放射温度計の新温度標準体系(温度計測・推定技術)(<特集>鉄鋼製造のための新しい計測技術)

概要

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A traceability system for radiation pyrometers has been established. In this system a radiation pyrometer is calibrated beforehand at several fixed points, and it is used as the primary standard pyrometer. In the range of 800℃-1350℃ an automatic optical pyrometer is used as the primary standard and in the range between 500℃-800℃ the 0.9μm silicon-cell pyrometer is used. The emissivity of blackbody has been calculated by the integral equation method, and then the systematic errors have been evaluated as follows : The primary standard calibrated at the fixed points has an accuracy better than ±1K ; The secondary standard (Si-cell radiation pyrometers) has an accuracy better than ±2K, when calibrated by the primary standard. Radiation pyrometers can be calibrated by using the above secondary standard, and have an accuracy better than ±3K which is accurate enough for use in the steel industry.
1984-07-01