1.1 本规程为环境室外空气质量测量用基于传感器的连续仪器的性能评估建立了标准化试验。它描述了实验室和现场测试，这些测试提供了有关候选传感器重复性、灵敏度、线性、交叉干扰、漂移和与参考仪器的可比性的信息。 1.2 本规程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 本实施规程中包含的评估程序适用于单独或组合测量环境空气中室外标准污染物:颗粒物（PM）的传感器 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. )浓度与公共卫生有关。 1.4 测试应由能够证明其运行符合国际公认测试实验室质量标准（如ISO/IEC 17025）的主管实体进行。 1.5 单位- 以国际单位表示的数值视为标准值。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（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 本规程为环境空气质量测量用基于传感器的连续仪器的性能评估建立了标准化测试。公共和私人空气监测机构已表明，它们是部署空气质量传感器和仪器的推动力，以量化社区、学校周围、工业设施周围和其他地方的空气污染物浓度。空气质量传感器的用户需要有关这些设备的性能和限制的信息，以便能够确定其适用于各种用途的明智决策。本规程描述了提供候选仪器重复性、灵敏度、线性、交叉性信息的实验室和现场测试- 干扰、漂移和与政府机构等实体通常使用的成本更高的工具的可比性。空气质量传感器首先在实验室室内进行评估，方法是比较其对参考仪器的响应，并用干扰物对气体传感器进行挑战。然后将传感器部署在室外，针对参考空气质量仪器，在两个气候不同的地点进行现场测试。本规程旨在在建立基于传感器的室外环境空气监测最低性能质量的标准和规范中引用。 5.2 本规程适用于测量环境空气中一种或多种标准污染物（臭氧、一氧化碳、二氧化氮、二氧化硫、PM）的空气质量传感器 10 和PM 2.5 )可在室外环境中操作，并可记录浓度读数。它不适用于需要额外外壳用于室外部署或后处理以将其输出信号转换为污染物浓度读数的设备或传感器。 5.3 预计该做法的主要用户将是室外空气质量传感器的制造商、开发商和分销商、空气质量机构和环境顾问。

1.1 This practice establishes standardized tests for the performance evaluation of sensor-based continuous instruments for ambient outdoor air quality measurements. It describes both laboratory and field tests that provide information on candidate sensor repeatability, sensitivity, linearity, cross-interferences, drift, and comparability against reference instruments. 1.2 This practice does not apply to sensors or instruments that remotely measure atmospheric pollutants using open path, lidar, or imaging technology. 1.3 The evaluation procedures contained in this practice are 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 Testing 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. 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. ====== Significance And Use ====== 5.1 This practice establishes standardized tests for the performance evaluation of sensor-based continuous instruments for ambient air quality measurements. Public and private air monitoring interests have manifested themselves as a driving force for the deployment of air quality sensors and instruments to quantify air pollutant concentrations in communities, around schools, around industrial facilities, and elsewhere. Users of air quality sensors require information on the performance and limitations of these devices so that informed decisions regarding their suitability for various purposes can be determined. This practice describes both laboratory and field tests that provide information on candidate instrument repeatability, sensitivity, linearity, cross-interferences, drift and comparability with more costly instruments typically used by entities such as government agencies. The air quality sensors are first evaluated in a laboratory chamber by comparing their response to a reference instrument and challenging the gas sensors with interferents. The sensors are then deployed outdoors for field testing at two sites with different climates against reference air quality instruments. This practice is intended to be referenced in standards and codes that establish minimum performance quality for sensor-based ambient outdoor air monitoring. 5.2 This practice is intended for air quality sensors that measure one or more of the criteria pollutants in ambient air (ozone, carbon monoxide, nitrogen dioxide, sulfur dioxide, PM 10 and PM 2.5 ) that can be operated in outdoor environments and can log a concentration reading. It is not intended for devices or transducers that require additional enclosures for deployment outdoors or post-processing to convert their output signal into a pollutant concentration reading. 5.3 It is anticipated that the main users of this practice will be manufacturers, developers, and distributors of outdoor air quality sensors, air quality agencies, and environmental consultants.