Method and apparatus for determining fluid properties from sonic

Details Method and apparatus for determining fluid properties from sonic Method and apparatus for determining fluid properties from sonic

1992-03-09

1993-12-21

Noland, Tom

Measuring and testing

Liquid analysis or analysis of the suspension of solids in a...

Viscosity

73 32A, G01N 1100, G01N 924

Patent

active

052712672

ABSTRACT:
A method and apparatus for non-intrusively identifying a property of a fluid in a container or pipe. The method includes propagating, from a transmitter, sonic energy into the fluid in the container; receiving the sonic energy at a reception site after a defined time delay determined by the nature of the fluid in the container; determining the time for the sonic energy to propagate from the transmitter to the reception site; determining the sonic propagation velocity of the sonic energy in the fluid from the determined time and from knowledge of the distance from the transmitter to reception site; determining the temperature of the fluid in the container; and determining the fluid property from the relationship between the sonic propagation velocity in the fluid and temperature. The properties determined may include viscosity and density, and if the fluid is known, pressure. Additionally, if the fluid is unknown, but known to be one of a number of fluids, the identity of the fluid can also be determined.

REFERENCES:
patent: 4235099 (1980-11-01), Ishizaka
patent: 4331025 (1982-05-01), Ord, Jr.
patent: 4522068 (1985-06-01), Smith
patent: 4559810 (1985-12-01), Hinrichs et al.
patent: 4934177 (1990-06-01), Cuthbertson et al.

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