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Rotonovio Rotating Paddle Switch

Rotonovio Rotating Paddle Switch

Rotonivo paddle switches can be used as full, demand or empty detectors in bulk good silos. They are suitable for applications in a wide variety of materials. Rotonivo switches are available with international certificates for applications in hazardous locations (gas and dust).


  • Plastics
  • Cement and Aggregates
  • Food
  • Pulp and Paper
  • Chemical

Product: RN6

Principle of Operation

A measuring vane is driven by a synchronous motor. The bearing of the motor inside the housing allows it to swing. The motor is fixed to a switching lug.

If the vane is uncovered, a spring pulls the motor and switching lug to the left position (figure 1).

When material covers the vane and thus stops the rotation, the motor and switching lug swings to the right position (figure 2). The signal output indicates "covered" and the motor is stopped. When the vane becomes uncovered due to falling material, the spring pulls the motor and switching lug back to the left position. The motor is started and the signal output indicates "uncovered".



  • Suitable for virtually all bulk goods
  • Insensitive to dust, electrical charge, adhesion, temperature and pressure
  • Simple and reliable measuring principle, easy and fast installation
  • Channel or Flume
  • Basin
  • Shaft
  • Tank or Vessel

Housing: Aluminium IP 66 / NEMA Type 4

Pressure Range: -0.9 up to +10 bar (-13.1 up to +145 psi)

Process Connection: G 1", 1½" and 1¼";

NPT 1½" and 1¼";

M30x1,5 and M32x1,5;

various flanges available

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