Rechner Capacitive Proximity Sensor

 

Series: KAS-80

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1. General Description

 

This is a cylindrical capacitive proximity sensor from the Rechner KAS-80 series. It is designed for the non-contact detection of both metallic and non-metallic materials, making it highly versatile. Common applications include level sensing of liquids and bulk solids (e.g., granules, powders) through non-metallic container walls, or the presence detection of objects like wood, plastic, and glass.

This model features a non-flush (non-embeddable) design for maximum sensing range, a 24VDC supply, and a normally open output.

 

Key Features 🎯

 

• Capacitive Sensing: Detects a wide variety of materials, including liquids, powders, plastics, and metals.
• Adjustable Sensitivity: Typically features a potentiometer for fine-tuning the sensing distance to suit different materials and applications.
• Non-Flush Design: The protruding sensing face provides an extended detection range.
• Standard Connection: Equipped with a short pigtail cable and an industry-standard M12 connector for easy installation.
• Visual Status Indicator: An integrated LED provides a clear indication of the switching state.

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2. Technical Specifications

 

 

Electrical Data

 

Parameter	Value
Sensing Distance (Sn)	10 mm (Nominal, adjustable)
Operating Voltage	24 VDC (Typically a wider range like 10-30 VDC)
Output Function	NO (Normally Open)
Output Type	3-Wire DC (Typically PNP, can also be NPN)
Max. Load Current	≤ 200 mA (Typical)

 

Mechanical & Environmental Data

 

Parameter	Value
Housing Style	Cylindrical with mounting flange
Housing Material	Plastic (e.g., PBT, Makrolon)
Mounting	Non-flush / Non-embeddable
Enclosure Protection	IP67 (Typical)
Connection	M12 Male Connector, 4-pin
Ambient Temperature	-25°C to +70°C (Typical)

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3. Wiring (Typical for PNP NO)

 

The sensor uses a standard 3-wire DC configuration with an M12 connector:

• Pin 1 (Brown): Connect to +24V DC
• Pin 4 (Black): Connect to the Signal Input (Load)
• Pin 3 (Blue): Connect to 0V / GND

data sheet