New measurements of thermodynamic temperature T with Dielectric-Constant Gas Thermometry (DCGT) were performed at PTB from 50 K to 200 K. Particular care was taken to check for possible systematic sources of errors by performing experiments applying three working gases, namely helium, neon, and argon, the polarizability of which differs by a factor of up to eight. Together with former DCGT values of thermodynamic temperature the new results yield a consistent dataset in the range from 30 K to 200 K. This dataset is in good agreement with the newest results of Acoustic Gas Thermometry (AGT) and Refractive-Index Gas Thermometry (RIGT), which have quite different sources of uncertainty compared with DCGT. The combination of these DCGT, AGT, and RIGT data with the "Estimates of the differences between thermodynamic temperature and the ITS 90", being as an appendix of the "Mise en pratique for the definition of the kelvin in the SI" the present-day recommendation of the Consultative Committee for Thermometry, yields a new function T – T 90 versus ITS 90 temperature T 90 for the range from 35 K to 195 K, the uncertainty of which is reduced by a factor up to about four.

中文翻译：

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从 30 K 到 200 K 的热力学温度数据

在 50 K 至 200 K 的 PTB 上使用介电常数气体温度计 (DCGT) 对热力学温度 T 进行了新的测量。通过使用三种工作气体（即氦气、氖气）进行实验，特别注意检查可能的系统误差源和氩气，其极化率相差高达八倍。连同之前的热力学温度 DCGT 值，新结果产生了一个范围从 30 K 到 200 K 的一致数据集。该数据集与声学气体温度测量 (AGT) 和折射率气体温度测量 (RIGT) 的最新结果非常吻合)，与 DCGT 相比，它们具有完全不同的不确定性来源。这些 DCGT、AGT 和 RIGT 数据与“热力学温度和 ITS 90 之间差异的估计”的组合