Some consideration of the errors of brightness and two-colour types of spectral radiation pyrometer
Some consideration of the errors of brightness and two-colour types of spectral radiation pyrometer
复制标题
光谱辐射高温计亮度和双色型误差的一些考虑
DOI：
10.1088/0508-3443/5/7/308
复制
发表时间：
1954
期刊：
影响因子：
--
通讯作者：
E. Pyatt
中科院分区：
文献类型：
--
作者：
E. Pyatt
导出了这两种类型的误差的表达式，并由此得到一个图表，由此可以计算出任何高温计的所有可能的发射率值的误差。这两种类型的直接测量的真实温度的局限性进行了讨论，并可能导致的错误时，真实的温度计算表观温度从以前的知识发射率。本文导出了双色高温计波长（λ_1和λ_2）处的发射率（1和2）与双色高温计误差与亮度高温计在其中一个波长（λ_2）处的误差之比Z的关系式。这些信息被绘制成1对2的图表，并展示了其在实际问题中的应用。一个更复杂的类型的比率高温计提出，使更广泛的假设，以作出关于发射率/波长的关系。
Expressions are derived for the errors of the two types and from them a chart, from which these errors can be calculated for any pyrometer for all possible values of emissivity. The limitations of both types for direct measurement of true temperature are discussed and the errors likely to result when true temperatures are calculated from apparent temperature from previous knowledge of emissivities. An expression is derived for the relation between the emissivities (1 and 2) at the two-colour pyrometer wavelengths (λ1 and λ2) corresponding to a given ratio Z between the error of the two-colour pyrometer and the error of a brightness pyrometer working at one of the wavelengths (λ2). This information is plotted as a chart of 1 against 2, the application of which to a practical problem is demonstrated. A more complex type of ratio pyrometer is put forward, enabling broader assumptions to be made regarding the emissivity/wavelength relation.