Pressure differential flow meter including a constriction device that can create multiple areas of constriction
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United States of America Patent
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Mar 24, 2015
Grant Date -
Aug 22, 2013
app pub date -
Feb 13, 2013
filing date -
Feb 21, 2012
priority date (Note) -
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Abstract
A pressure differential flow meter for determining the flow rate of a fluid comprises a constriction device, wherein the constriction device is capable of creating at least a first area of constriction and a second area of constriction having cross-sectional areas that are different, wherein the constriction device automatically moves from the first area of constriction to the second area of constriction when the pressure differential increases above or falls below a predetermined range, and wherein the pressure differential is based on the fluid velocity of the fluid flowing in the flow meter. A method of determining the flow rate of a fluid using the pressure differential flow meter comprises flowing the fluid through the flow meter.
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