一、引言本单位参照JJG226-2001《双金属温度计检定规程》,采用比较法对双金属温度计进行校准,标准器为二等标准铂电阻温度计。本文以测量范围为0~160℃,分度值为2℃的双金属温度计为例,对其在100℃校准结果的不确定度进行评定。二、标准设备标准为二等铂电阻温度计标准装置,如表1所示。 I. Introduction The unit reference JJG226-2001 “bimetallic thermometer test procedures”, the use of comparative method to calibrate the bimetallic thermometer, standard for second-class standard platinum resistance thermometer. In this paper, a bimetallic thermometer with a measuring range of 0 ~ 160 ℃ and an indexing value of 2 ℃ is taken as an example to evaluate the uncertainty of its calibration results at 100 ℃. Second, the standard equipment standard for second-class platinum resistance thermometer standard device, as shown in Table 1.