Vibration type

A vibrating rod or fork-shaped sensor is excited to its resonant frequency.

Capacitance

A capacitance probe can be compared to an electrical capacitor.

Rotary pallet

Rotating vane rotation is maintained when uncovered and stops when covered with solid products.

Microwave barrier

The detection of any type of granulated solids is based on microwaves (Doppler effect) by means of a transmitter-receiver.

Radiometric

A gamma ray source, consisting of a Cesium or Cobalt isotope, emits radiation that is attenuated as it passes through materials.