Patent ID: 7966895

Claim:
An in line measuring device, especially a Coriolis mass flow/density measuring device and/or a Coriolis mass flow/viscosity measuring device, for a flowable medium, especially a medium which is, at least at times, two- or multiphase and/or which contains impurities, such as, for instance, gas bubbles and/or solid particles, comprising: a measuring transducer of the vibration-type, having at least one measuring tube vibrating, at least at times, during operation, especially performing bending oscillations, and serving for conveying flowable medium, especially medium which is, at least at times, two- or multiphase and/or which contains impurities, an exciter mechanism acting on said at least one measuring tube, especially an exciter mechanism acting centrally on said measuring tube, for producing vibrations, especially bending oscillations, of said at least one measuring tube, and a sensor arrangement for registering vibrations, especially bending oscillations, of said at least one measuring tube, which delivers at least one oscillation measurement signal representing oscillations, especially bending oscillations, of said at least one measuring tube; and measuring device electronics electrically coupled with said at least one measuring transducer, wherein: at least at times, said measuring device electronics delivers at least one exciter signal, especially an exciter signal having a periodically variable and/or impressed electrical current, driving said exciter mechanism; and at least at times, during operation, said measuring device electronics ascertains a damping value of first type, especially by means of the at least one oscillation measurement signal and/or by means of the at least one exciter signal, especially periodically and/or, with a predetermined updating rate, recurringly, ascertains a damping value of first type, which represents a change within a predeterminable time interval, of damping opposing the vibrations of said at least one measuring tube, especially corresponding to a change of a spatial distribution of inhomogeneities, such as, for instance, gas bubbles and/or solid particles, in the medium flowing through said at least one measuring tube and/or a change of the concentration of inhomogeneities, such as, for instance, gas bubbles and/or solid particles, in the medium flowing through said at least one measuring tube.