1.1 本规范涵盖了基于实践中所述评估的室外环境空气质量传感器的性能标准 D8406 . 1.2 本规范不适用于使用开放路径、激光雷达或成像技术远程测量大气污染物的传感器或仪器。 1.3 本规范适用于单独或组合测量环境空气中室外标准污染物的传感器:颗粒物（PM 2.5 和PM 10 )，二氧化硫（SO 2. )，臭氧（O 3. )、一氧化碳（CO）或二氧化氮（NO 2. )浓度与公众健康相关。 1.4 应由能够证明其运行符合国际公认的测试实验室质量标准（如ISO/IEC 17025）的主管实体进行评估。 通常情况下，预期根据实践进行绩效评估的实体 D8406 将根据本规范进行评估。 1.5 单位-- 以国际单位制表示的数值应视为标准。本标准不包括其他计量单位。 1.6 本标准并不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。 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。

1.1 This specification covers performance criteria for ambient outdoor air quality sensors based on the evaluation described in Practice D8406 . 1.2 This specification does not apply to sensors or instruments that remotely measure atmospheric pollutants using open path, lidar, or imaging technology. 1.3 This specification is for sensors that alone or in combination measure outdoor criteria pollutants in ambient air: particulate matter (PM 2.5 and PM 10 ), sulfur dioxide (SO 2 ), ozone (O 3 ), carbon monoxide (CO), or nitrogen dioxide (NO 2 ) at concentrations that are relevant to public health. 1.4 Evaluation is to be performed by a competent entity able to demonstrate that it operates in conformity with internationally accepted test laboratory quality standards such as ISO/IEC 17025. Normally, it is expected that the entity undertaking the performance evaluation under Practice D8406 will perform the evaluation according to this specification. 1.5 Units— The values stated in SI units are to be regarded as standard. No other units of measurement are included in this 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. 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.