An adiabatic calorimeter for calibrating capsule type thermometers (CSPRTs) in the range 54 K to 273 K
An adiabatic calorimeter for calibrating capsule type thermometers (CSPRTs) in the range 54 K to 273 K
复制标题
用于校准 54 K 至 273 K 范围内的胶囊式温度计 (CSPRT) 的绝热热量计
DOI：
10.1051/ijmqe/2012015
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
A. E. Matarawy
中科院分区：
文献类型：
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作者：
M. G. Ahmed;A. E. Matarawy
在埃及国家标准研究所（NIS-Egypt）建立了一个新的比较系统，用于校准273.16 K以下的胶囊型标准铂电阻温度计（csprt）。该系统可以同时比较两个csprt。镀金比较块，其中csprt安装校准，是由无氧高导电性铜。给出了系统的描述和比较块以及比较方法。与系统温度控制相关的标准不确定度估计为0.04 mK。使用比较系统获得的csprt校准值与直接实现ITS-90在组合标准不确定度内的低温固定点所获得的值吻合良好。
A new comparison system has been constructed for the calibration of capsule-type standard platinum resistance thermometers (CSPRTs) below 273.16 K at the National Institute of Standards (NIS-Egypt). The system can compare two CSPRTs at once. A gold plated comparison block, in which CSPRTs are mounted for calibration, is made from oxygen-free high-conductivity copper. A description of the system and the comparison block along with the comparison method is given. The standard uncertainty related to the temperature control of the system is estimated to be 0.04 mK. The calibrated values for CSPRTs and obtained using the comparison system are in good agreement with those obtained by the direct realization of the low temperature fixed points of the ITS-90 within the combined standard uncertainty.