$ 195.27
SICK WTB250-2P2451 photoelectric sensor with background suppression ensures precise object detection up to 1,000 mm in demanding industrial automation applications.
The SICK WTB250-2P2451 photoelectric sensor with background suppression is a compact industrial proximity sensor engineered for accurate object detection where backgrounds must be reliably ignored. It uses visible red light to detect objects within a 200 to 1,000 mm range while maintaining stable switching performance even when target colors or reflectivity change. Designed for automated machinery and production lines, this sensor helps eliminate false detections caused by reflective surfaces. Its robust IP67-rated housing and compact rectangular form make it well suited for demanding industrial environments with limited installation space.
The SICK WTB250-2P2451 improves process reliability by separating the detected object from the background, ensuring consistent sensing results in real production conditions. This capability is especially valuable in packaging, conveyor, and assembly systems where objects move at different speeds and distances. Its fast response supports high-throughput applications, while simple sensitivity adjustment allows quick commissioning and fine tuning. The durable housing and stable electronics reduce maintenance needs and unplanned downtime, helping manufacturers achieve higher productivity and long-term operational stability.
Why SICK WTB250-2P2451?
The SICK WTB250-2P2451 is designed for engineers who need confidence in every detection cycle. Its background suppression technology ensures objects are detected precisely, not the surroundings behind them. Combined with a compact form factor, fast response, and industrial-grade durability, this sensor delivers stable performance in real production environments where space is limited, speeds are high, and reliability directly impacts output quality and efficiency.
What problem does it solve?
In many automation systems, reflective backgrounds, changing object colors, or inconsistent distances lead to false signals and process interruptions. The SICK WTB250-2P2451 eliminates these issues by clearly distinguishing the target from its background. This results in accurate switching, fewer false detections, and smoother operation on conveyors, packaging lines, and assembly machines, even under challenging and variable operating conditions.
| Feature | Details | Benefit |
|---|---|---|
| Sensing Principle | Photoelectric proximity sensor with background suppression | Reliably detects objects while ignoring reflective or complex backgrounds |
| Sensing Range | 200 mm to 1,000 mm | Supports flexible installation distances across multiple automation tasks |
| Light Source | Visible red LED | Easy alignment and stable detection of a wide variety of objects |
| Optical Design | Approx. 3° focus angle | Improves detection accuracy and minimizes interference from surrounding objects |
| Switching Output | PNP | Seamless integration with standard PLC and industrial control systems |
| Switching Mode | Light / Dark switching, selectable | Adapts easily to different logic requirements without changing hardware |
| Response Time | ≤ 3 ms | Ideal for fast-moving conveyor and high-speed production lines |
| Switching Frequency | Up to 160 Hz | Ensures reliable detection in dynamic, repetitive processes |
| Adjustment Method | 2-turn potentiometer with position indicator | Enables precise sensitivity tuning during setup and commissioning |
| Housing Design | Compact rectangular body | Saves space and simplifies installation in confined machine layouts |
| Protection Rating | IP67 | Reliable operation in dusty, humid, or washdown industrial environments |
| Supply Voltage | 10–30 V DC | Compatible with common industrial power standards |
| Current Consumption | Approx. 35 mA (no load) | Energy-efficient operation for continuous use |
| Connection Type | M12, 4-pin male connector | Quick, secure, and vibration-resistant electrical connection |
| Housing Material | ABS plastic with PMMA optics | Lightweight yet robust for long-term industrial use |
| Operating Temperature | –25 °C to +55 °C | Stable performance across a wide range of industrial conditions |
| Included Accessory | Mounting bracket (BEF-W250) | Faster installation without additional components |
Download SICK WTB250-2P2451 (6044692) Datasheet
| Commercial Data | Details |
|---|---|
| Weight | 143 g |
| Country of Origin | China |
In high-speed conveyor systems, cartons with different sizes, colors, and surface textures can cause inconsistent detection. The SICK WTB250-2P2451 overcomes this by using background suppression to focus only on the carton, ignoring conveyor rollers, frames, or reflective surfaces behind it. Its rapid response supports close product spacing without missed signals. The visible red light simplifies setup and alignment, even in tight spaces. As a result, carton counting, divert activation, and line control become more reliable, reducing sorting errors and unplanned interruptions in continuous material flow operations.
Packaging machinery requires precise confirmation that products are correctly positioned before sealing or labeling. The WTB250-2P2451 delivers stable detection by separating the target from metallic or glossy machine backgrounds that often cause false triggers. Adjustable sensitivity allows quick adaptation to different packaging formats without mechanical changes. Its sealed housing withstands dust, humidity, and routine cleaning. This ensures smoother machine operation, fewer rejected packages, and improved production efficiency across a wide range of packaging processes.
Automated assembly stations depend on accurate part presence verification to maintain product quality. The SICK WTB250-2P2451 detects components reliably regardless of color or surface finish, while ignoring fixtures and tooling in the background. Fast switching performance supports short cycle times, making it suitable for high-output assembly lines. The compact design allows installation close to tooling or robotic arms. This reduces the risk of missing components, prevents downstream defects, and supports consistent quality control throughout the assembly process.
Material handling and sorting systems often process mixed items on a single line, creating challenges for conventional sensors. The WTB250-2P2451 maintains stable detection across varying materials by eliminating background interference. Its dependable output supports accurate control of pushers, sorters, and transfer mechanisms. Durable construction ensures continuous operation in demanding industrial environments, while simple adjustment enables fast changeovers. This improves throughput, reduces mis-sorts, and increases overall system reliability in automated logistics operations.
| Category | Model / Accessory Name | Part Number | Compatibility & Benefit |
|---|---|---|---|
| Mounting Accessory | BEF-W250 Mounting Bracket | 5305850 | Dedicated steel bracket ensures stable alignment and vibration-resistant installation |
| Mounting Accessory | BEF-KHS-N11N Universal Clamp Plate | 2071081 | Flexible mounting on frames, profiles, or machine structures |
| Sensor Cable | YF2A14-050VB3XLEAX | 2096235 | 5 m PVC cable for standard industrial environments |
| Sensor Cable | YF2A14-050UB3XLEAX | 2095608 | 5 m PUR cable suitable for drag chain use and oil-exposed areas |
| Connector / Terminal Adapter | STE-1204-G | 6009932 | Enables clean connection to screw-type terminals in control cabinets |
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Warranty – 1-year warranty for your peace of mind.
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