a secure and reliable interface to the control system.
LED Status Indicator: Features an LED for clear visual confirmation of the switching status, aiding in setup and diagnostics.
Technical Specifications (General):
Sensing Principle: Retro-Reflective with Polarization Filter
Light Source: Visible red light
Sensing Range: Short to medium range (typically up to 1.5-3 meters, confirm with datasheet)
Operating Voltage: 10...30 V DC
Output Type: The "P" in the model number indicates a PNP (sourcing) output configuration.
Output Function: Light-On or Dark-On operation (typically selectable).
Connection: Fixed cable
Protection Rating: Typically IP67, making it resistant to dust and water ingress.
Typical Applications:
The WL8G-P1131 is designed for general industrial applications requiring reliable detection:
Package detection on conveyor systems
Object presence verification in assembly and packaging machinery
Door and gate control applications
Material handling equipment
Detection of shiny objects in various industrial processes