Hybrid sensor system for gas flow measurements
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United States of America Patent
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Dec 29, 2015
Grant Date -
May 1, 2014
app pub date -
Oct 30, 2012
filing date -
Oct 30, 2012
priority date (Note) -
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Abstract
Disclosed are apparatus and methodology for measuring gas flow. A gas flow meter can include a plurality of sensors to detect a gas flow at various flow rates in the meter. A first sensor can detect a gas flow at a low flow rate and a second sensor can detect a gas flow when the flow rate is sufficient to produce an oscillating jet. The first sensor can be disposed parallel to the gas flow and detect the flow rate and the temperature of the gas flow. When the flow rate of the gas is below a predetermined threshold, power is supplied to the first sensor to detect gas flow. When the gas flow rate is high enough such that the gas flow produces an oscillating jet of fluid, power is supplied to the second sensor. The second sensor can detect the frequency of the oscillating jet flow.
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