Measuring and testing – Specific gravity or density of liquid or solid
Reexamination Certificate
2006-11-13
2009-10-06
Fitzgerald, John (Department: 2856)
Measuring and testing
Specific gravity or density of liquid or solid
C073S861180, C073S061440
Reexamination Certificate
active
07596987
ABSTRACT:
A flow measuring system combines a density measuring device and a device for measuring the speed of sound (SOS) propagating through the fluid flow and/or for determining the gas volume fraction (GVF) of the flow. The GVF meter measures acoustic pressures propagating through the fluids to measure the speed of sound αmixpropagating through the fluid to calculate at least gas volume fraction of the fluid and/or SOS. In response to the measured density and gas volume fraction, a processing unit determines the density of non-gaseous component of an aerated fluid flow. For three phase fluid flows, the processing unit can determine the phase fraction of the non-gaseous components of the fluid flow. The gas volume fraction (GVF) meter may include a sensing device having a plurality of strain-based or pressure sensors spaced axially along the pipe for measuring the acoustic pressures propagating through the flow.
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Banach Thomas E.
Curry Patrick
Gysling Daniel L.
Loose Douglas H.
Expro Meters Inc.
Fitzgerald John
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