Patent ID: 7032432
Filing Date: 2006-04-25
Classification: G01F,G01N

Abstract:
1. An apparatus for measuring at least one parameter of a mixture in a pipe, said apparatus comprising: a spatial array of at least two pressure sensors, disposed at different axial locations along the pipe, and each measuring an unsteady pressure within the pipe at a corresponding axial location, each of said sensors providing a pressure signal indicative of the unsteady pressure within the pipe at said axial location of a corresponding one of said sensors; and a signal processor, responsive to said pressure signals, that is adapted to determine the speed of sound propagating through the mixture having liquid droplets suspended in a gas as a function of frequency to characterize dispersion properties of the mixture and compare the dispersion properties of the mixture to a dispersion model of the mixture to provide a signal indicative of the at least one parameter of the mixture in the pipe.