Method for testing a mass flow rate meter
A method of testing a mass flow rate meter functioning on the Coriolis principle, in which an apparatus of the mass flow rate meter is subjected to a predetermined oscillation excitation and the associated oscillation response is recorded. Then the recorded oscillation response is compared with a previously recorded oscillation response. Testing of the Coriolis mass flow rate meter with regard, for example, to error tolerances in the manufacturing or with regard to a calibration condition is thereby enabled.
1. Method of testing a mass flow rate meter functioning on the Coriolis principle, comprising the steps of:
subjecting an apparatus of the mass flow rate meter to a predetermined oscillation excitation and recording the associated oscillation response, and
comparing the recorded oscillation response with at least one previously recorded oscillation response;
wherein at least one damping factor is recorded as the oscillation response, and
wherein the damping factor is recorded in a frequency-selective manner.
2. Method according to claim 1 , wherein a plurality of damping factors are recorded in frequency-selective manner for a plurality of natural frequencies.
3. Method according to claim 1 , wherein deviations of the recorded oscillation response from the previously recorded oscillation response are determined during said comparing step.
4. Method according to claim 3 , wherein, based on the deviations determined, an assessment of the mass flow rate meter is carried out automatically.
5. Method of testing a mass flow rate meter functioning on the Coriolis principle, comprising the steps of:
subjecting an apparatus of the mass flow rate meter to a predetermined oscillation excitation and recording the associated oscillation response, and
comparing the recorded oscillation response with at least one previously recorded oscillation response;
wherein a frequency spectrum generated is recorded as the oscillation response.
6. Method according to claim 5 , wherein at least one damping factor is recorded as the oscillation response.
7. Method of testing a mass flow rate meter functioning on the Coriolis principle, comprising the steps of:
subjecting an apparatus of the mass flow rate meter to a predetermined oscillation excitation and recording the associated oscillation response, and
comparing the recorded oscillation response with at least one previously recorded oscillation response;
wherein a transient excitation is provided as the predetermined oscillation excitation, and
wherein said transient excitation is provided by a stroke or a blow.
8. Method of testing a mass flow rate meter functioning on the Coriolis principle, comprising the steps of:
subjecting an apparatus of the mass flow rate meter to a predetermined oscillation excitation and recording the associated oscillation response, and
comparing the recorded oscillation response with at least one previously recorded oscillation response;
wherein a continuous excitation with a predetermined frequency spectrum is provided as the predetermined oscillation excitation.
9. Method according to claim 8 , wherein the predetermined frequency spectrum has exactly one frequency.