SICK VL18-4P3740 Photoelectric Retro-Reflective Sensor

SICK VL18-4P3740 Photoelectric Sensor – Long-Range Retro-Reflective Detection

The SICK VL18-4P3740 photoelectric retro-reflective sensor is designed to deliver dependable object detection over extended distances, reaching up to 3.7 meters. Its compact M18 cylindrical housing and visible red LED make alignment fast and intuitive, even in busy industrial environments. With adjustable sensitivity and a stable optical axis, it maintains consistent performance across varied materials and changing ambient conditions. Built for harsh use with an IP67 enclosure and rapid 2 ms response time, it enhances productivity in packaging, logistics, and automated handling systems by ensuring reliable, repeatable detection.

The VL18-4P3740 combines strong optical precision with a durable build to support demanding automation work. Its fine-tuning potentiometer allows installers to optimize detection in seconds, and the polarizing filter helps it accurately detect reflective or glossy surfaces. The PNP switching output, selectable light/dark mode, and M12 connector make integration straightforward for a wide range of machines. With a wide operating temperature range and components designed for long service life, this sensor reduces maintenance needs and minimizes false triggers, keeping systems stable and efficient in continuous operation.

Why SICK VL18-4P3740?

The SICK VL18-4P3740 is built for engineers who need fast, reliable detection without constant fine-tuning. Its long sensing range, stable optical design, and quick response make it a dependable choice for machines that cannot afford hesitation. Whether used in compact equipment or large-scale automation, it delivers consistent performance with minimal setup effort.

What Problem Does It Solve?

This sensor eliminates inconsistent detection caused by distance changes, shiny surfaces, vibration, or fluctuating ambient light. It ensures objects are detected precisely even when conditions aren’t ideal. By reducing false triggers, misreads, and downtime, it keeps production lines flowing smoothly and helps machines make more confident decisions in real time.

Key Features & Specifications – SICK VL18-4P3740: 6013623

Download SICK VL18-4P3740 (6013623) Datasheet

Commercial Information – SICK VL18-4P3740 (6013623)

The Applications for the SICK VL18-4P3740

1. High-Speed Packaging Line Carton Detection

On packaging lines where cartons move rapidly across conveyors, the VL18-4P3740 excels at identifying the presence of boxes before they reach sealing or labeling stations. Its long sensing range allows the reflector to be installed safely on the opposite side of the conveyor without interfering with mechanical parts. The fast 2 ms response ensures even smaller or irregular cartons are reliably detected at high throughput speeds. The adjustable sensitivity helps compensate for variations in packaging material, such as glossy laminated cartons or darker recycled cardboard. This stable detection reduces misfeeds, prevents equipment jams, and keeps automated packaging equipment running consistently.

2. Pallet Position Verification in Automated Warehouses

Automated storage systems often need to verify whether a pallet has fully arrived at a pickup or drop-off location. The VL18-4P3740 is well-suited for this task because its retro-reflective design provides strong and consistent signals across long distances. Warehouses frequently deal with pallets made from different woods, plastics, or composite materials that can be uneven or partially damaged. The sensor’s polarizing filter helps eliminate false reflections caused by stretch wrap, glossy tape, or metallic straps commonly found on pallets. By delivering stable position confirmation, it ensures automated shuttles and conveyors synchronize properly, reducing delays and improving warehouse throughput.

3. Bottle Flow Monitoring in Beverage Filling Lines

In bottling environments, long rows of filled or empty bottles pass through inspection and capping stations at high speed. The VL18-4P3740 offers reliable detection through its clear red LED beam, which simplifies alignment even in tight spaces between conveyor rails. Bottles made of glass or plastic often create unpredictable reflections, but the sensor’s optical design helps maintain accuracy even when surfaces are curved or highly transparent. Its rapid switching frequency ensures individual bottles are detected without overlap, allowing filling, labeling, and reject mechanisms to operate with precise timing. This contributes to reduced wastage, smoother line flow, and fewer production interruptions.

4. Machine Safety Interlock Confirmation on Small Automation Cells

In compact automated machines, doors, guards, or sliding mechanisms often require sensor-based confirmation to ensure they are properly positioned before the machine activates. The VL18-4P3740’s slim M18 form factor makes it easy to mount in tight areas without redesigning the enclosure. Its long optical reach allows switching points to be placed further away from moving parts, improving mechanical reliability. Because the sensor maintains strong performance under vibration, it remains stable even when equipment cycles repeatedly. Its sensitivity adjustability allows it to reliably detect small reflectors attached to moving or angled guard doors. This ensures safe operation and minimizes false stops in automated cells.

Related Products & Accessories – SICK VL18-4P3740 (6013623)

Contact Us

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.