Nkk Corporation

Masao Hiroko

Shigeru Inoue

Yoshiro Yamada

Genji Kanatani

Ichiro Kikuchi

Akihiko Inoue

Hideo Nakamura

Masaki Komatani

Masao Doi

Takafumi Yoshikawa

Shirou Takene

Mitsuo Yamasaki

Takeshi Murai

Kazusi Miyamoto

Masashi Edahiro

Yuji Adachi

Hideaki Mizukami

Keiichi Miyoshi

Yoshimi Komatsu

Hirofumi Nakamura

An apparatus and method for measuring a temperature of a high temperature liquid contained in a furnace. An optical fiber covered with a metallic tube is inserted through a passageway inside a nozzle arranged on a furnace wall of the furnace. The nozzle communicates with an interior of the furnace containing the liquid, and gas is supplied into the passageway inside the nozzle to prevent the nozzle from clogging. The metal-covered optical fiber is fed through the passageway inside the nozzle into the liquid such that spectral light radiated from the liquid enters a tip of the metal-covered optical fiber and is propagated therealong. The temperature of the liquid is determined by a radiation thermometer, coupled to the metal-covered optical fiber, based on the spectral light propagated along the metal-covered optical fiber.

Apparatus and method for measuring a temperature of a high temperature

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Kawasaki, Japan

Masao Hiroko