Patent ID: 7874218
Filing Date: 2011-01-25
Classification: G01F

Abstract:
1. A capacitive electromagnetic flowmeter comprising: a measuring pipe; an insulating resin lining provided on an inner peripheral surface of a magnetic pipe; an excitation coil for producing a magnetic field in a direction that is perpendicular to the direction of a fluid that is flowing within the measuring pipe; a through hole penetrating a side wall of a nonmagnetic pipe in a direction that is perpendicular to the magnetic field produced by the excitation coil; a signal electrode that is coupled by electrostatic capacitance with the fluid that flows within the measuring pipe, disposed with-in the through hole; a guard electrode for shielding the signal electrode, disposed within the through hole; and an insulating vibration absorbing material, filled into the through hole, so as to cover the entire periphery of the signal electrode and the guard electrode.