比色温度计的波长选择  

Wavelength selection of colorimetric thermometer

作　　者：白日午[1] 宋立[2] 王浦[1] 

机构地区：[1]河北科技大学电气信息学院,河北石家庄050054 [2]河北经贸大学

出　　处：《冶金自动化》2003年第3期45-47,共3页Metallurgical Industry Automation

摘　　要：为抵消辐射率变化的影响,比色温度计的两波长应相距较近并处于辐射率恒定或变化平缓的波段。选择较短波长可提高辐射亮度的饱和温度,以扩大比色测温范围。测量通路介质吸收辐射能量,波长应选在其透过率较高的波段。In order to offset influence of emissivity change,two wavelengths of colorimetric thermometer should be a little apart and located in such a waveband that the emissivity is constant or gently varied.The shorter wavelength,the higher radiant saturation temperature.Therefore,the shorter wavelength should be used to extend temperature measuring range.In addition,substance in survey way absorbs radiation energy,the wavelength should be selected in waveband with high transmissivity through that substance.

关 键 词：波长选择 辐射亮度饱和 辐射率 介质吸收 比色温度计 辐射测温 

分 类 号：TH811.1[机械工程—仪器科学与技术]