Some considerations for a method that simultaneously measures the temperature and emissivity of a metal in a high temperature furnace

Autor:	Tohru Iuchi, Tohru Furukawa
Rok vydání:	2004
Předmět:	Materials science business.industry Astrophysics::High Energy Astrophysical Phenomena Temperature measurement law.invention Low emissivity Optics Thermocouple law Radiance Emissivity Thermal emittance Black-body radiation business Instrumentation Pyrometer
Zdroj:	Review of Scientific Instruments. 75:5326-5332
ISSN:	1089-7623 0034-6748
Popis:	This article describes some considerations for designing a practical radiation thermometry system for a glossy metal moving through a high temperature furnace, such as a continuous annealing furnace. In order to accomplish this task, two problems must be solved. The emissivity compensation of an object must be calculated and the furnace’s background radiation noise must be eliminated. The authors have proposed a method that uses the radiance’s polarized directional properties to simultaneously measure the emissivity and temperature to solve the first problem and a technique using a pseudo-blackbody installed in the furnace to solve the second problem. During heating, there is a one-to-one correspondence between the emissivity and the ratio of p- and s-polarized radiances for metals. This characteristic has successfully led to the development of a method for simultaneously measuring the emissivity and temperature of metals regardless of a potential large change in emissivity. Introducing a pseudo-blackbody...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::3b98ab681475ef1f13ac9dda8c84b57b https://doi.org/10.1063/1.1818994 Zobrazit plný text záznamu