System for measuring change in fluid flow rate within a line
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United States of America Patent
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Feb 18, 2003
Grant Date -
Jul 11, 2002
app pub date -
Feb 4, 2002
filing date -
Jul 1, 1998
priority date (Note) -
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Abstract
A method and system for determining change in a fluid's flow rate within a line. The pressure variation in a second fluid, separated from the first by a pumping membrane, is measured in response to energy applied in a time-varying manner to the second fluid. From the response of the second fluid to the applied energy, changes in the flow rate of the first fluid are determined.
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