IEC TR 60216-7-2:20 24旨在验证IEC TS 60216-7-1提供与IEC 60216系列其他部分中使用的常规方法相似的温度指数的程序。循环测试结果不提供精密度的统计分析。循环测试侧重于初步研究，以了解评估和计算程序、对仪器的影响以及实验室之间的数据差异，然后确定精密度。这第二版取消并取代了2016年出版的第一版。本版构成技术修订版。 与上一版相比，此版本包括以下重大技术变更: a)增加了附录A（资料性），以提供不同聚合物类型的循环测试-聚对苯二甲酸丁二醇酯(PBY)-作为根据IEC TS 60216-7-1的方法的附加用例； b)通过增加单位对表3至表11进行了更正，并对案文进行了改进，以便对程序和观察结果进行更多的技术澄清。

IEC TR 60216-7-2:2024 is intended to validate the procedures of IEC TS 60216-7-1 in providing a similar temperature index to conventional methods used in other parts of the IEC 60216 series. The round robin test results do not provide statistical analysis for precision. The round robin test focuses on preliminary studies to understand the evaluation and calculation procedures, influence on apparatus, and data variance among laboratories before determination of precision. This second edition cancels and replaces the first edition published in 2016. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) Annex A (informative) has been added to provide a round robin test with a different polymer type - polybuthylene terephthalate (PBY) - as an additional use case of the method in accordance with IEC TS 60216-7-1;
b) Tables 3 to 11 have been corrected by adding units, and texts have been refined for more technical clarifications of the procedures and observations.