1.1这些试验方法描述了两种技术，用于测量可配置为单个区域的建筑物中通过建筑围护结构的空气泄漏率。这两种技术都使用孔板送风机门来诱导整个建筑围护结构的压差，并测量这些压差和由此产生的气流。压差和气流的测量用于确定外壳的气密性和其他泄漏特性。 1.2这些试验方法允许在减压和加压下进行试验。 1.3这些试验方法适用于室内外温差小和低风压条件；测量结果的不确定性随着风速和温差的增加而增加。 1.4这些试验方法不测量正常天气和建筑物运行条件下的换气率。要直接测量换气率，请使用测试方法E 741。 1.5这些方法的文本引用了提供解释材料的注释和脚注。 这些注释和脚注（不包括表和图中的注释和脚注）不应视为本标准的要求。 1.6 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全和健康实践，并确定监管限制的适用性。 具体危险说明见第7节。

1.1 These test methods describe two techniques for measuring air leakage rates through a building envelope in buildings that may be configured to a single zone. Both techniques use an orifice blower door to induce pressure differences across the building envelope and to measure those pressure differences and the resulting airflows. The measurements of pressure differences and airflows are used to determine airtightness and other leakage characteristics of the envelope. 1.2 These test methods allow testing under depressurization and pressurization. 1.3 These test methods are applicable to small indoor-outdoor temperature differentials and low wind pressure conditions; the uncertainty in the measured results increases with increasing wind speeds and temperature differentials. 1.4 These test methods do not measure air change rate under normal conditions of weather and building operation. To measure air change rate directly, use Test Methods E 741. 1.5 The text of these methods reference notes and footnotes that provide explanatory material. These notes and footnotes, excluding those in tables and figures, shall not be considered as requirements of the standard. 1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For specific hazard statements see Section 7.