演示如何估计温湿度室中稳态温度和湿度条件的不确定性。由于这与测量方法密不可分，因此也对这些方法进行了描述。 本标准同样适用于所有环境外壳，包括房间或实验室。所使用的方法既适用于温度室，也适用于温度和湿度组合室。 本标准旨在帮助所有使用气候试验箱的人。那些已经熟悉测量不确定度的人会发现，它有助于指导典型的不确定度来源，以及如何对它们进行量化和组合。 它还旨在帮助对该主题知之甚少或一无所知的首次或临时用户。 要讨论不确定性，重要的是首先了解测量或表征的内容。试验箱性能的校准或表征与试验箱中空气的湿度和温度有关，在给定的设定点下，受试物所经历的湿度和温度。这不应与表征或校准腔室传感器混淆，这是一个单独的问题。

Demonstrates how to estimate the uncertainty of steady-state temperature and humidity conditions in temperature and humidity chambers. Since this is inextricably linked to the methods of measurement, these are also described. This standard is equally applicable to all environmental enclosures, including rooms or laboratories. The methods used apply both to temperature chambers and combined temperature and humidity chambers. This standard is meant to help everyone using climatic test chambers. Those already familiar with uncertainty of measurement will find it useful for guidance on typical sources of uncertainty and how they should be quantified and combined. It is also intended to assist the first-time or occasional user who has little or no knowledge of the subject. To discuss uncertainty, it is important first to understand what is being measured or characterized. The calibration or characterization of the performance of a chamber is concerned with the humidity and temperature of the air in the chamber, as experienced by the item under test, at a given set point. This should not be confused with characterizing or calibrating the chamber sensor, which is a separate matter.