摘要
介绍了被测体辐射率因受材料、表面状态、温度、波长及分布方向的影响而引起的测温误差变化、以及如何选用合适的辐射率使由此造成的测温误差最小的计算方法．
The change of emissivity measured is the main factor which influence the measurement accuracy. By analysis of the characteristics and ralationships between emissivity and material. surface condition. temperature. wavelengh as well as distributive direction. are given. The methods for calculating the temperature error caused by the change of emissivity and selections of measuring system according to the changes of the emissivity.
关键词
辐射测温
辐射率
温度误差
精度
radiation temperature measurement
emissivity
temperature error
