Reduced Emissivity - A Factor for Precision in Pyrometric Measurements

被引：0
|
作者：
Khodunkov, V. P. [1 ]
机构：
[1] Mendeleev All Russia Res Inst Metrol VNIIM, St Petersburg, Russia
来源：
MEASUREMENT TECHNIQUES | 2020年 / 62卷 / 12期
关键词：
pyrometer; receiver; reduced emissivity; radiation heat exchange; measurement uncertainty;
D O I：
10.1007/s11018-020-01731-1
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The problem of the precision of pyrometric measurements, associated with the convergence of readings of various pyrometers was examined. Readings in practice of pyrometric measurements of the overestimation of the measured temperature and a divergence of readings of various pyrometers are theoretically justified. One reason for the divergence of readings is the usage of an approximation calculation of the relationship for reduced emissivity in the equation of pyrometric measurement. The conditions for application of the specified equation are formulated. Calculation data of the effect of reduced emissivity on observed data are given, and practical recommendations for enhancing the precision of pyrometric measurements are made.
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页码：1035 / 1041
页数：7
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