| 摘要 |
The present invention relates to a method for determining the phase composition of multiphase fluid flow in a fluid line. The method comprises a step of obtaining vibration signals from fluid flow using a vibration sensor (22) which vibrates while responding to the fluid flow in a fluid line, and which has a target arranged in the fluid line. The vibration signals are analyzed to determine a first energy parameter relative to the energy of vibration signals in a first frequency band and a second energy parameter relative to the energy of vibration signals in a second frequency band. Using the first and second parameters, phase composition parameters, such as a dryness parameter relative to the phase composition of the fluid flow, are determined. Also, the present invention relates to a device for determining the phase composition of multiphase fluid flow in a fluid line. [Reference numerals] (42) Analyzing unit; (44) Dryness determining unit; (46) Database; (48) Display part; (50) Transmitter |
