A method and apparatus for measuring the water conductivity...

G - Physics – 01 – N

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G01N 33/28 (2006.01) G01N 22/00 (2006.01) G01N 33/18 (2006.01)

Patent

CA 2617186

A method for determining the water conductivity and water volume fraction of a multi-component mixture of water and at least one additional liquid or gas in a pipe, the method comprising the following steps: a. electromagnetic phase measurements at at least two measurement frequencies are performed between two receiving antennas located at different distances from a sending antenna, b. based on empirically determined constant(s) and the above measurements, the real and imaginary dielectric constants are determined, c. the temperature and pressure are determined d. based on the knowledge of the real and imaginary dielectric constants of the components of the fluid mixture and the result from the above steps a-c, the conductivity of the water and / or the volume fraction of water are determined. An apparatus for performing the method is also disclosed.

Procédé pour déterminer la conductivité de l~eau et la fraction de volume d~eau d~un mélange multi-composants d~eau et d~au moins un liquide additionnel ou gaz dans un tuyau, le procédé comprenant les étapes suivantes : a. des mesures de phases électromagnétiques à au moins deux fréquences de mesure sont effectuées entre deux antennes de réception situées à des distances différentes d~une antenne d~émission, b. en fonction d~une ou des constante(s) déterminées empiriquement et des mesures ci-dessus, les constantes diélectriques réelles et imaginaires sont déterminées, c. la température et la pression sont déterminées, d. en fonction de la connaissance des constantes diélectrique réelles et imaginaires des composants du mélange de fluides et des résultats des étapes a-c ci-dessus, la conductivité de l~eau et / ou la fraction de volume de l~eau sont déterminées. La présente invention concerne également un dispositif servant à effectuer ce procédé.

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