Thermal flow meter
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United States of America Patent
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Oct 18, 2011
Grant Date -
May 13, 2010
app pub date -
Oct 7, 2009
filing date -
Oct 11, 2007
priority date (Note) -
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status (Latency Note)
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Abstract
A thermal flow meter for use in dialysis is described, that uses a thermal wave to generate a signal in the fluid for which the flow rate is to be measured. The phase angle of the thermal wave signal changes when traversing downstream. The phase difference between the signals received downstream, compared with a reference excitation source signal is measured, and used to determine the flow rate of the fluid.
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