Magnetic flowmeter with automatic adjustment based on sensed complex impedance

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United States of America Patent

PATENT NO 9696188
SERIAL NO

13826839

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Abstract

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A magnetic flowmeter comprises a pipe section for process flow, a coil for generating a magnetic field across the pipe section, a current source for energizing the coil to generate the magnetic field at a coil drive frequency, and electrodes for sensing voltage induced across the process flow by the magnetic field. A processor calculates a function of the sensed voltage and generates a flow output based on the function. The processor adjusts an operating parameter of the flowmeter, such as electrode voltage sampling period, the coil drive frequency, or a phase shift, as a function of a sensed electrode-to-electrode or electrode-to-ground complex impedance.

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Patent Owner(s)

Patent OwnerAddress
MICRO MOTION INC7070 WINCHESTER CIRCLE BOULDER CO 80301

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Foss, Scot Ronald Eden Prairie, US 10 67
Rogers, Steven Bruce Minnetonka, US 11 114
Rovner, Bruce D Minneapolis, US 9 85

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