| 摘要 |
The invention relates to a measuring system comprising a vibration element for guiding flowing medium, which vibration element (V1) has a lumen, and comprising a vibration element (V2) which is configured in order to be contacted by a portion of the medium, at least periodically. Furthermore, the measuring system comprises at least two vibration exciters (E1, E2) for activating resonance vibrations of in each case one of the vibration elements (V1, V2), two vibration sensors (S1, S2) that are located at a distance from each other for capturing vibrations of the vibration element (V1), which vibration sensors generate in each case a vibration signal (s1 or s2) dependent on vibrations of the vibration element (V1) and at least one vibration sensor (S3) for capturing vibrations of the vibration element (V2), which vibration sensor generates a vibration signal (s3) dependent on vibrations of the vibration element (V2), which vibration signal comprises a signal frequency that corresponds to a resonance frequency, fr2, of the vibration element (V2). Moreover, the measuring system also comprises measuring and operating electronics (ME) which on the basis of a phase difference &Dgr;&phgr;12 existing between the vibrationsignals (s1, s2) and on the basis of the signal frequency of the vibration signal (s3) generates a measuring value representing the volume flow rate and/or the volume flow (Xv and/or Xv). |
