Abstract
Abstract Determining the component fractions in flowing fluids is of paramount technical interest in the process industry. One of the main challenging measurement tasks is the determination of the crude oil, water and gas fractions in the offshore oil production. Out of the possible measurement principles electromagnetic interaction is promising for cases where the fluid components have distinct dielectric properties. In this paper a new type of non-invasive multiphase meter is described which is based on a radio-frequency dielectric measurement principle using a slow-wave resonator. The data analysis is based on a theoretical treatment of the metering system. By deriving an exact relation between the dielectric properties of the flow components and the resulting resonance spectrum the individual volume fractions can be obtained from the measuring data. The theoretical model is verified by experimental results.
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