1.1 本规程涵盖了认证连续不透明度监测器的程序。在本规程的主要部分中，它包括设计和性能规范、测试程序和质量保证要求，以确保连续不透明度监测器满足最低设计和校准要求，这在一定程度上是必要的，以在受10 % 或更高的不透明度标准。在里面 附件A1 ，提供了附加或替代规范，用于认证用于不透明度标准小于10的应用中的不透明度监视器 %, 或者用户希望不透明度小于10 % 并选择在 附件A1 . 在这两种情况下，不透明度测量的误差预算如所示 附录X1 . 1.2 本规程特别适用于原始制造商，或参与不透明监视器维修、再制造或转售的制造商。 1.3 本规程详细介绍了具体适用于由透射计、不透明度监测器或完整不透明度监测系统组成的组件设备的各种设备配置的测试程序。 1.4 美国环境保护局（U。 S、 EPA）。对于制造商证明符合本规程的每个不透明度监测器或监测系统，制造商可颁发证书，说明不透明度监测器或监测系统符合40 CFR 60附录B性能规范1的所有适用设计和性能要求，安装后需要进行测试的除外。 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 联邦、州和地方空气污染控制机构的规定要求在许多固定的空气污染源安装连续不透明度监测器。关于受“新固定源性能标准”约束的源的不透明度监测系统的设计和性能的EPA法规，见40 CFR 60，子部分A一般规定，§60.13监测规定，附录B，性能规范1和适用的源特定子部分。许多州对不透明度监测系统采用了这些或非常类似的要求。 5. 2. 受监管的工业设施需要定期向控制机构报告连续的不透明监测数据。控制机构将这些数据用作颗粒物排放水平的间接测量，并作为过程和控制设备操作和维护实践充分性的指标。 5.3 EPA性能规范1提供了不透明度监测器的最低规范，并要求受监管设施的源所有者或运营商证明其安装的系统符合某些设计和性能规范。性能规范1通过参考采用本ASTM惯例，因此制造商可以通过选择和测试代表性仪器来证明符合某些设计规范。 5.4 经验表明，2000年8月10日修订之前的EPA性能规范1并没有解决不透明度监测系统的所有重要设计和性能参数。需要本规程中包含的其他设计和性能规范，以消除以前遇到的许多性能问题。通过设计基本透射计组件或不透明度监测器的测试程序，或在某些情况下，设计完整的不透明度监测系统，该做法还为买方和供应商提供了灵活性。然而，规范和测试程序也足够详细，以支持制造商的认证，并促进对所用程序的独立第三方评估。 5.5 满足本规程所有要求的不透明监测设备的购买者应确保不透明监测设备满足EPA性能规范1的所有适用要求，制造商可证明其符合性。购买者可以依赖制造商发布的环境温度和电源电压的工作范围规范。这些购买者还应确保，特定仪器已在制造点进行了测试，并证明符合制造商关于仪器响应时间、校准误差（基于最终用户提供的路径长度测量）、光学对准和光谱响应性能检查要求的性能规范。 符合本规程的要求可确保符合40 CFR 60附录B性能规范1的所有要求，安装后需要进行测试的要求除外。 5.6 原始制造商或参与不透明度监测器维修、再制造或转售的制造商可以使用此做法证明所提供的设备组件或不透明度监测系统满足或超过适当的设计和性能规范，或两者都满足或超过。 5.7 选择本规程的适用测试程序和规范，以解决制造商控制范围内的设备和活动； 他们不要求测试不透明系统数据记录设备或报告。 5.8 这种做法也可以作为第三方独立审计不透明监测设备制造商使用的认证程序的基础。 5.9 本规程不涉及持续的质量保证程序，这些程序是在不透明度监视器的使用寿命期间保持正确操作所需的。

1.1 This practice covers the procedure for certifying continuous opacity monitors. In the main part of this practice, it includes design and performance specifications, test procedures, and quality assurance requirements to ensure that continuous opacity monitors meet minimum design and calibration requirements, necessary in part, for accurate opacity monitoring measurements in regulatory environmental opacity monitoring applications subject to 10 % or higher opacity standards. In Annex A1 , additional or alternative specifications are provided for certifying opacity monitors intended for use in applications where the opacity standard is less than 10 %, or where the user expects the opacity to be less than 10 % and elects to use the more restrictive criteria in Annex A1 . In both cases, the error budgets for the opacity measurements are given in Appendix X1 . 1.2 This practice applies specifically to the original manufacturer, or to those involved in the repair, remanufacture, or resale of opacity monitors. 1.3 Test procedures that specifically apply to the various equipment configurations of component equipment that comprise either a transmissometer, an opacity monitor, or complete opacity monitoring system are detailed in this practice. 1.4 The specifications and test procedures contained in the main part of this practice have been adopted by reference by the United States Environmental Protection Agency (U.S. EPA). For each opacity monitor or monitoring system that the manufacturer demonstrates conformance to this practice, the manufacturer may issue a certificate that states that opacity monitor or monitoring system conforms with all of the applicable design and performance requirements of 40 CFR 60, Appendix B, Performance Specification 1 except those for which tests are required after installation. 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 Continuous opacity monitors are required to be installed at many stationary sources of air pollution by federal, state, and local air pollution control agency regulations. EPA regulations regarding the design and performance of opacity monitoring systems for sources subject to “Standards of Performance for New Stationary Sources” are found in 40 CFR 60, Subpart A General Provisions, §60.13 Monitoring Provisions, Appendix B, Performance Specification 1, and in applicable source-specific subparts. Many states have adopted these or very similar requirements for opacity monitoring systems. 5.2 Regulated industrial facilities are required to report continuous opacity monitoring data to control agencies on a periodic basis. The control agencies use the data as an indirect measure of particulate emission levels and as an indicator of the adequacy of process and control equipment operation and maintenance practices. 5.3 EPA Performance Specification 1 provides minimum specifications for opacity monitors and requires source owners or operators of regulated facilities to demonstrate that their installed systems meet certain design and performance specifications. Performance Specification 1 adopts this ASTM practice by reference so that manufacturers can demonstrate conformance with certain design specifications by selecting and testing representative instruments. 5.4 Experience demonstrated that EPA Performance Specification 1 prior to the Aug. 10, 2000 revisions did not address all of the important design and performance parameters for opacity monitoring systems. The additional design and performance specifications included in this practice are needed to eliminate many of the performance problems that were previously encountered. This practice also provides purchasers and vendors flexibility, by designing the test procedures for basic transmissometer components or opacity monitors, or in certain cases, complete opacity monitoring systems. However, the specifications and test procedures are also sufficiently detailed to support the manufacturer’s certification and to facilitate independent third party evaluations of the procedures used. 5.5 Purchasers of opacity monitoring equipment meeting all of the requirements of this practice are assured that the opacity monitoring equipment meets all of the applicable requirements of EPA Performance Specification 1 for which the manufacturer can certify conformance. Purchasers can rely on the manufacturer’s published operating range specifications for ambient temperature and supply voltage. These purchasers are also assured that the specific instrument has been tested at the point of manufacture and demonstrated to meet the manufacturer’s performance specifications for instrument response time, calibration error (based on pathlength measurements provided by the end user), optical alignment, and the spectral response performance check requirement. Conformance with the requirements of this practice ensures conformance with all of the requirements of 40 CFR 60, Appendix B, Performance Specification 1 except those requirements for which tests are required after installation. 5.6 The original manufacturer, or those involved in the repair, remanufacture, or resale of opacity monitors can use this practice to demonstrate that the equipment components or opacity monitoring systems provided meet, or exceed, or both, appropriate design and performance specifications. 5.7 The applicable test procedures and specifications of this practice are selected to address the equipment and activities that are within the control of the manufacturer; they do not mandate testing of the opacity system data recording equipment or reporting. 5.8 This practice also may serve as the basis for third party independent audits of the certification procedures used by manufacturers of opacity monitoring equipment. 5.9 This practice does not address ongoing quality assurance procedures which are needed to maintain correct operation during the lifetime of the opacity monitor.