Measuring and testing – Liquid level or depth gauge
Patent
1976-07-29
1978-10-10
Gill, James J.
Measuring and testing
Liquid level or depth gauge
340621, G01F 2328
Patent
active
041189833
ABSTRACT:
A method of controlling gas-liquid or liquid-liquid interface in monolayer reservoirs, wherein mechanical vibrations are excited within a section of the reservoir wall by means of a wave of acoustic vibrations, the velocity of propagation of mechanical vibrations being approximately equal to that of the wave wake of acoustic vibrations along this wall, the interface being ascertained from the amplitude of the acoustic wave transformed from said mechanical vibrations which propagate along said reservoir wall. A device for performing said method consists of two sound conductors with effective areas, an emitter of the wave of acoustic vibrations and a receiver of an acoustic wave being established on said effective areas respectively. Effective areas of the sound conductors are located at an angle to the contact areas of said conductors that are in contact with the reservoir wall, said angle being determined from the conditions of excitation of mechanical vibrations in the reservoir wall, this feature completely excluding control errors caused by the diffraction divergence of the acoustic wave in the media and by its considerable scattering particularly in liquid media.
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