MAGNETIC FLOWMETER ASSEMBLY WITH ZERO-FLOW MEASUREMENT CAPABILITY

摘要

A system and related method for operating a magnetic flowmeter. The method includes driving a first coil assembly with a first coil drive and a second coil assembly with a second coil driver to a zero (0) electrical potential. Then measuring a residual voltage in the conductive fluid using a pair of electrical electrodes. The residual voltage corresponding to a zero-flow measurement error. Correcting an induced voltage measurement detected by the pair of electrical electrodes when the first and second coil assemblies are driven to non-zero electrical potentials. The corrected voltage measurement determined by subtracting the zero-flow measurement error from the induced voltage measurement. Lastly, determining a corrected fluid velocity based on the corrected voltage measurement. The corrected fluid velocity measurement accounting for the zero-flow measurement error