$ 215.74
Reliable object detection with the SICK WTF12-3N2431 sensor. Foreground suppression, fast response, and durable metal housing for stable industrial automation.
The SICK WTF12-3N2431 photoelectric sensor with foreground suppression is designed to deliver stable and accurate object detection in environments where reflective backgrounds often interfere with sensing reliability. It provides a controlled detection window from 30 mm to 175 mm, supported by a finely focused red LED beam for consistent performance on flat and low-contrast materials. Built within a compact W12 metal housing and sealed to IP66, IP67, and IP69K standards, it withstands demanding industrial conditions. Its adjustable potentiometer and fast switching capability make the sensor suitable for applications requiring precise alignment and dependable feedback in continuous production workflows.
The WTF12-3N2431 uses a refined optical system that isolates the target from the background, ensuring fewer false triggers even when surfaces vary in color or texture. Its rapid response time supports high-speed machinery, while complementary NPN outputs enhance integration flexibility. The sensor’s durable construction allows it to operate in harsh settings exposed to washdowns, vibration, and temperature shifts. With clear status indicators and smooth manual adjustment, setup becomes fast and intuitive. Its long operational lifespan and stable performance help reduce maintenance needs, improve detection accuracy, and support uninterrupted production throughput in a wide range of automation tasks.
The SICK WTF12-3N2431 stands out because it delivers exceptionally stable detection even when objects have low contrast or sit close to reflective backgrounds. Its precise optical design, compact metal housing, and high-speed switching make it a reliable choice for machine builders who want dependable performance without constant recalibration. It’s a sensor engineered to stay accurate in tough environments while remaining easy to set up and integrate.
The WTF12-3N2431 solves the common issue of unreliable detection caused by shiny surfaces, tight spaces, or inconsistent material colors on production lines. Traditional sensors often misread these conditions, but this model uses foreground suppression to focus only on the target—ignoring disruptive background reflections. The result is fewer false triggers, smoother machine operation, and higher confidence in object presence validation across fast-moving automated systems.
| Feature | Details | Benefit |
|---|---|---|
| Functional Principle | Photoelectric proximity sensor with foreground suppression | Eliminates background interference, improving detection accuracy |
| Sensing Range | 30 mm … 175 mm | Suitable for short-range precision tasks in conveyors, assembly lines, and packaging |
| Light Source | Red LED, 640 nm | Easy visual alignment and consistent performance across varying materials |
| Light Spot Size | Ø 2 mm at 60 mm distance | Fine spot enables accurate detection of small or flat objects |
| Adjustment Method | 5-turn potentiometer | Allows precise tuning for specific application distances |
| Switching Output | NPN, complementary | Flexible integration into existing control architectures |
| Switching Mode | Light/dark switching | Adapts to multiple sensing strategies in automation |
| Response Time | ≤ 330 µs | Ensures fast reaction in high-speed processes |
| Switching Frequency | 1,500 Hz | Ideal for rapid object movement and dynamic production systems |
| Supply Voltage | 10–30 V DC | Compatible with standard industrial power environments |
| Current Consumption | 45 mA | Energy-efficient operation |
| Housing Material | Metal body, PMMA optical window | Maximum durability in harsh industrial environments |
| Connection | M12 male connector, 4-pin | Universal, quick, and reliable cabling |
| Enclosure Ratings | IP66 / IP67 / IP69K | Withstands washdowns, dust, vibration, and outdoor exposure |
| Temperature Range | –40 °C to +60 °C | Operates reliably in cold storage, heated machines, and outdoor areas |
| Special Applications | Detecting flat or low-contrast objects | Reduces missed detections in packaging, labeling, and alignment tasks |
| MTTFD | 747 years | Long operational lifetime improves system reliability |
| Certifications | ECOLAB, cULus, China RoHS, EU/UK conformity | Suitable for global deployment and regulated industries |
| Included Accessories | 2× BEF-KH-W12 clamps with screws | Quick installation with no extra hardware required |
Download SICK WTF12-3N2431 (1041408) Datasheet
| Commercial Data | Details |
|---|---|
| EAN Number | 4047084140853 |
| Weight | 117 g |
| Country of Origin | Hungary |
Packaging lines often run at speeds where thin pouches, small cartons, or low-profile items pass quickly and inconsistently across the conveyor. Many sensors struggle when the product has a reflective finish or blends visually with the belt. The WTF12-3N2431 overcomes this by focusing solely on objects within a defined foreground zone, ignoring distracting reflections from machine frames or guide rails. Its compact light spot provides consistent detection even on extremely flat items. The fast switching capability allows each passing item to be recognized individually, helping prevent double feeds, missed counts, or clogged downstream equipment while supporting stable, uninterrupted production.
Print-and-apply stations need precise verification that each label has been dispensed, especially when working with glossy, colored, or transparent materials. The WTF12-3N2431 is well suited for this because it maintains a stable detection threshold regardless of label reflectivity. Its foreground suppression isolates the label edge from shiny peel plates or rollers behind it, ensuring highly consistent sensing. The tightly focused LED spot makes it possible to detect even narrow labels. With rapid response behavior, the system can immediately confirm label release, preventing machine hesitation, adhesive buildup, and misapplied labels while maintaining a smooth, continuous labeling workflow.
Automated assembly systems must verify that each part is correctly positioned before a tool, press, or robotic gripper engages. Small components—especially dark, textured, or irregular parts—often cause misreads with traditional sensors. The WTF12-3N2431 provides reliable detection because its optical design stays stable across wide variations in surface color or finish. Foreground suppression prevents the sensor from reacting to metallic fixtures or tool plates surrounding the part. Its sturdy housing makes it suitable for cramped or vibration-heavy assembly cells. With dependable feedback, the machine reduces placement errors, prevents tool collisions, and enhances overall assembly consistency.
Machines that handle sheet-based materials require accurate confirmation that a panel is ready before cutting or processing begins. When working with materials like cardboard, wood veneer, plastic sheets, or metal blanks, reflectivity and surface color often shift unpredictably. The WTF12-3N2431’s small, concentrated light spot detects the leading edge of flat materials with high precision, independent of surface tone or gloss. Its foreground suppression eliminates false signals from the machine bed or fixtures. This helps avoid empty strokes, protects cutting tools, reduces scrap, and ensures that each processing cycle begins only when the sheet is truly in position.
| Category | Model / Accessory Name | Part Number | Why It Matches (Benefit) |
|---|---|---|---|
| Mounting Bracket | BEF-WG-W12 | 2013942 | Ensures stable and secure mounting for WTF12-3N2431 in industrial environments |
| Universal Clamp Bracket Kit | BEF-KHS-N11N | 2071081 | Provides flexible alignment options and multi-angle installation for W12-series devices |
| Sensor Cable (PVC) | YF2A14-050VB3XLEAX | 2096235 | Suitable for standard industrial cabling needs for WTF12-3N2431 |
| Sensor Cable (PUR) | YF2A14-050UB3XLEAX | 2095608 | Resistant to oils, lubricants, and drag-chain use; ideal for demanding environments |
| Field-Wireable Connector | STE-1204-G | 6009932 | Enables custom cable lengths and on-site wiring for direct sensor connection |
For expert guidance before placing your order.
Warranty – 1-year warranty for your peace of mind.
Global Shipping – We ship worldwide with secure packaging and reliable delivery.
Technical Support – Contact us for professional after-sales technical assistance.
