1.1 这种做法 2. 包括评估空气质量测量方法的以下性能特征的程序:偏差（仅部分）、校准功能和线性、不稳定性、检测下限、无人值守操作周期、选择性、灵敏度和测量上限。 1.2 本规程中提出的程序仅适用于具有线性连续校准函数的空气质量测量方法，其输出变量为定义的时间平均值。线性可能是由于主输出变量的后处理。此外，假设属于相同输入状态的复制值为正态分布。将主要测量方法输出转换为所需时间平均值所需的组件被视为该测量方法的组成部分。 1.3 为了监督常规测量条件下的测量方法稳定性，可以使用简化测试检查基本性能特征，可接受的简化程度取决于先前通过本文所述程序获得的性能特征不变性知识。 1.4 仪器（自动）和手动（例如湿化学）程序之间没有根本区别，只要测量值是预定义时间间隔的平均值。因此，提出的程序适用于这两种情况。此外，它们适用于环境、工作场所和室内大气以及排放的测量方法。 1.5 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。 1.6 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。

1.1 This practice 2 covers procedures for evaluating the following performance characteristics of air quality measurement methods: bias (in part only), calibration function and linearity, instability, lower detection limit, period of unattended operation, selectivity, sensitivity, and upper limit of measurement. 1.2 The procedures presented in this practice are applicable only to air quality measurement methods with linear continuous calibration functions, and the output variable of which is a defined time average. The linearity may be due to postprocessing of the primary output variable. Additionally, replicate values belonging to the same input state are assumed to be normally distributed. Components required to transform the primary measurement method output into the time averages desired are regarded as an integral part of this measurement method. 1.3 For surveillance of measurement method stability under routine measurement conditions, it may suffice to check the essential performance characteristics using simplified tests, the degree of simplification acceptable being dependent on the knowledge on the invariance properties of the performance characteristics previously gained by the procedures presented here. 1.4 There is no fundamental difference between the instrumental (automatic) and the manual (for example, wet-chemical) procedures, as long as the measured value is an average representative for a predefined time interval. Therefore, the procedures presented are applicable to both. Furthermore, they are applicable to measurement methods for ambient, workplace, and indoor atmospheres, as well as emissions. 1.5 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. 1.6 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.