佐々木式表面温度計の誤差解析

概要

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The principle of Sasaki's method for surface-temperature measurement is that the temperature of the measuring junction of a thermocouple indicated by a meter in the couple circuit is the temperature of the surface of a body if the junction temperature has been so adjusted that the meter shows no deflection when the junction makes a brief light contact with the surface. Hence, this method does not sensibly affect the surface conditions, and one can eliminate the main errorproducing factor common to the contact methods of temperature measurement. However, an inevitable bias error occurs because of radiation shielding when a finite-size thermocouple junction is brought close to the wall surface. In the present study, we have analyzed the conjugate heat transfer in a body whose surface temperature is being measured, and have developed a simple equation to estimate the foregoing inherent bias error.
一般社団法人日本機械学会の論文
1991-08-25