Means and techniques useful in mass flowmeters for multiphase flows

Abstract

A mixture of two materials flows through a first measuring station which includes a Venturi meter for obtaining and measuring a pressure difference .DELTA.p that is representative of mass flow rate of the mixture and velocity. The mixture then flows through a second measuring station which includes a temperature differential flowmeter in which a predetermined amount of heat is supplied to heat the flowing mixture and raise its temperature to obtain and measure a corresponding change in temperature that is related to the mean density of the mixture and also the square of the mass flow rate. These values .DELTA.p and .DELTA.t are inputs to computer means which functions to solve a third order polynominal or cubic equation and express that solution in terms of the mixture ratio and flow rates of the individual components and the flow rate of the mixture itself.

Dependencies are inferred from the claim text.