IEC 60068-3-7:20 20 RLV包含官方IEC国际标准及其红线版本。Redline版本不是官方文档，它只有英文版本，为您提供了一种快速简单的方法来比较IEC官方标准与其以前版本之间的所有变化。 IEC 60068-3-7:20 20规定了一种统一且可重复的方法，用于确认温度试验箱在考虑试验箱工作空间内空气循环的条件下装载散热或非散热试样时符合IEC 60068-2-1和IEC 60068-2-2气候试验程序中规定的要求。本文件主要供进行常规腔室性能监测的用户使用。这第二版取消并取代了2001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: -口头形式在许多地方已改为表达要求而不是建议（“shall”而不是“should”）； -表1已更新。

IEC 60068-3-7:2020 RLV contains both the official IEC International Standard and its Redline version. The Redline version is not an official document, it is available in English only and provides you with a quick and easy way to compare all the changes between the official IEC Standard and its previous edition. IEC 60068-3-7:2020 specifies a uniform and reproducible method of confirming that temperature test chambers conform to the requirements specified in the climatic test procedures of IEC 60068-2-1 and IEC 60068-2-2, when loaded with either heat-dissipating or non heat-dissipating specimens under conditions which take into account air circulation inside the working space of the chamber. This document is intended primarily for users when conducting regular chamber performance monitoring. This second edition cancels and replaces the first edition published in 2001. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
- verbal forms have, in many parts, been changed to express requirements instead of recommendations ('shall' instead of 'should');
- Table 1 has been updated.