200℃以下红外温度计校准的相关研究

摘要

A standard blackbody source is developed, which is used for calibration of infrared thermometer under 200 ℃. The effective emissivity of blackbody cavity is calculated in different ways, the results of which are higher than 0.997 each and alL Through a series of experiment, the results show that the working distance and ambient temperature are two importance influencing factors,and the optimal working distance in the calibration is obtained,the importance of keeping Constance of ambient temperature around thermometer is indicated.%研制了一种可用于200℃以下的红外温度计校准的标准黑体辐射源.应用3种不同方法的计算,得到的黑体空腔的有效发射率均在0.997以上.通过一系列的试验,得出工作距离与环境温度是2个重要影响因素,给出了校准中的最佳工作距离,并指出保持温度计环境温度恒定的重要性.