A new level measurement method based on the onedimensional (1-D) acoustics gas resonator is presented. The proposed method has been investigated in detail, and experimental gauges have been built and tested under artificially induced residues, foams and deposits. The level measurement method proves to be insensitive under extreme operating conditions, and it can be successfully implemented for fluid level measurements in a variety of industrial conditions. It is an alternative to ultrasonic as well to some other level measurement methods.
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