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本文介绍一种应用能量比较法测量材料发射率的装置,并给出实验结果。装置结构简单,通用性强,控温精度高,试件易于制备。总的测量不确定度为±(2～4)%。
This paper introduces a device for measuring the emissivity of materials by using energy comparison method and gives the experimental results. The device has the advantages of simple structure, strong universality, high temperature control precision and easy preparation of test pieces. The total measurement uncertainty is ± (2 to 4)%.