| 摘要 |
The invention relates to a method for operating a Coriolis mass flow measuring device (1), wherein said Coriolis mass flow measuring device (1) comprises at least one measuring pipe through which a medium flows, at least one vibration generator (2a, 2b), at least a first vibration sensor (3a), at least a second vibration sensor (3b) and at least a control and analyzing unit (4). Excitation signals (UDae, UDbe) can be guided from the control and analyzing unit (4) to the vibration generator (2a, 2b) via at least one excitation channel (Cha1, Cha2), wherein a first interested primary measurement signal (Va) can be guided from the first vibration generator (3a) to the control and analyzing unit (4) via at least a first measurement channel (Ch1) and a second interested primary measurement signal (Vb) can be guided from the second vibration generator (3b) to the control and analyzing unit (4) via at least a second measurement channel (Ch2). The detection of the relevant measurement variables or diagnosis parameters is achieved with increased accuracy and security in that the control and analyzing unit (4) calculates, at least indirectly and in a ratiometric manner, at least a derived secondary variable (m), based on the primary measurement signals (Vag, Vbg) transmitted via the measurement channels (Ch1, Ch2, Chn), wherein the interested primary measurement signals (Va, Vb') are guided alternately to the control and analyzing unit (4) via the different measurement channels (Ch1, Ch2, Chn) and wherein, based on the various values (Vag1, Vag2, Vagn; Vbg1, Vbg2, Vbgn) obtained from the different measurement channels (Ch1, Ch2, Chn) regarding the transmitted primary measurement signals (Vag, Vbg), compensation values (Vam, Vbm) of the transmitted primary measurement signals are calculated and said compensation values (Vam, Vbm) are used as a basis for the calculation of the derived secondary variable (m). |
