CONDUCTIVITY MEASURING INSTRUMENT AND CORRECTING METHOD FOR MEASUREMENT VALUES THEREFROM

摘要

PROBLEM TO BE SOLVED: To perform correction on a measured conductivity obtained by a measuring unit for each temperature of an annular magnetic body by accurately calculating the temperature of the annular magnetic body, to measure a conductivity with high accuracy.SOLUTION: A conductivity measuring instrument 100 that comprises: a primary coil 31 that forms a primary side magnetic flux ring and is arranged such that a measurement object forming a closed loop penetrates the primary side magnetic flux ring; a secondary coil 32 that forms a secondary side magnetic flux ring and is arranged such that the measurement object penetrates the secondary side magnetic flux ring; a primary side magnetic body 21 around which the primary coil 31 is wound and a secondary side magnetic body 22 around which the secondary coil is wound; a power supplying unit 5 for applying predetermined alternating voltage to the primary coil 31; and a measuring unit 6 for measuring the conductivity of the measurement object on the basis of induced current generated in the secondary coil 32, further comprises a temperature sensor 45 for directly or indirectly measuring the temperature of at least any one of the primary side magnetic body 21 and the secondary side magnetic body 22.