SICK WTB9L-3N2261 Laser Photoelectric Sensor

Key Features & Specifications – SICK WTB9L-3N2261: Article No. 1062523

Download SICK WTB9L-3N2261 (1062523) Datasheet

Commercial Information – SICK WTB9L-3N2261: Article No. 1062523

The Applications

1. Precision Detection in High-Speed Electronic Assembly

In automated PCB assembly lines, miniature parts such as resistors or connectors travel at high speed. The WTB9L-3N2261 laser sensor ensures each component is detected with pinpoint accuracy, even on reflective metal trays. Its fine laser spot and rapid response prevent missed detections, while background suppression minimizes false triggers from conveyors or fixtures. This precision allows smooth, uninterrupted operation and reduces costly downtime caused by misfeeds or missing parts.

2. Cap Presence Verification in Beverage Filling Systems

In beverage production, detecting whether a bottle is properly capped can be challenging under wet and reflective conditions. The WTB9L-3N2261 reliably identifies cap presence and alignment by filtering out reflections from shiny bottle surfaces. Its rugged IP69K housing withstands washdown cleaning, and the precise laser focus eliminates background interference. This ensures consistent quality control, fewer false rejections, and faster inspection speeds—ideal for bottling lines demanding high throughput and hygienic reliability.

3. Product Verification in Transparent Packaging

When checking items sealed in clear plastic or film packaging, standard sensors often struggle with reflections. The WTB9L-3N2261 overcomes this challenge using background suppression and a concentrated laser beam that accurately detects objects inside transparent or glossy wrappers. This capability ensures every blister pack or pouch contains the correct product without needing camera-based systems. It helps manufacturers maintain consistent packaging quality, reduce inspection complexity, and minimize product waste.

4. Robotic Alignment and Position Control

In robotic assembly and precision positioning applications, even small alignment errors can lead to rejects. The WTB9L-3N2261 laser sensor helps robots locate edges, holes, or fiducial marks with extreme precision, regardless of surface texture or lighting conditions. Its compact form factor and high-speed switching make it ideal for integration on moving robotic arms. By delivering exact positional feedback, it enhances assembly accuracy, reduces rework, and boosts the overall efficiency of automated manufacturing cells.