Method and system for measuring a flow
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United States of America Patent
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Mar 12, 2013
Grant Date -
Nov 24, 2011
app pub date -
May 16, 2011
filing date -
May 18, 2010
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method is described for measuring a flow of gas passing a flow meter device. The device causes a pressure drop when a gas flows through it. The pressure drop across the device is a measure of the gas flow. The device is configured as a gas permeable tube that has a flow channel on the upstream side along the tube configured so as to decrease the cross-section of the channel downstream of the gas permeable tube. This provides for a minimum volume in the channel upstream of the device's pressure-drop-generating component.
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