THERMAL CONDUCTIVITY DETECTING METHOD, THERMAL CONDUCTIVITY DETECTING SENSOR, THERMAL CONDUCTIVITY DETECTING APPARATUS, AND MONITORING SYSTEM

摘要

Provided is a thermal conductivity detecting method by which thermal conductivity can be detected by suppressing cost increase of an apparatus as much as possible, even when a smaller quantity of subject is to be detected, and installation of the apparatus to even a smaller required area is made possible.  A thermal conductivity detecting sensor to be used for implementing such method, and a thermal conductivity detecting apparatus provided with the thermal conductivity detecting sensor are also provided.  In a thermal conductivity detecting sensor (2), a sensor main body (26) formed of a discretionary metal is installed in a recessed section (24) arranged on a surface of a substrate (20).  After a required current is made to flow to the sensor main body (26) from a current control section (5) of a thermal conductivity detecting apparatus (1) and a predetermined time required from a time when the subject which is to be detected and applied to the recessed section (24) is heated by the sensor main body (26) and to a time when the temperature of the sensor main body (26) reaches the steady state is passed, the temperature of the sensor main body (26) in the steady state is measured based on the voltage of the sensor main body (26) measured by a voltage measuring section (6), and the thermal conductivity of the subject to be detected is calculated by using the measured temperature.