The tuning fork vibration is created by a piezoelectric drive (crystal) that brings the tuning fork to a vibration frequency. When the tuning fork is immersed in a liquid or solid, the frequency changes due to the density of the surrounding medium. The electronics system in the level switch monitors the resonant frequency and indicates whether the fork is vibrating in air or being covered by liquid. A signal is output via the PNP, NPN or relay output.


  • Universal power supply
  • Solid state or relay output
  • Compact and maintenance free
  • No calibration required
  • Explosion proof available
  • Available in mini format, standard and longer sensors

Categorie filter:   Alles Hydrostatic Pressure Transmitters Float Switches Vibrating Tuning Fork Sensors By-Pass Indicators Optical Level Switches Ultrasonic-Radar Magnetostrictive level transmitters Capacitance Level Switches

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