Measuring and testing – Volume or rate of flow – By measuring transit time of tracer or tag
Reexamination Certificate
2007-09-27
2008-08-12
Thompson, Jewel V (Department: 2855)
Measuring and testing
Volume or rate of flow
By measuring transit time of tracer or tag
Reexamination Certificate
active
07409875
ABSTRACT:
A flowing electrically-conductive fluid is controlled between an upstream and downstream location thereof to insure that a convection timescale of the flowing fluid is less than a thermal diffusion timescale of the flowing fluid. First and second nodes of a current-carrying circuit are coupled to the fluid at the upstream location. A current pulse is applied to the current-carrying circuit so that the current pulse travels through the flowing fluid to thereby generate a thermal feature therein at the upstream location. The thermal feature is convected to the downstream location where it is monitored to detect a peak associated with the thermal feature so-convected. The velocity of the fluid flow is determined using a time-of-flight analysis.
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Korman Valentin
Markusic Thomas E.
Polzin Kurt A.
Stanojev Boris Johann
Bergen Peter J. Van
McGroary James J.
The United States of America as represented by the Administrator
Thompson Jewel V
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