Based on the verification regulation of PRT, this paper studies the temperature characteristics of PRT, suggests a method of improving the accuracy of measurement and supplies the uncertainty of calibration point.

• 摘要分析了检定规程对铂电阻温度计的要求，通过研究铂电阻温度计的测温特性，提出了提高铂电阻温度计测量精度的方法，并给出了在温度校准点的测量不确定度。