Patent ID: 6453754
Filing Date: 2002-09-24
Classification: G01F

Abstract:
A magnetoinductive flowmeter for moving fluids, comprising a measuring tube, an electromagnet field coil positioned adjacent to said measuring tube and serving to generate a magnetic field that extends at least essentially perpendicular to the axis of the measuring tube, a power supply connected to the filed coil to feed a switched-direct-current field current to the field coil, at least two measuring electrodes positioned adjacent to the measuring tube along an imaginary line that extends at least essentially perpendicular to the axis of the measuring tube and to the direction of the magnetic field, a detection circuit connected to the measuring electrodes to analyze the measuring voltage of the measuring electrodes and to generate a flow signal, and an additional power source connected to the field coil which injects a supplementary current into the field coil immediately at the beginning of every half-wave of said field current.