Low frequency acoustic resonance level gauge

A new level measurement method is presented. It is based on the acoustic resonance of a one dimensional acoustic gas resonator. The proposed method has been investigated in detail and an experimental gauge has been built and tested under artificially induced residues, foams; deposits, etc. The level measurement method proves to be insensitive under extreme operating conditions and it can be successfully implemented for fluid level measurements in industrial plants, where problems of residues, deposits, foams etc. can be expected. The proposed method represents an alternative to ultrasonic as well to some other level measurement methods.