Proximity Sensor | LJC18 Capacitive Type | 5mm NPN NO Switch

This OMCH capacitive proximity sensor detects both metal and non-metal items, like liquids, plastics, and wood. It's a useful cylindrical sensor for jobs where other sensors don't work. It senses things without touching them for many industrial automation needs. Features and Benefits - Finds many kinds of materials - Use it to sense wood, paper, glass, plastic, and liquids. This makes it useful for more than just finding metal. - Adjustable sensing range - You can set the detection distance to ignore container walls. This lets you use it to check liquid or powder levels through plastic without touching them. - Available with PNP or NPN output - Choose the right model for your control system. NPN is common for inputs that draw current (like many PLCs), while PNP is for inputs that get current. - M12, M18, and M30 body sizes - Pick the size that fits where you need to mount it. Detection distances go from 2mm up to 20mm for different tasks. Applications - Watching liquid levels in a non-metal tank for automatic filling. - Finding cardboard boxes on a packaging line. - Counting plastic bottles moving on a conveyor system. What It Is A proximity sensor is an industrial sensor that detects the presence of nearby objects without physical contact. This LJC18 model is a capacitive type proximity sensor, which means it works by detecting changes in capacitance caused by an object entering its electromagnetic field. This particular model features an NPN output type with a Normally Open (NO) switch configuration. It comes in a cylindrical shape and is available with various sensor diameters such as 12mm, 18mm, and 30mm. Key Uses & Applications Proximity sensors like the LJC18 are widely used in industrial automation and control systems. Their non-contact operation makes them ideal for tasks such as object detection on conveyor belts, counting parts, and position sensing of machinery components. The capacitive principle allows them to detect both metallic and non-metallic objects. Common applications include material handling, packaging, and assembly lines. The various detection distances, including 2mm, 5mm, 10mm, and 20mm, allow for flexibility in different setups. How to Choose When selecting a proximity sensor, consider the material of the object you need to detect and the required detection distance. This LJC18 model is a capacitive sensor, suitable for various materials. Evaluate if a Normally Open (NO) or Normally Closed (NC) output state is needed for your circuit logic, and whether a PNP or NPN output type is compatible with your control system. The sensor diameter, available in 12mm, 18mm, or 30mm, should match your mounting requirements. To test a proximity sensor, apply power and bring an object within its detection range; the output should change state.