1.1 本规程是正确使用红外成像系统对木质或金属框架的建筑墙壁、天花板、屋顶和地板进行定性热检查的指南，这些墙壁、天花板和地板在框架构件之间的空间中包含隔热材料。该程序允许检测绝缘不足或缺失的空腔，并允许识别绝缘明显足够的区域。 1.2 这种做法为检测疑似绝缘缺失提供了可靠的手段。它还提供了检测部分厚度绝缘、安装不当绝缘或在使用中损坏绝缘的可能性。 绝缘缺失或外壳故障的证明需要独立验证。验证技术，如目视检查或 原位 R -价值计量超出了本实践的范围。 1.3 这种做法仅限于框架结构，尽管所有建筑类型都使用了热成像技术。（ISO 6781） 1.4 描述了在各种环境条件下所需的仪器和校准。从结构内部和外部进行检查时，应考虑仪表要求和测量程序。每个有利位置都提供了对另一侧隐藏区域的视觉访问。 1.5 以英寸磅为单位的数值应视为标准。括号中给出的值是国际单位制的数学转换，仅供参考，不被视为标准。 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）。本标准的使用者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。 具体的预防说明见 注释1 和 注释3 . 1.7 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。 ====意义和用途====== 5.1 尽管红外成像系统有可能确定与墙壁、屋顶、地板或天花板的热性能有关的许多因素，但本实践的重点是确定隔热层是否缺失或隔热装置是否出现故障。不需要记录其他明显原因引起的异常热图像；然而，如果记录为补充信息，其解释可能需要本实践中未介绍的程序和技术。

1.1 This practice is a guide to the proper use of infrared imaging systems for conducting qualitative thermal inspections of building walls, ceilings, roofs, and floors, framed in wood or metal, that contain insulation in the spaces between framing members. This procedure allows the detection of cavities where insulation is inadequate or missing and allows identification of areas with apparently adequate insulation. 1.2 This practice offers reliable means for detecting suspected missing insulation. It also offers the possibility of detecting partial-thickness insulation, improperly installed insulation, or insulation damaged in service. Proof of missing insulation or a malfunctioning envelope requires independent validation. Validation techniques, such as visual inspection or in-situ R -value measurement, are beyond the scope of this practice. 1.3 This practice is limited to frame construction even though thermography is used on all building types. (ISO 6781) 1.4 Instrumentation and calibration required under a variety of environmental conditions are described. Instrumentation requirements and measurement procedures are considered for inspections from both inside and outside the structure. Each vantage point offers visual access to areas hidden from the other side. 1.5 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. Specific precautionary statements are given in Note 1 and Note 3 . 1.7 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 Although infrared imaging systems have the potential to determine many factors concerning the thermal performance of a wall, roof, floor, or ceiling, the emphasis in this practice is on determining whether insulation is missing or whether an insulation installation is malfunctioning. Anomalous thermal images from other apparent causes are not required to be recorded; however, if recorded as supplemental information, their interpretation is capable of requiring procedures and techniques not presented in this practice.