Measuring and testing – Volume or rate of flow – Of selected fluid mixture component
Patent
1989-04-14
1989-10-10
Tokar, Michael J.
Measuring and testing
Volume or rate of flow
Of selected fluid mixture component
G01F 174
Patent
active
048723517
ABSTRACT:
Apparatus and accompanying methods for implementing both an accurate densimeter and a net oil computer utilizing a common Coriolis meter assembly is described. In essence, this apparatus measures density of an unknown fluid by first determining the period at which both flow tubes contained within a dual tube Coriolis meter oscillate while the unknown fluid passes therethrough. This apparatus then squares the result. Thereafter, the density of the unknown fluid is determined as a linear function that relates the squared tube period measurement for the unknown fluid, and squared tube period measurements and known density values for two known fluids, such as air and water, that have previously and successively passed through the meter during calibration. When used as a net oil computer, the inventive system obtains mass flow and temperature measurements from the same flow tubes. By using measured density and mass flow values of an oil-water emulsion that flows through the same Coriolis meter, the inventive system can advantageously provide both volumetric and mass based measurements of the flow rate and totalized flow of the entire emulsion and of the individual water and oil components present therein.
REFERENCES:
patent: 4689989 (1987-09-01), Aslesen et al.
Bell Robert P.
Michaelson Peter L.
Micro Motion Incorporated
Tokar Michael J.
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