Abstract: A tubal measuring arrangement and a method for measuring the flow rate of fluid comprising ions, the measuring arrangement comprising at least one permanent magnet adapted to maintain a magnetic field substantially perpendicular to the flow of the fluid, at least one first detecting arrangement being positioned substantially perpendicular to the magnetic field and configured to conduct at least one first measurement, at least one first measuring circuit, at least one second detecting arrangement being positioned substantially along the direction of flow of the fluid, at least one second measuring circuit that is configured to conduct at least one second measurement at the second measuring arrangement, at least one evaluation unit and at least one control unit.

Abstract: The invention relates to a measuring device for measuring a flow rate of an electrically conducting medium in a volume which is permeated by a magnetic field, comprising a device for producing the magnetic field, at least one resistor, at least two electrodes, the at least two electrodes being electrically interconnected via the at least one resistor, and an evaluation unit for evaluating the measurement signal of the electrodes measured in parallel to the at least one resistor, and for calculating the flow rate.