1.1 本指南涵盖了自动废水取样器的选择和使用，包括用于获取代表性样品的程序。自动废水取样器用于无人值守地收集代表废水体中感兴趣参数的样品。虽然本指南主要涉及废水取样，但相同的自动取样器可用于对工艺流和自然水体进行取样。 1.2 该指南没有涉及规划废物取样活动的一般指南（见指南 D4687 )制定数据质量目标（见实践 D5792 )监测系统的设计和收集样本数量的确定（见指南 D6311 )任何特定类型取样器的操作细节， 现场 感兴趣参数的测量、数据评估和结果数据的统计解释（见指南 D6233 )，或取样和现场质量保证（见指南 D5612 ). 它也没有涉及地下水取样。 1.3 以国际单位制表示的值应被视为标准值。本标准不包括其他计量单位。 1.3.1 例外情况-- 括号中给出的英寸-磅单位仅供参考。 1.4 本标准并不旨在解决与其使用相关的所有安全问题（如果有的话）。本标准的使用者有责任在使用前建立适当的安全、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====== 4.1 本指南为负责设计和实施废水取样计划的人员提供了自动废水取样器类型的总结，讨论了不同类型取样器的优缺点，并介绍了推荐的使用程序。 现场设置主要包括但不限于封闭（如下水道）系统或开放（如溪流或明沟以及取样压力管线）系统中的明渠流量。

1.1 This guide covers the selection and use of automatic wastewater samplers, including procedures for their use in obtaining representative samples. Automatic wastewater samplers are intended for the unattended collection of samples that are representative of the parameters of interest in the wastewater body. While this guide primarily addresses the sampling of wastewater, the same automatic samplers may be used to sample process streams and natural water bodies. 1.2 The guide does not address general guidelines for planning waste sampling activities (see Guide D4687 ), development of data quality objectives (see Practice D5792 ), the design of monitoring systems and determination of the number of samples to collect (see Guide D6311 ), operational details of any specific type of sampler, in situ measurement of parameters of interest, data assessment and statistical interpretation of resultant data (see Guide D6233 ), or sampling and field quality assurance (see Guide D5612 ). It also does not address sampling groundwater. 1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.3.1 Exception— The inch-pound units given in parentheses are for information only. 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 ====== 4.1 This guide provides persons responsible for designing and implementing wastewater sampling programs with a summary of the types of automatic wastewater samplers, discusses the advantages and disadvantages of the different types of samplers, and addresses recommended procedures for their use. The field settings are primarily, but not limited to, open channel flows in enclosed (e.g., sewer) systems or open (e.g., streams or open ditches, and sampling pressure lines) systems.