| 摘要 |
The present invention provides a method and apparatus for measuring, particularly remotely, a first composition-dependent physical property, such as bubble rise velocity or dynamic viscosity, of a fluid comprising a container for holding the fluid at a certain level in order to form a surface on the fluid; a bubble delivery tube for introducing into the fluid at a first depth a first bubble having a first size; a vacuum pump for generating a carrier gas stream; a hood for capturing in the carrier gas stream the first bubble as it leaves the surface of the fluid; and detector in the path of travel of the carrier gas stream to detect the first bubble in order to determine the time of transit of the bubble from first depth to the surface of the fluid, so as to enable calculation of the average bubble rise velocity. In addition, a second bubble delivery tube for introducing a second bubble at a second depth can be added to allow calculation of the average bubble rise velocity independent of the position of the surface of the fluid. Addition of a temperature sensor and apparatus capable of monitoring a second composition-dependent physical property allow the determination of the composition of the fluid by reference to a ternary phase diagram.
|
