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Capacitive sensors - Sensors for low dielectric media

  • Easy pushbutton adjustment in the application
  • Versions with automatic detection of PNP or NPN output loads
  • Normally closed and normally open outputs available
  • Clearly visible indication of the switching status
  • Resistant to electrostatic discharge


Use in the plastics industry

Wherever plastic granulates are conveyed and processed, capacitive sensors are used to monitor levels in pipes and in silos or through sight glasses in loaders on injection moulding machines. The sensor must reliably detect a wide range of different plastics. On the one hand this means different materials, residual moistures and temperatures, on the other hand the grain sizes and surfaces of the basic substances vary considerably. Sensors with IO-Link allow tolerance limits to be defined in the area around the set switch point.

The operating concept enables setting and adjustment of the output function by pressing just one pushbutton. The automatic detection of the load simplifies the connection to common controllers.