Method for evaluating the measuring signals from a mass flow meter

摘要

A description is given of a method for evaluating the measuring signals from a mass flow meter for flowing media which operates according to the Coriolis principle and has at least one Coriolis line - straight or curved - carrying the flowing medium, at least one vibration generator acting on the Coriolis line at an excitation frequency and at least one measured value pick-up detecting Coriolis vibrations based on Coriolis forces, in which method, as a result of the fact that the resonance range of the Coriolis vibrations contains the excitation frequency, a superelevation of the Coriolis vibrations is achieved. According to the invention, changes in the superelevation of the Coriolis vibrations do not lead to an error in the mass flow measurement, specifically as a result of the fact that the excitation frequency and an inherent frequency of the Coriolis line are determined, that the superelevation of the Coriolis vibrations is determined from the excitation frequency and the determined inherent frequency of the Coriolis line, and that a change in the superelevation of the Coriolis vibrations on the basis of a change in the excitation frequency and/or the resonance range of the Coriolis vibrations is compensated for by computation.