ELECTROMAGNETIC FLOWMETER, FLOW RATE MEASUREMENT SYSTEM, AND FLOW RATE CALCULATION METHOD

摘要

PROBLEM TO BE SOLVED: To enable a correction value for removing effects on the result of measurement by a change of a zero point to be acquired without stopping the flow of a fluid to be measured.;SOLUTION: An electromagnetic flowmeter includes: a storage unit 34c for storing a correction value calculation coefficient based on the amount of a change in a detection signal when an excitation current is varied in advance; and a correction value calculation unit 34d for calculating a correction value for correcting the flow rate of a fluid to be measured from a first detection signal that is a detection signal obtained when a first excitation current used in calculating the flow rate is supplied to an excitation coil, a second detection signal that is a detection signal obtained when a second excitation current differing in value from the first excitation current is supplied to the excitation coil, and the correction value calculation coefficient.;COPYRIGHT: (C)2015,JPO&INPIT