TEMPERATURE MEASURING METHOD AND TEMPERATURE MEASURING INSTRUMENT FOR CONDUCTOR

PROBLEM TO BE SOLVED: To provide a temperature measuring method and a temperature measuring instrument for a conductor, which are capable of more accurate temperature measurement.SOLUTION: The temperature measuring method includes: a reference electromagnetic field signal transmission step of transmitting an AC reference electromagnetic field signal for reference temperature confirmation toward the conductor as a measurement object from an electromagnetic field signal transmission means; a reference electromagnetic field signal reception step of receiving the reference electromagnetic field signal which has passed through the conductor, by an electromagnetic field signal reception means; a thermometric electromagnetic field signal transmission step of transmitting an AC thermometric electromagnetic field signal toward the conductor from the electromagnetic field signal transmission means; a thermometric electromagnetic field signal reception step of receiving the thermometric electromagnetic field signal which has passes the conductor, by the electromagnetic field signal reception means; a time difference measurement step of measuring a time difference between a propagation time of the reference electromagnetic field signal and that of the thermometric electromagnetic field signal from the electromagnetic field signal transmission means to the electromagnetic field signal reception means; and a time difference-temperature conversion step of converting the time difference to a temperature value.