| 摘要 |
FIELD: measurement equipment. ^ SUBSTANCE: measurement electronic device (20) of flow metre includes interface (201) for receiving frequency characteristic of flow material and data processing system (203) which receives from interface (201) the frequency characteristic containing the signals of the first and the second sensors, and breaks it into frequency component of gas and frequency component of fluid. Data processing system (203) determines total density as to frequency characteristic, gas density as to frequency gas component, volume content of gas as to frequency characteristic and one or more from frequency gas component and frequency component of fluid, and mass fraction as to volume content of gas multiplied by ratio of gas density divided by total density. Besides data processing system (203) is intended for determining instantaneous frequency and instantaneous phase difference by means of which mass flow rate is determined. ^ EFFECT: invention improves measurement accuracy of mass fraction of components and mass of abruptly changing two-phase medium flows with air bubbles involved. ^ 36 cl, 20 dwg |
