Patent ID: 9335196
Filing Date: 2016-05-10
CPC Classification: G01F

Claim Text:
1. Method for operating a Coriolis mass flow measuring device having at least one measuring tube through which a medium flows, at least one oscillation generator, at least one first oscillation sensor, at least one second oscillation sensor, and at least one control and analysis unit, whereby excitation signals can be transmitted via at least one excitation channel to the oscillation generator of the control and analysis unit, comprising the steps of: transmitting a first primary measuring signal of interest via at least one first measuring channel to the control and analysis unit from the first oscillation sensor, transmitting a second primary measuring signal of interest via at least one second measuring channel to the control and analysis unit from the second oscillation sensor, using the control and analysis unit to ratiometrically calculate at least one derived secondary variable at least indirectly from the primary measuring signals transmitted via the at least one first and at least one second measuring channels, alternately transmitting the primary measuring signals of interest via at least one first and at least one second measuring channels to the control and analysis unit, calculating comparison values of the transmitted primary measuring signals from different values for the primary measuring signals transmitted via the different measuring channels, and using the calculated comparison values as a basis for calculating the derived secondary variable.