Heschen M30 Capacitive Proximity Sensor SZC-M30-20AC NC 2W 20‑250VAC

Description

Product Overview

The Heschen M30 Capacitive Proximity Sensor (model SZC-M30-20AC) is engineered for high‑reliability environments where precise detection of dielectric materials is essential. Featuring a normally closed (NC) contact configuration, the sensor guarantees a secure circuit until the target object enters the detection field, at which point the contact opens to signal the presence of the material. Its operating voltage range of 20 to 250 VAC and a maximum current output of 400 mA make it compatible with a broad spectrum of control panels, PLCs, and safety circuits.

Physically, the sensor measures 5.51 × 5.51 × 1.57 inches and weighs just 4.94 oz, allowing for easy integration into compact enclosures. The robust housing is designed to withstand typical industrial contaminants, while the 30 mm mounting hole provides a secure anchor point for panel mounting. A generous 200 cm (78.7 in) cable length gives flexibility in routing to control cabinets or remote I/O modules.

Detection capability extends up to 20 mm (±10 %) and can sense any non‑metallic (dielectric) object, making it suitable for applications such as level detection in plastic containers, presence sensing of glass or ceramic components, and monitoring of non‑conductive moving parts. The sensor’s response time is fast enough to support high‑speed automation lines, and its temperature‑rated construction ensures stable performance across typical factory temperature ranges.

Usage

In modern manufacturing facilities, the M30 sensor finds utility across a variety of sectors. In food and beverage processing, it can detect the presence of plastic bottles on a conveyor, triggering downstream filling or labeling stations without direct contact. In the electronics industry, the sensor monitors the placement of insulating components, ensuring that assembly lines only advance when the part is correctly positioned.

For safety‑critical systems, the NC configuration provides a fail‑safe condition: if the sensor or its wiring fails, the circuit remains open, preventing unintended machine operation. This characteristic is especially valuable in emergency stop circuits, guard monitoring, and interlock systems where a loss of signal must halt equipment.

Installation is straightforward: the 2‑wire connection simplifies wiring diagrams, and the long cable permits placement of the sensor away from the control cabinet, reducing exposure to harsh environmental conditions. The sensor’s wide voltage tolerance accommodates both legacy equipment operating at lower voltages and newer installations that require higher voltage levels, eliminating the need for additional voltage conversion hardware.

Why Choose Us

Choosing the Heschen M30 sensor means selecting a product backed by over a decade of industrial sensor development. Heschen Electric’s commitment to quality is reflected in rigorous testing procedures, including vibration, shock, and humidity exposure, ensuring that each unit meets or exceeds industry standards. The sensor’s design incorporates a sealed internal capacitor that resists dust and moisture ingress, extending service life and reducing maintenance intervals.

Our after‑sales support includes a dedicated technical assistance team ready to help with integration, troubleshooting, and firmware updates. Customers benefit from a clear warranty policy and the option to receive replacement units quickly, minimizing downtime in critical production environments.

Furthermore, the sensor’s competitive pricing, combined with its robust feature set, delivers a high return on investment. By reducing false triggers and providing consistent performance, the M30 helps manufacturers improve overall equipment effectiveness (OEE) and maintain tighter quality control.

Key Features

• Accurate detection of any dielectric material up to 20 mm, improving process reliability.
• Normally closed (NC) output ensures fail‑safe operation for safety‑critical applications.
• Wide operating voltage range (20‑250 VAC) and 400 mA current capacity for versatile system integration.
• Compact 2‑wire design with 200 cm cable simplifies installation and reduces wiring complexity.
• Dedicated customer support and fast replacement service for minimal production interruption.

FAQ

What types of materials can the sensor detect?

The sensor is designed to detect any non‑metallic (dielectric) material, such as plastics, glass, ceramics, wood, and composite materials, within its specified detection distance.

Can the sensor be used in high‑temperature environments?

Yes, the sensor is rated for typical industrial temperature ranges and includes a sealed housing that protects internal components from heat and moisture, making it suitable for most factory conditions.

Is the sensor compatible with PLCs and other control devices?

Absolutely. With its 2‑wire NC output and a broad voltage range of 20‑250 VAC, the sensor can be directly interfaced with PLC inputs, relay modules, and safety interlock circuits without additional converters.

What is the recommended mounting method?

Mount the sensor using the 30 mm mounting hole on a flat panel or enclosure. Ensure the sensor face is oriented toward the target object and that the cable is routed to avoid sharp bends.

How does the warranty work?

Heschen Electric provides a standard one‑year warranty covering manufacturing defects. Contact our support team for warranty claims, and we will arrange a replacement or repair as needed.