| 摘要 |
FIELD: physics. ^ SUBSTANCE: electronic measuring device (20) has an interface (201) for receiving the first sensor signal and the second sensor signal from a flow metre and a data processing system (203), linked to interface (201). Data processing system (203) can receive the first and second sensor signals from interface (201), shift the phase of the first and second sensor signals by 90 degrees, calculate the frequency characteristic using the 90 degree phase shift of the first or second sensor signal, determine instantaneous density of the gas stream using the frequency characteristic, compare the instantaneous density of the stream with at least one preset density of gas or preset density of liquid and detect liquid phase based on the said comparison, and based on the instantaneous density of the stream. In the embodiment, instantaneous density is further compared with excitation transfer coefficient. ^ EFFECT: increased accuracy of measuring liquid fraction in a gas stream. ^ 28 cl, 17 dwg |
