Patent ID: 7624652

Claim:
A method for determining the flow rates of a fluid comprising a multi-component mixture of a gas and at least one liquid in a pipe, the method comprising the following steps: a. the multi-component mixture flow is conditioned to create a symmetrical annular gas concentration flow condition, b. the density distribution and/or dielectric constant distribution in said symmetrical flow within a cross-section of the pipe is determined, c. a function describing the radial distribution of density and/or radial distribution of dielectric constant is determined, d. the velocity of the multi-component mixture is determined, e. the temperature and pressure are obtained, and, f. based on the knowledge of densities and/or dielectric constants of the components of the fluid mixture, and the result from the above steps a-e, the volume and/or mass flow rates of the gas and liquid components of the fluid mixture are calculated.