On line, real-time densimeter—Theory and optimization | Zendy

Jin O. Kim | Zendy; Haim H. Bau | Zendy

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On line, real-time densimeter—Theory and optimization

Author(s) -

Jin O. Kim,

Haim H. Bau

Publication year - 1989

Publication title -

the journal of the acoustical society of america

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.619

H-Index - 187

eISSN - 1520-8524

pISSN - 0001-4966

DOI - 10.1121/1.397694

Subject(s) - waveguide , cross section (physics) , mechanics , sensitivity (control systems) , line (geometry) , materials science , stress (linguistics) , optics , acoustics , physics , computational physics , geometry , mathematics , electronic engineering , linguistics , philosophy , quantum mechanics , engineering

The speed of a torsional stress wave transmitted in a solid waveguide, which has a noncircular cross section and is submerged in a liquid, is inversely proportional to the density of the liquid. Thus, by measuring the speed of the torsional stress wave, information can be obtained about the density of the liquid or density‐related characteristics such as liquid level and the mass composition of biphase mixtures. A predictive theory is developed to correlate the speed of the wave with the density of the liquid and the shape of the waveguide’s cross section. The theory is used to optimize the waveguide’s geometry so as to increase sensor sensitivity. The theoretical results are compared and found to favorably agree with experimental observations.

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