To provide a thermometer for measuring a surface temperature of a curved surface, having a shape adapted to measurement of a surface temperature, such as a tank, a heat exchanger, as well as, piping and duct whose surfaces are curved surfaces, a method of constructing the thermometer for measuring the surface temperature of the curved surface of an object to be measured with a fluid flowing therein, using the same in which the measurement condition is constant, and a method of precisely measuring the surface temperature of the object to be measured, having the curved surface with the fluid flowing therein by performing correction from relation between a measured value, obtained by the construction method and an internal temperature of a heat insulating member aperture.
The thermometer for measuring the surface temperature of the curved surface includes a ring-shaped magnet having a hole formed at the center, a metal protective tube whose one end is inserted into the hole of the magnet so as to be fixed, a thermocouple which is disposed in the metal protective tube and whose one end is positioned near a contact surface of the ring-shaped magnet with a piping surface, and a filler, filled into the metal protective tube to provide satisfactory thermal conduction to the thermocouple.
COPYRIGHT: (C)2009,JPO&INPIT
Naoki Aizawa
Katsuhiko Shibata
Keiichi Ishizuka
Hideyuki Okamoto
Hitoshi Yonezawa
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Shinichi Abe
Yuji Tsujida