SICK WTB12-3F2431 Photoelectric Sensor with Background Suppression
The SICK WTB12-3F2431 Photoelectric Sensor is a durable, high-performance sensor designed for accurate object detection in industrial automation. Using background suppression, it identifies objects at distances from 20 mm to 350 mm with consistent precision, even when surface color or brightness varies. Its visible red LED beam allows for quick alignment and setup, while the rugged metal housing and IP69K-rated protection ensure reliable operation in demanding conditions. Engineered to work between –40 °C and +60 °C, this sensor provides dependable performance in manufacturing, logistics, and packaging applications where accuracy and durability are crucial.
Equipped with SICK’s advanced sensing technology, the WTB12-3F2431 delivers stable detection in environments affected by light, dust, or vibration. Its adjustable potentiometer enables precise tuning of detection range for different materials and setups. The PNP output with light/dark switching offers flexible control integration, while its fast 330 µs response time supports high-speed production lines. The robust construction ensures resistance to moisture, chemicals, and impact, extending service life and reducing maintenance needs. With multiple certifications and proven reliability, it enhances safety, productivity, and efficiency in automated operations.
Why SICK WTB12-3F2431?
Because it combines precision, speed, and toughness in one compact device. The SICK WTB12-3F2431 stands out with intelligent background suppression, ultra-fast response, and industrial-grade protection. It’s built to deliver accurate detection every time, even in dusty, wet, or reflective environments—making it the go-to sensor for flawless automation performance.
What Problem Does It Solve?
It eliminates false detections and inconsistent readings caused by background objects, color variations, or harsh conditions. By ensuring stable object recognition and reliable switching, the WTB12-3F2431 helps manufacturers achieve higher productivity, reduce downtime, and maintain quality control—even in complex or high-speed production lines.
Key Features & Specifications – SICK WTB12-3F2431 (Article No. 1041420)
| Feature | Details | Benefit |
|---|---|---|
| Sensor Type | Photoelectric proximity sensor with background suppression | Accurate detection of objects regardless of color or surface reflectivity |
| Sensing Range | 20 mm to 350 mm | Flexible detection distance for various industrial setups |
| Light Source | Visible red LED (640 nm) | Easy alignment and visual confirmation during setup |
| Light Spot Size | Ø 6 mm at 200 mm | Provides focused and consistent detection precision |
| Response Time | ≤ 330 µs | Ideal for high-speed automation and conveyor systems |
| Switching Frequency | Up to 1,500 Hz | Ensures rapid detection and reliable signal output |
| Output Type | PNP, light/dark switching, complementary | Compatible with most PLC and control systems |
| Adjustment Method | 5-turn potentiometer | Allows fine-tuning of detection range for precise setup |
| Housing Material | Metal with PMMA front lens | High mechanical strength and long-term durability |
| Protection Class | IP66 / IP67 / IP69K | Resistant to dust, water jets, and high-pressure cleaning |
| Operating Temperature | –40 °C to +60 °C | Reliable performance across extreme environments |
| Connection Type | M12, 4-pin male connector | Quick installation and maintenance-free operation |
| Supply Voltage | 10 V DC to 30 V DC | Supports a wide range of industrial power systems |
| Current Consumption | 60 mA (typical) | Energy-efficient operation |
| Certifications | CE, UKCA, cULus, ECOLAB, China-RoHS | Ensures compliance with global industrial standards |
| MTTFD (Reliability) | 490 years | Exceptional lifetime for low maintenance and long service use |
Download SICK WTB12-3F2431 Datasheet
Commercial Information – SICK WTB12-3F2431 (Article No. 1041420)
| Commercial Data | Details |
|---|---|
| EAN Number | 4047084171314 |
| Weight | 116 g |
| Country of Origin | Hungary |
The Applications
1. Precise Detection in Packaging Lines
In modern packaging operations, reflective surfaces and colored boxes often cause inconsistent readings. The WTB12-3F2431 overcomes this with advanced background suppression, ensuring only the intended carton or object is detected while ignoring glossy conveyors or metal fixtures. Its red LED light simplifies alignment, and the IP69K-rated housing endures high-pressure cleaning. This combination guarantees reliable detection during high-speed packaging, reducing false triggers and product jams, while maintaining production consistency even in environments with moisture or reflective interference.
2. Smart Object Counting in Logistics Conveyors
Logistics facilities rely on accurate item counting as products of different sizes and colors move along conveyors. The WTB12-3F2431 provides stable detection with a high switching frequency of 1,500 Hz, ideal for fast-moving lines. Its compact metal body fits easily between rollers or narrow spaces, while the small light spot size ensures precise reading. This eliminates miscounts caused by mixed materials or uneven object surfaces, improving system accuracy and operational efficiency in sorting and distribution centers.
3. Reliable Part Detection in Automotive Assembly
Automotive assembly lines demand precise detection of small, metallic, or chrome-finished components. The WTB12-3F2431 ensures consistent part presence verification by filtering out reflections from surrounding metal structures. Its adjustable sensing range and tight light focus allow it to distinguish target parts even in glossy or variable lighting environments. The sensor’s rugged build withstands vibration and temperature variations common in production cells, minimizing detection errors and ensuring that every assembly step proceeds correctly.
4. Washdown-Resistant Sensing in Food Processing
Food and beverage lines require sensors that can handle frequent washdowns and humidity. The WTB12-3F2431’s stainless steel housing and IP69K protection make it perfectly suited for wet environments. It accurately detects bottles, trays, or film packages on damp conveyors without interference from water or condensation. The adjustable potentiometer allows fine-tuning when surfaces change from dry to wet, ensuring stable operation after cleaning cycles. This helps maintain hygiene standards while keeping the production flow uninterrupted and dependable.
Related Products & Accessories – SICK WTB12-3F2431 (Article No. 1041420)
| Category | Product Name / Type | Manufacturer Part Number | Part Number | Description / Benefit |
|---|---|---|---|---|
| Mounting Bracket | Mounting Bracket, Large (Stainless Steel) | BEF-WG-W12 | 2013942 | Strong stainless steel bracket designed for W11-2, W12-3, and W16 sensors. Provides vibration resistance and long-term durability in washdown environments. |
| Universal Clamp Plate | Plate N11N for Universal Clamp Bracket | BEF-KHS-N11N | 2071081 | Stainless steel plate and clamp kit for flexible, adjustable mounting positions. Suitable for quick realignment during maintenance. |
| Connector Cable (PVC) | Sensor/Actuator Cable – M12, 4-pin, 5 m PVC | YF2A14-050VB3XLEAX | 2096235 | Unshielded cable ideal for areas with mild chemicals. Ensures reliable data and power transmission for sensors. |
| Connector Cable (PUR) | Sensor/Actuator Cable – M12, 4-pin, 5 m PUR, Halogen-Free | YF2A14-050UB3XLEAX | 2095608 | Flexible, oil- and lubricant-resistant cable. Excellent for robotic and drag-chain applications due to superior bend endurance. |
| Straight Plug Connector | Male Connector M12, 4-pin Straight | STE-1204-G | 6009932 | Screw-type male connector for quick sensor integration. Provides stable electrical connection with minimal installation effort. |
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