1.1 该试验方法使用燃烧室系统来评估固定式PM的性能 2.5 传感器（传感器）和粒子传感器系统（传感器系统）经受各种测试条件，包括温度、相对湿度、PM 2.5 浓度和粗颗粒物干扰浓度。 1.1.1 本试验方法涵盖可通过线路电源或足够输出的内部电池在本方法所述任何试验期间连续供电和连续运行的传感器和传感器系统。本测试方法并不旨在评估没有这些能力的传感器或传感器系统。 1.1.2 该测试方法评估传感器和传感器系统的性能，允许用户以系统的方式收集数据，以评估这些设备的能力和局限性。 1.1.3 本测试方法不用于评估没有数据存储和记录能力的传感器或传感器系统。 1.1.4 本测试方法不用于评估室内空气质量传感器和传感器系统，以监管室外空气、国土安全、执法或法医活动。 1.2 以国际单位制表示的数值应视为标准值。国际单位制后括号中给出的值仅供参考，不被视为标准值。 1.3 本标准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。 1.4 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。 1.5 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 室内空气质量差对乘员健康和性能造成了严重的急性和慢性不利影响。评估导致室内空气质量差的成分的能力对于确定改善室内空气质量的最佳做法至关重要。 5.2 使用传感器和传感器系统测量室内环境中的污染物，通过污染源控制、通风、过滤或其他处理提供改善室内空气质量所需的信息。 5.3 该方法使用配备有参考监测器的测试表征室系统来评估测试传感器或测试传感器系统对特定类型颗粒（例如，盐、聚苯乙烯乳胶或灰尘）的响应。为了便于再现结果，本方法中使用的测试颗粒是标准化的，并且具有已知的特性。用户应注意，单个颗粒类型并不代表室内发现的所有颗粒。 对于不同的颗粒类型（例如，一次或二次、有机或无机、室外或室内来源），测试传感器或测试传感器系统对参考监测器的相对响应可能会变化两倍；请参阅 6.11.3 供进一步讨论）。此外，用户应注意，光学测试传感器和测试传感器系统的粒径检测下限通常为直径0.3μm；低于该尺寸的颗粒通常未被检测到，也可能代表严重的健康问题。

1.1 This test method uses a chamber system to evaluate the performance of stationary PM 2.5 sensors (sensors) and particle sensor systems (sensor systems) subjected to various test conditions, including temperature, relative humidity, PM 2.5 concentration, and coarse PM interferent concentration. 1.1.1 This test method covers sensors and sensor systems that can be continuously powered and continuously operated for the duration of any test described in this method through line power or an internal battery of sufficient output. This test method is not meant to evaluate sensors or sensor systems without these capabilities. 1.1.2 This test method evaluates the performance of sensors and sensor systems that allow users to collect data in a systemic manner to assess the capabilities and limitations of these devices. 1.1.3 This test method is not meant to evaluate sensors or sensor systems without data storage and recording capabilities. 1.1.4 This test method is not intended to evaluate indoor air quality sensors and sensor systems for purposes of regulation of outdoor air, homeland security, law enforcement or forensic activity. 1.2 The values stated in SI units are to be regarded as standard. The values given in parentheses after SI units are provided for information only and are not considered standard. 1.3 The text of this standard references 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. 1.4 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. 1.5 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 Poor indoor air quality has been implicated in significant adverse acute and chronic impacts on occupant health and performance. The ability to assess the components contributing to poor indoor air quality is critical for determining best practices for improving indoor air quality. 5.2 Measurement of pollutants in indoor environments using sensors and sensor systems provides information needed to improve indoor air quality through pollutant source control, ventilation, filtration or other treatments. 5.3 This method uses a test characterization chamber system equipped with reference monitor(s) to evaluate the response of test sensors or test sensor systems to specific types of particles (for example, salt, polystyrene latex, or dust). To facilitate reproducible results, the test particles used within this method are standardized and have known properties. The user is cautioned that a single particle type is not representative of all particles found indoors. The relative response of test sensors or test sensor systems to a reference monitor can vary by a factor of two for different particle types (for example, primary or secondary, organic or inorganic, outdoor or indoor origin; see 6.11.3 for further discussion). Furthermore, the user is cautioned that the lower limit of particle size detection for optical test sensors and test sensor systems is generally 0.3 μm in diameter; particles below this size are generally undetected and may represent a significant health concern as well.