Pressure transducer based fluid velocity sensor
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United States of America Patent
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Aug 7, 2007
Grant Date -
N/A
app pub date -
Dec 15, 2005
filing date -
Dec 30, 2004
priority date (Note) -
Expired
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Abstract
The invention consists of a pressure transducer based air velocity sensor that has been optimized for use in metal ducts. The fluid flow velocity is determined by measuring the propagation delay of a direct path pressure wave signal transmitted through the fluid as a function of a frequency difference rather than as a phase delay measurement. This system electronically removes multi-path signals from the measured signal, thereby obviating the requirement for installation calibration.
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