Electromagnetic flowmeter

Details Electromagnetic flowmeter Electromagnetic flowmeter

G - Physics

01

F

G01F 1/58 (2006.01) G01F 1/60 (2006.01) G01F 15/00 (2006.01)

Patent

CA 2390062

In an AC flowmeter, a method of obtaining phase sensitive measurement is disclosed, which can dramatically reduce the effect of unwanted signals. According to the invention the output of the electromagnetic flowmeter (which flowmeter is arranged to be excited at an excitation frequency selected from a range of possible excitation frequencies) is corrected. The method comprises storing information concerning the estimated phase of an unwanted component of the output signal for a plurality of excitation frequencies; and correcting the output signal to reduce the unwanted component based on the stored information concerning the phase of the unwanted component at the excitation frequency in use.

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