APPARATUS AND METHOD FOR FLUID FLOW MEASUREMENT
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United States of America Patent
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Mar 25, 2008
Grant Date -
Apr 3, 2008
app pub date -
Sep 28, 2006
filing date -
Sep 28, 2006
priority date (Note) -
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status (Latency Note)
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Abstract
An apparatus and method for flud flow measurement are provided. The apparatus includes a first thermistor; a second thermistor; a first deflecting member configured to shield the first thermistor from fluid flowing in a first direction; a second deflecting member configured to shield the second thermistor from fluid flowing in a second direction where the second direction is substantially opposite the first direction; and a circuit in electrical communicati with the first thermistor and the second thermistor. The circuit includes a comparator for comparing a first signal from the first thermistor to a second signal from the second thermistor. The comparator provides an output indicative of a direction of fluid flowing past the first thermistor and the second thermistor.
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