CONDUCTIVITY METER, AND METHOD FOR CORRECTING MEASUREMENT, SETTING INITIAL STATE AND CALIBRATION OF CONDUCTIVITY METER

摘要

The purpose of a conductivity meter (100) is to measure conductivity with high accuracy by measuring the temperature of an annular magnetic material accurately and correcting the measured conductivity obtained by a measurement unit for each temperature of the annular magnetic material. The conductivity meter (100) comprises a primary coil (31), a secondary coil (32), a primary side magnetic material (21) around which the primary coil (31) is wound, a secondary side magnetic material (22) around which the secondary coil is wound, a power source (5) applying alternating voltage to the primary coil, and a measurement unit (6) measuring conductivity from an induced current generated in the secondary coil (32). A temperature sensor (45) directly or indirectly measures the temperature of the primary side magnetic material or the secondary side magnetic material (22).