Fluid flow rate measuring device
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United States of America Patent
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-
May 8, 2018
Issued Date -
N/A
app pub date -
Apr 6, 2017
filing date -
Apr 7, 2016
priority date (Note) -
In Force
status (Latency Note)
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Abstract
An fluid flow rate measuring device preferably includes an airfoil, a differential pressure sensor and a programmable electronic controller. The airfoil includes a leading edge, a first pressure chamber, a second pressure chamber, and a trailing edge. At least one first hole is formed through the first pressure chamber. At least one second hole is formed through the second pressure chamber adjacent the trailing edge. The at least one first hole communicates with the first pressure chamber. The at least one second hole communicates with the second pressure chamber. The first and second pressure chambers are connected to first and second input ports of the differential pressure sensor. The differential pressure sensor outputs a voltage to the programmable electronic controller. The programmable electronic controller takes a square root of the differential pressure and multiplies it by a K factor to produce an fluid flow rate in CFM.
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