Ring Inductive Proximity Sensor (3mm Hole Diameter)

Ring Inductive Proximity Sensor (3mm Hole Diameter) is engineered for reliable detection of metal objects passing through a compact sensing ring. This inductive metal detection module operates from a wide 6–36V power supply and delivers a stable NPN normally‑open output for integration into automation systems, inspection equipment, and industrial monitoring setups. High‑speed response below 1ms enables accurate sensing of fast‑moving metallic components such as screws or wires traveling through the detection loop. A durable brass nickel‑plated housing combined with IP66 protection ensures dependable performance in demanding environments, making this ring‑style proximity detector suitable for both indoor machinery and outdoor installations.

Figure: Ring Inductive Proximity Sensor

High‑Speed Metal Detection for Moving Parts

This inductive sensing ring delivers a response time of less than 1ms with a switching frequency up to 300Hz, enabling accurate detection of rapidly moving metal objects. Small conductive components such as screws, washers, nuts, and wire segments passing through the ring opening can be identified with high precision. Such performance makes this industrial proximity detector particularly effective in automated assembly lines, wire processing equipment, and motion‑based inspection systems where fast detection and reliable triggering are essential.

Adjustable Sensitivity with Visual Status Indication

An onboard sensitivity adjustment knob allows fine tuning of detection range and responsiveness based on target size and installation conditions. Clockwise rotation increases sensitivity, enabling flexible adaptation to different metal detection tasks. A built‑in LED indicator provides immediate visual confirmation when a metallic object enters the sensing field, simplifying calibration and troubleshooting during installation. This combination of adjustable sensing and clear feedback improves operational reliability in automated monitoring and quality control applications.

Rugged Industrial Housing with Environmental Protection

Durability is ensured through a brass nickel‑plated flame‑retardant enclosure designed to resist corrosion and mechanical stress. The sealed structure achieves an IP66 protection rating, protecting internal electronics from dust and water exposure in industrial environments. Stable operation is maintained across a wide temperature range of -25℃ to 65℃ and humidity levels between 35–95%HR. Such environmental resilience allows deployment in manufacturing workshops, outdoor equipment, and harsh industrial locations.

This ring‑style inductive proximity sensor is well suited for detecting small metal parts, monitoring wire continuity, identifying broken wires, and preventing material jams in automated equipment. Reliable performance, adjustable sensitivity, and rugged construction make this sensing solution valuable for industrial automation, production line monitoring, and equipment safety systems.