LJC18A3-B-Z/BX M18 capacitive proximity sensor

Overview

The LJC18A3-B-Z/BX is a robust M18 capacitive proximity sensor designed for non-contact detection of both metallic and non-metallic objects, including liquids, powders, and granular materials. With an adjustable sensing distance of up to 8 mm (10 mm typical) and a wide 6-36 VDC supply range, this sensor is a versatile solution for industrial automation, level monitoring, and position sensing. Its non-shielded (non-flush) design allows for flexible mounting, and its durable construction ensures reliable performance in demanding environments.

Key Features

• Capacitive Sensing Technology: Detects metallic and non-metallic targets, including liquids, plastics, and powders.
• Adjustable Sensing Distance: 0-8 mm via potentiometer for precise application tuning.
• Wide Operating Voltage: 6-36 VDC, compatible with most industrial control systems.
• Non-Shielded (Non-Flush) Mounting: Allows for flush or non-flush installation flexibility.
• High Output Current: Up to 300 mA for direct control of relays or PLC inputs.
• Robust M18 Housing: Threaded cylindrical body for easy mounting and durability.
• LED Indicator: Visual status indication for easy setup and troubleshooting.
• Reverse Polarity & Overcurrent Protection: Ensures long service life and reliability.

Technical Specifications

• Model Number: LJC18A3-HZ/BX
• Supply Voltage: 12-24 VDC (6-36 VDC)
• Setting Distance: 0-8 mm (adjustable)
• Detection Distance: 10 mm ±10%
• Installation Type: Non-shielded
• External Dimensions: M18 x 1 x 60 mm (threaded)
• Rated Output Current: N.P Type: 300 mA max; D Type: 200 mA max; AC Type: 400 mA
• Standard Detected Object: Iron SPCC (50x50x1 mm)
• Output Type: NPN/PNP (depending on model variant)

Applications & Use Cases

• Industrial Automation: Presence detection, part counting, and positioning on assembly lines.
• Level Monitoring: Detection of liquid levels in tanks, hoppers, and reservoirs.
• Material Handling: Sensing of powders, granules, and bulk solids in chutes or bins.
• Packaging Machinery: Detecting containers, bottles, or packaged goods.
• Robotics: End-of-arm tooling for object detection and gripper control.

What's Included

• 1x LJC18A3-B-Z/BX Capacitive Proximity Sensor
• 1x User Manual (English/Chinese)

Compatibility

• Compatible with PLCs, microcontrollers (Arduino, Raspberry Pi, etc.), and industrial relays.
• Works with 6-36 VDC power supplies; ensure output type (NPN/PNP) matches your control system.

MOKWN Recommendation

For Egyptian makers and engineers, the LJC18A3-B-Z/BX is an excellent choice for projects requiring non-contact detection of liquids or non-metallic objects. Its adjustable sensitivity and robust build make it ideal for both educational and industrial applications. Pair it with a compatible PLC or Arduino shield from MOKWN for a complete automation solution.