Evaluation of the temperature scale of SPRT calibrated at the triple point of sulfur hexafluoride

Evaluation of the temperature scale of SPRT calibrated at the triple point of sulfur hexafluoride
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六氟化硫三相点校准 SPRT 温标的评估

DOI:
10.1016/j.measen.2021.100211
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发表时间:
2021
期刊:
Measurement: Sensors
影响因子:
--
通讯作者:
Nakano Tohru
Nakano Tohru
中科院分区:
--
文献类型:
--
作者:
Kawamura Yasuki;Nakano Tohru

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本文对标准铂电阻温度计(SPRT)在六氟化硫三相点(TPSF 6)上标定的温度标度的非唯一性进行了评价,TPSF 6是替代汞三相点(TPHg)的候选物之一。在14 ~ 250 K温度范围内,利用精密的膜盒式温度计比对系统,对三台在TPSF 6上标定的SPRT与参考温度计进行了比对。同时,还对SPRT检定不确定度传播引起的温标不确定度进行了评定。结果表明,在TPSF 6上标定的SPRT温标的非唯一性与ITS-90相当。这意味着TPSF 6的三相点具有实现与ITS-90相当的温标的能力。
We evaluated the non-uniqueness of the temperature scale of the standard platinum resistance thermometer (SPRT) calibrated at the tripe point of sulfur hexafluoride (TPSF6), which is one of the candidates for the substitute of the triple point of mercury (TPHg). Three SPRTs calibrated at the TPSF6were compared with a reference thermometer from 14 K to 250 K by using a precise comparison system for capsule type of thermometers. The uncertainty of the temperature scales from propagation of the uncertainties for calibrating SPRT was also evaluated. The result shows that the non-uniqueness of the temperature scale of the SPRT calibrated at the TPSF6was almost equivalent to that of the ITS-90. This means that the triple point of TPSF6possessed a capability for realization of the temperature scale which was equivalent to the ITS-90.
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影响因子: 2.2
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