Inline measuring device, particularly a Coriolis mass flowmeter/density meter and/or a Coriolis mass flowmeter/viscosity meter, designed to measure a mass flow rate, m, of a flowing medium, particularly a medium that is at least intermittently two-phase or multi-phase, and/or contains foreign matter, such as gas bubbles and/or solid particles, said inline measuring device comprising: - a vibronic-type sensor -- with at least one measuring tube that vibrates at least temporarily during operation, and particularly produces flexural vibrations, said tube being designed to conduct flowing medium, particularly a medium that is at least intermittently two-phase or multi-phase, and/or contains foreign matter -- with an exciter arrangement acting, particularly in a central manner, on the measuring tube, said arrangement being designed to generate vibrations, particularly flexural vibrations, of the at least one measuring tube, and -- with a sensor arrangement (117, 118) to capture vibrations, particularly flexural vibrations, of the at least one measuring tube, that delivers at least one vibration measuring signal (s 1, s 2) that represents vibrations, particularly flexural vibrations, of the measuring tube, as well as - measuring device electronics electrically coupled with the sensor, -- that deliver at least temporarily at least one excitation signal (i exc) that drives the exciter arrangement, particularly with a current that is periodically modifiable and/or applied, characterized in that -- the measuring device electronics recurrently determine, at least temporarily, a damping value (X DI) of the first type - particularly using the at least one vibration measuring signal (s 1, s 2) and/or using the at least one excitation signal (i exc), said value being determined during operation, particularly periodically and/or at a predefined update rate f A = 1/T A and wherein said value currently represents an antisymmetric damping of vibrations of the at least one measuring tube, said damping being induced by medium flowing through the at least one measuring tube, corresponding to a spatial distribution of inhomogeneities, particularly gas bubbles and/or solid particles in the medium flowing through the at least one measuring tube, and being antisymmetric in relation to an imaginary median plane of the at least one measuring tube that is coplanar with a cross-section of the measuring tube, and -- the measuring device electronics recurrently generate at least temporarily at least one mass flow measured value (X m) using the damping value (X DI) of the first type and using the at least one vibration measuring signal (s 1, s 2) and/or using the excitation signal (i exc), particularly periodically and/or at a predefined update rate f A = 1 / T A, wherein said mass flow measured value (X m) currently represents a mass flow rate, m, of the medium conducted through the at least one measuring tube. - a vibronic-type sensor -- with at least one measuring tube that vibrates at least temporarily during operation, and particularly produces flexural vibrations, said tube being designed to conduct flowing medium, particularly a medium that is at least intermittently two-phase or multi-phase, and/or contains foreign matter -- with an exciter arrangement acting, particularly in a central manner, on the measuring tube, said arrangement being designed to generate vibrations, particularly flexural vibrations, of the at least one measuring tube, and -- with a sensor arrangement (117, 118) to capture vibrations, particularly flexural vibrations, of the at least one measuring tube, that delivers at least one vibration measuring signal (s 1, s 2) that represents vibrations, particularly flexural vibrations, of the measuring tube, as well as - measuring device electronics electrically coupled with the sensor, -- that deliver at least temporarily at least one excitation signal (i exc) that drives the exciter arrangement, particularly with a current that is periodically modifiable and/or applied, -- the measuring device electronics recurrently determine, at least temporarily, a damping value (X DI) of the first type - particularly using the at least one vibration measuring signal (s 1, s 2) and/or using the at least one excitation signal (i exc), said value being determined during operation, particularly periodically and/or at a predefined update rate f A = 1/T A and wherein said value currently represents an antisymmetric damping of vibrations of the at least one measuring tube, said damping being induced by medium flowing through the at least one measuring tube, corresponding to a spatial distribution of inhomogeneities, particularly gas bubbles and/or solid particles in the medium flowing through the at least one measuring tube, and being antisymmetric in relation to an imaginary median plane of the at least one measuring tube that is coplanar with a cross-section of the measuring tube, and -- the measuring device electronics recurrently generate at least temporarily at least one mass flow measured value (X m) using the damping value (X DI) of the first type and using the at least one vibration measuring signal (s 1, s 2) and/or using the excitation signal (i exc), particularly periodically and/or at a predefined update rate f A = 1 / T A, wherein said mass flow measured value (X m) currently represents a mass flow rate, m, of the medium conducted through the at least one measuring tube.