Patent ID: 7406878

Claim:
A method for measuring at least one flow parameter, especially a flow velocity, a mass flow or a volume flow, of, an at least at times, two or more phase medium flowing in a pipeline, with at least one of the phases of the medium being fluid, which method comprises the steps of: causing the medium to be measured to flow through at least one measuring tube joined into the course of the pipeline, especially a measuring tube which vibrates, at least at times; producing at least one measurement signal influenced by at least one physical parameter, especially a flow velocity, a mass flow, a volume flow, a density and/or a viscosity, of the medium in the measuring tube, using an inline measuring device sensor arrangement arranged on the measuring tube and/or in its vicinity and reacting, at least mediately, to changes of the at least one physical parameter of the medium; registering pressures, especially static pressures, effective in the medium, in order to repeatedly determine a pressure difference existing in the flow medium, especially a pressure difference existing, at least in part, along the at least one measuring tube; and producing measured values of a first kind, which represent, especially digitally, following one after the other in time, the at least one flow parameter to be measured for the medium, taking into consideration a currently determined pressure difference for the flowing medium, as well as applying a transfer function, wherein: the transfer function at least determines how the measured values of the first kind are generated taking into consideration the pressure difference currently determined for the flowing medium; and the transfer function is adapted repeatedly to the medium to be measured, taking into consideration the at least one measurement signal produced by means of the sensor arrangement of the inline measuring device.