摘要
根据温标传递的特点和需要,设计了新的精密光电高温计。该高温计测量黑体的光谱辐射亮度,结合有效波长原地测量技术,直接依据Planck辐射定律计算被测温度,具备单一参考点分度确定温标的技术能力。该高温计测温范围为800℃～2200℃,在小目标和窄谱带的测量条件下,具有分辨率高、辐射源尺寸影响小、自动化测量等特点。在900℃时温度分辨率为0 01℃。在800℃～2200℃温度范围内,置信水平为0 99时,扩展不确定度为1 0℃～2 4℃。结构参数和性能测试表明,精密光电高温计不仅适用于温度精密测量,而且可作为温标的传递标准。
A new transfer standard photoelectric pyrometer hss been designed. According to Planck's law and combinig the effective wavelength determination technology in situ, spectral radiance of a blackbody was measured by this pyrometer to calculate the blackbody temperature. Since its structure and characteristics, this kind of pyrometer is suitable to be used as a precision and transfer standard pyrometer. The resolution at 900 ℃ is 0.01 ℃. An estimation shows that uncertainties of the pyrometer are 1.0 ℃ up 2.4 ℃ in the range 800 ℃ to 2200 ℃ with 99% confidence level.
出处
《计量学报》
CSCD
北大核心
2003年第4期257-261,共5页
Acta Metrologica Sinica
关键词
计量学
光电高温计
国际温标
传递标准
不确定度
Metrology
Photoelectric pyrometer
International temperature scale
Transfer standard
Uncertainty
