Patent ID: 6435036
Filing Date: 2002-08-20
Classification: G01F

Abstract:
A vortex flow meter comprising:a measuring tube in which a fluid is carried; a vortex generator provided in the measuring tube for developing a Karman vortex in the fluid; a magnetic field generator for generating a magnetic field applied downstream of the vortex generator across the measuring tube; a pair of electromotive force measuring electrodes provided downstream of the vortex generator for measuring an electromotive force generated when the Karman vortex passes across the magnetic field; a first reference electrode provided upstream of said vortex generator and a second reference electrode provided downstream of the electromotive force measuring electrodes, for measuring a potential at each location; and a detector circuit electrically connected to the electromotive force measuring electrodes and the first and second reference electrodes for calculating a flow of the fluid from the electromotive force and the potential measured by the first and second reference electrodes.