1973•鐵と鋼 : 日本鐡鋼協會々誌Open access

Comparative Study of Radiation Pyrometer and Blackbody

Toshio Shiraiwa, Yoichi TAMAMURA

Abstract

The characteristics of four types of radiation pyrometers in which Si cell, Phototube (Sl), thermopile, and PbS cell are used respectively, have been studied. Influences of emissivity variation, water film, steam, and scale on pyrometer readings are measured. A rotary furnace is used as a model that treats moving hot steel sheets.As the standard of radiation pyrometers, a blackbody furnace and its effective emissivity has been investigated.Results obtained are as follows.1) The effects of emissivity variation, water film, steam, and scale on are smaller for the radiation pyrometers using shorter wave lengths (

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Key concepts: Pyrometer, Emissivity, Black-body radiation, Radiation, Thermal radiation, Optics, Materials science, Thermopile