TEMPERATURE MEASURING METHOD

PROBLEM TO BE SOLVED: To provide a temperature sensor capable of measuring temperature over a wide temperature range with high accuracy.SOLUTION: A temperature measuring method using a temperature sensor includes: a setting step of setting temperature measuring conditions to first conditions; an ordering step of ordering first temperature measurement under the measuring conditions; a determining step of determining whether the first temperature measurement is to be completed or second temperature measurement is to be executed; and a resetting step of resetting measuring conditions for the second temperature measurement. Since, when a temperature measured is outside the measuring range of the first temperature measurement, the second temperature measurement is executed in a different measuring range and temperature measurement is accurately executed in the measuring ranges, accurate temperature measurement can be executed over a wide temperature range.