The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 24, 1998
Filed:
Oct. 22, 1996
Takamitsu Takayama, Kawasaki, JP;
Yoshiro Yamada, Kawasaki, JP;
NKK Corporation, Tokyo, JP;
Abstract
A method and apparatus for measuring a true temperature using a consumable optical fiber, wherein received light emitted from a high temperature liquid is divided into two light beams through a branching filter. A light of a first wave band from a first light beam of the two light beams is detected by a first radiation thermometer, and the light of the first wave band is converted into temperature to output a first temperature. A light of a second wave band from a second light beam of the two light beams is detected by a second radiation thermometer, and the light of the second wave band is converted into temperature to output a second temperature. The true temperature is then calculated by using two first temperature-conversion-parameters inherent to the first radiation thermometer, a first transmission loss index in the first wave band by the first radiation thermometer, the outputted first temperature from the first radiation thermometer, two second temperature-conversion-parameters inherent to the second radiation thermometer, a second transmission loss index in the second wave band by the second radiation thermometer, the outputted second temperature from the second radiation thermometer.