Flow measuring device and flow measuring method
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United States of America Patent
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May 15, 2001
Grant Date -
N/A
app pub date -
Mar 24, 1999
filing date -
May 24, 1996
priority date (Note) -
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Abstract
A first heating resistor is placed in a fluid flow path. A second heating resistor is placed downstream of the first heating resistor. A power supply unit supplies power to each of the first and second heating resistors. A measuring unit measures directly or indirectly a heating factor value of each of the first and second heating resistors. A subtracting unit subtracts the heating factor value of the first heating resistor from the heating factor value of the second heating resistor. A calculating unit performs one of multiplication and division on the subtracting result and the heating factor value of one of the first and second heating resistors.
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