Patent ID: 7234363

Claim:
A mass flow meter for measuring a flow of a flowing medium, the mass flow meter configured to operate according to the Coriolis principle and comprising: a Coriolis measuring tube; at least one oscillation generator acting on the Coriolis measuring tube; at least one first sensor for detecting Coriolis forces or oscillations caused by Coriolis forces and for generating a first measurement signal; an evaluation unit configured to determine and output a measured value representing the flow of the flowing medium based on at least the first measurement signal; and at least one second sensor configured to measure the flow according to a flow measuring method not based on the Coriolis principle and to detect a zero flow in the measuring tube not using the detected Coriolis forces or oscillations caused by the Coriolis forces, the second sensor generating a second measurement signal indicating a detected zero flow, wherein the evaluation is further configured to calculate the flow additionally using the second measurement signal, if the flow is comparable to the zero flow as indicated by the second measurement signal.