The piezo drive is the heart of the sensor, activating the VEGASWING tuning fork to vibrate on its resonance frequency. The frequency of the fork reduces with the immersion. The frequency change is evaluated by the integrated electronics and converted into a switching signal.

The vibrating rod of VEGAVIB is activated to vibrate via the piezo drive. If the vibrating rod is immersed, the amplitude will be damped. The electronics detects this damping and converts it into a switching command.

A tuning fork is used as sensor for the VEGAWAVE series. Control as well as processing correspond to VEGAVIB series. The advantages of this series are ruggedness as well as insensitivity to build up. Therefore, it is the ideal sensor for powders and fine-grained products.