1.1 本试验方法涵盖了一个标准实验室程序，用于在整个样本的规定压差条件下测定外窗、天窗、幕墙和门的漏气率。所述试验方法适用于整个试样的恒温恒湿试验。有兴趣对暴露在整个试样不同温差下的装置进行漏气试验的人员应参考试验方法 E1424 . 1.2 本实验室程序适用于外窗、天窗、幕墙和门，旨在仅测量与组件相关的泄漏，而非安装。试验方法可用于后一目的。 注1: 在不受控制的条件下或在试样上存在温差的情况下进行试验可能会影响空气泄漏率。本试验方法未解决此问题。 1.3 本试验方法适用于实验室。 对已安装装置进行现场空气泄漏试验感兴趣的人员应参考试验方法 E783 . 1.4 有兴趣评估建筑材料透气性的人员应参考试验方法 E2178年 . 1.5 对确定空气屏障组件漏气感兴趣的人员应参考试验方法 E2357 . 1.6 使用本程序的人员应熟悉流体力学、仪器实践领域，并对开窗产品和组件有总体了解。 1.7 以国际单位制或英寸-磅单位表示的数值应单独视为标准值。每个系统中规定的值不一定是精确的等价物；因此，为确保符合本标准，每个系统应独立使用，且两个系统的值不得组合。 1.8 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、健康和环境实践，并确定监管限制的适用性。 有关具体的危险说明，请参阅第节 7. . 1.9 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。 ====意义和用途====== 5.1 本试验方法是确定环境条件下规定气压差下的漏气特性的标准程序。 注2: 作用在建筑围护结构上的气压差变化很大。文献中讨论了影响气压差的因素以及由此产生的与建筑物内环境相关的空气泄漏的影响。 4- 6. 在规定要使用的试验压差时，应充分考虑这些因素。 5.2 空气泄漏率有时用于比较目的。除非被测试和比较的组件具有基本相同的尺寸、配置和设计，否则此类比较可能无效。

1.1 This test method covers a standard laboratory procedure for determining the air leakage rates of exterior windows, skylights, curtain walls, and doors under specified differential pressure conditions across the specimen. The test method described is for tests with constant temperature and humidity across the specimen. Persons interested in performing air leakage tests on units exposed to various temperature differences across the specimen should reference Test Method E1424 . 1.2 This laboratory procedure is applicable to exterior windows, skylights, curtain walls, and doors and is intended to measure only such leakage associated with the assembly and not the installation. The test method can be adapted for the latter purpose. Note 1: Performing tests under uncontrolled conditions or with a temperature differential across the specimen may affect the air leakage rate. This is not addressed by this test method. 1.3 This test method is intended for laboratory use. Persons interested in performing field air leakage tests on installed units should reference Test Method E783 . 1.4 Persons interested in evaluating air permeance of building materials should reference Test Method E2178 . 1.5 Persons interested in determining air leakage of air barrier assemblies should reference Test Method E2357 . 1.6 Persons using this procedure should be knowledgeable in the areas of fluid mechanics, instrumentation practices, and shall have a general understanding of fenestration products and components. 1.7 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined. 1.8 This standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. For specific hazard statement, see Section 7 . 1.9 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 5.1 This test method is a standard procedure for determining the air leakage characteristics under specified air pressure differences at ambient conditions. Note 2: The air pressure differences acting across a building envelope vary greatly. The factors affecting air pressure differences and the implications or the resulting air leakage relative to the environment within buildings are discussed in the literature. 4- 6 These factors should be fully considered in specifying the test pressure differences to be used. 5.2 Rates of air leakage are sometimes used for comparison purposes. Such comparisons may not be valid unless the components being tested and compared are of essentially the same size, configuration, and design.