CORIOLIS MASS FLOW METER AND METHOD FOR DETERMINING VARIABLES INFLUENCING THE TOTAL ZERO POINT ERROR OF THE METER, METHOD FOR DETERMINING THE TOTAL ZERO POINT ERROR AND OPERATING METHOD FOR SAME

摘要

A method for determining variables influencing a total zero point of a Coriolis mass flow meter comprises: exciting a vibration of a bending vibration mode; measuring a first total zero point error (T) at a flow rate of zero; determining a first damping value (D) of the vibration of the bending vibration mode; measuring a zero point error (I) which is independent of the exciter during a decaying vibration of the bending vibration mode at a flow rate of zero; determining a first exciter-dependent contribution (E) to the first total zero point error (T) using the first total zero point error (T) and using the zero point error (I) which is independent of the exciter; and determining a sensitivity factor (S) for the bending vibration mode using the first exciter-dependent contribution (E) to the total zero point error (T) and using the first damping value (D).