$ 126.04
SICK WL8-N1131 photoelectric sensor offers fast, reliable high-speed object detection in compact industrial automation and conveyor applications.
SICK WL8-N1131 photoelectric retro-reflective sensor is a compact industrial sensing device designed to deliver precise and stable object detection in high-speed automation systems. It addresses common challenges such as missed counts, inconsistent triggering, and limited installation space. By using visible red LED light with coaxial optics, the sensor maintains reliable detection over distances up to 3 m while reducing alignment sensitivity. Its fast signal processing enables accurate response even when objects move rapidly, making it well suited for conveyor lines, packaging machinery, and automated material handling where dependable detection is essential.
The WL8-N1131 provides consistent performance in environments where reflective surfaces, vibration, or tight mounting conditions often cause unreliable sensing. Its adjustable sensitivity allows fine tuning for different object sizes and materials, while selectable light or dark switching simplifies system integration. The slim rectangular housing fits easily into compact machines, helping designers save space without sacrificing performance. With a rugged IP67 enclosure and stable electrical characteristics, the sensor supports long-term operation, reduces downtime, and helps maintain production efficiency in demanding industrial applications.
The SICK WL8-N1131 is chosen when reliability, speed, and compact design must coexist in one sensor. It is engineered for machines where space is limited but performance cannot be compromised. With rapid response, stable optical alignment, and flexible switching logic, it adapts easily to different production tasks. Its robust construction supports continuous operation, helping system designers reduce unexpected stoppages while maintaining precise detection across varying materials and operating conditions in modern automated equipment.
The WL8-N1131 solves the recurring issue of inconsistent object detection in fast-moving or space-constrained industrial processes. In many systems, standard sensors struggle with signal instability, reflective targets, or short reaction windows. This model overcomes those challenges by delivering fast, repeatable switching and stable sensing, even at high conveyor speeds. It minimizes false signals, improves counting accuracy, and ensures dependable process control, ultimately protecting throughput and reducing costly production errors.
| Feature | Details | Benefit |
|---|---|---|
| Sensor Type | Photoelectric retro-reflective sensor | Ensures reliable object detection with a single sensing point and reflector |
| Optical Principle | Coaxial optics with autocollimation | Reduces alignment errors and improves detection stability |
| Light Source | Visible red LED, 650 nm | Easy visual alignment and consistent performance |
| Sensing Range | Up to 3 m (4 m maximum with reflector) | Supports medium-distance detection in industrial layouts |
| Response Time | ≤ 0.25 ms | Enables accurate detection of fast-moving objects |
| Switching Frequency | Up to 2,000 Hz | Ideal for high-speed conveyors and counting applications |
| Switching Output | NPN, light/dark selectable | Flexible integration with different PLC logic requirements |
| Sensitivity Adjustment | 270° potentiometer | Fine tuning for various object sizes and materials |
| Polarizing Filter | Integrated | Improves detection on shiny or reflective surfaces |
| Housing Dimensions | 11 × 31 × 20 mm | Compact design fits into tight installation spaces |
| Housing Material | ABS plastic with PMMA optics | Lightweight yet durable for industrial use |
| Protection Rating | IP67 | Reliable operation in dusty or humid environments |
| Supply Voltage | 10–30 V DC | Compatible with standard industrial power systems |
| Current Consumption | Approx. 30 mA (no load) | Energy-efficient operation |
| Operating Temperature | –25 °C to +55 °C | Suitable for a wide range of industrial conditions |
Download SICK WL8-N1131 (6033176) Datasheet
| Commercial Data | Details |
|---|---|
| EAN Number | 4047084163357 |
| Weight | 112 g |
| Country of Origin | China |
In automated packaging lines, products often move in very close succession, making accurate counting difficult with conventional sensors. The WL8-N1131 is effective in these environments because its rapid response and high switching capability allow it to register each item individually, even at high belt speeds. The retro-reflective operating principle helps maintain stable detection across longer distances, while adjustable sensitivity supports different box sizes and materials. This combination improves counting accuracy, reduces line stoppages caused by miscounts, and supports consistent output for downstream processes such as case packing and palletizing.
Automated warehouses depend on reliable confirmation that cartons are correctly positioned before transfer or lifting. The WL8-N1131 can be mounted in tight locations on frames or conveyors where space is limited. Its robust enclosure supports operation in dusty or vibration-prone areas commonly found in logistics facilities. Detection remains consistent even when cartons have printed or slightly reflective surfaces, helping control systems verify presence before movement. This prevents handling errors, protects mechanical equipment, and supports continuous, unattended warehouse operation with fewer interruptions.
On filling and capping equipment, accurate container detection is essential to avoid spills, rejected products, and unplanned downtime. The WL8-N1131 provides precise triggering even when containers move rapidly through the machine. Its selectable switching logic allows flexible integration with machine control systems, while stable optics help maintain alignment during routine maintenance. By ensuring that each container is correctly detected before the filling cycle begins, the sensor contributes to cleaner operations, reduced waste, and higher overall efficiency in production environments.
Automated assembly processes require confirmation that parts are correctly positioned before pressing, fastening, or joining operations begin. The WL8-N1131 is suitable for this task due to its consistent switching behavior and compact form factor. It can be installed close to fixtures where installation space is restricted, while sensitivity adjustment supports detection of small or dark components. Reliable position verification helps prevent defective assemblies, reduces tool damage, and improves overall product quality in high-volume manufacturing lines.
| Category | Model Name | Part Number | Benefits |
|---|---|---|---|
| Mounting Bracket | BEF-W100-A | 5311520 | Stainless steel mounting bracket for secure and vibration-resistant installation on machines or frames |
| Clamp Plate | BEF-KHS-N08 | 2051607 | Universal clamp plate enabling flexible mounting angles and quick sensor repositioning |
| Reflector Mount | BEF-WN-REFX | 2064574 | Dedicated reflector mounting bracket ensuring precise reflector alignment |
| Clamp Plate (Stainless Steel) | BEF-KHS-N11N | 2071081 | Corrosion-resistant clamp plate for harsh or washdown environments |
| Reflector | P250F | 5308843 | Fine triple reflector that extends sensing range and improves detection stability |
| Connector Cable | STE-0803-G | 6037322 | M8, 3-pin connection cable for fast electrical integration and secure signal transmission |
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Warranty – 1-year warranty for your peace of mind.
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