METHOD FOR OPERATING A VIBRATORY MEASURING INSTRUMENT, AND CORRESPONDING INSTRUMENT

摘要

The invention relates to a method for operating a vibratory measuring instrument, according to which a fluid medium can flow through at least one measuring tube (1) that can be mechanically vibrated by means of a vibration generating unit (4). The vibratory behaviour varying according to the flow and/or the viscosity and/or the density of the fluid medium is detected by means of at least one vibration sensor (5a, 5b) for determining the mass flow rate and/or the viscosity and/or the density in a narrow-band frequency range, the signals then being evaluated by an electronic unit (6). The invention is characterised in that the vibratory behaviour of the measuring tube (1) is also evaluated by the electronic unit (6) in a wide-band frequency region, in order to determine physical operating parameters for increasing the measuring precision and/or to correct transversal sensitivities and/or to obtain additional information about the state of the measuring instrument.