Capacitive Proximity Sensor

SUCH capacitive proximity sensor is a non-contact switch widely used for detecting metals and non-metals, such as liquids, powders, plastics, wood, and glass. They are ideal for industrial automation where reliable object detection or level monitoring is required. These proximity sensors offer high versatility compared to inductive models and are essential in manufacturing, packaging, and process control.

Working Principle & Output Types

The capacitive proximity switch generates an electrostatic field at its sensing face, and when a target enters this field, the change in capacitance triggers the output. This simple yet reliable working principle ensures accurate detection even in dusty or humid environments, while multiple output types—such as PNP/NPN, NO/NC, and 2-wire/3-wire configurations with adjustable sensitivity—make it easy to integrate with PLCs and various industrial control systems.

This series includes a full range of cylindrical and square capacitive proximity sensors designed for different installation needs and environmental conditions.  M12/M18/M24, and M30 capacitive proximity switches provide flexibility for compact machinery, standard automation equipment, and heavy-duty industrial setups. Square and IP67-rated models are available for applications requiring enhanced sealing performance and robust environmental resistance.

Key Features & Advantages

SUCH capacitive proximity sensors deliver stable detection performance and long service life. Their ability to detect almost any material makes them a powerful choice for applications where inductive sensors cannot work.

Main Features:

• Detects metals, plastics, liquids, powders, and granular materials
• Reliable performance unaffected by object color or texture
• Strong resistance to moisture, dust, and oil (IP67 available)
• High accuracy and sensitivity adjustment
• Suitable for confined spaces and demanding industrial environments

Capacitive Proximity Sensor Applications

These capacitive proximity sensors are widely used as level detectors, material presence sensors, and automation switches across multiple industries. They provide reliable monitoring for liquids, powders, and pellets, and support material detection on packaging and conveyor systems. With the ability to sense plastics, paper, glass, wood, and other non-metallic materials, they are well-suited for automation applications in the food, chemical, textile, and logistics fields.