Abstract: The invention relates to a method and system for estimating layers on electrodes in an annular, circular symmetric, multiphase pipe flow the pipe including a set of electrodes being evenly distributed along the inner pipe circumference. The method comprises the steps of measuring the impedance between each electrode and the other electrodes and obtaining a set of impedance values, the impedance values being categorized depending on the distance between the measuring electrodes, the impedance categories thus representing layers ranging from close to the pipe wall to the pipe center. The method also includes a precomputed model of a range of expected impedance values in the annular, circular symmetric fluid flow based on known fluid properties.

Abstract: The invention relates to a method and system for estimating layers on electrodes in an annular, circular symmetric, multiphase pipe flow the pipe including a set of electrodes being evenly distributed along the inner pipe circumference. The method comprises the steps of measuring the impedance between each electrode and the other electrodes and obtaining a set of impedance values, the impedance values being categorized depending on the distance between the measuring electrodes, the impedance categories thus representing layers ranging from close to the pipe wall to the pipe center. The method also includes a precomputed model of a range of expected impedance values in the annular, circular symmetric fluid flow based on known fluid properties.