1.1 本试验方法描述了使用光栅光谱仪分析在用流体样品的特性，这些特性指示该流体和相关机械的状态。 1.2 本试验方法提供了一种使用红外光谱法评估在用流体特性的方法。它描述了一种方法，用于采样、执行分析，并使用用于现场使用的独立装置提供关键的在用流体特性。它提供在用液体在其使用寿命的任何阶段的分析，包括新使用的液体。 1.3 特别是，这些关键的在用流体特性包括氧化、硝化、硫酸化、烟尘和抗磨添加剂。它们适用于来自机械润滑油的烃类（API I-IV组）流体，包括往复式发动机机油、涡轮机油、液压油和齿轮油。 1.4 以国际单位制表示的数值应视为标准值。本标准不包括其他计量单位。 1.4.1 例外情况- 波数单位为厘米 -1 . 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。 ====意义和用途====== 5.1 该试验方法提供了一种在现场获得有用的在役流体分析特性的方法。不要将其与实验室或便携式FTIR设备混淆，这些设备根据中列出的现有测试方法提供测量 4.1.1.1 . 随着时间的推移，每种监测属性都显示出流体系统中的污染或流体的特定故障模式，这是评估流体和机械健康的关键信息。通过使用现场设备，在实验室收集样品不可行的位置和情况下，操作机器可以获得高质量的在用流体分析。这可能是因为需要实时、现场进行分析，以最大限度地延长设备的运行时间，或者需要在没有实验室分析可用的位置进行分析。

1.1 This test method describes the use of a grating spectrometer to analyze properties of an in-service fluid sample which are indicative of the status of that fluid and related machinery. 1.2 This test method provides a means for the assessment of in-service fluid properties using infrared spectroscopy. It describes a methodology for sampling, performing analysis, and providing key in-service fluid properties with a self-contained unit that is meant for field use. It provides analysis of in-service fluids at any stage of their useful life, including newly utilized fluid. 1.3 In particular, these key in-service fluid properties include oxidation, nitration, sulfation, soot, and antiwear additives. They are applicable for hydrocarbon type (API Group I-IV) fluids from machinery lubricants, including reciprocating engine oils, turbine oils, hydraulic oils, and gear oils. 1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.4.1 Exception— The unit for wavenumbers is in cm -1 . 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. ====== Significance And Use ====== 5.1 This test method provides a means for obtaining useful in-service fluid analysis properties in the field. It is not to be confused with laboratory or portable FTIR devices which provide measurements per the existing Test Methods listed in 4.1.1.1 . Each of these monitored properties has been shown over time to indicate either contamination in the fluid system or a particular breakdown modality of the fluid, which is critical information to assess the health of the fluid as well as the machinery. By utilizing the field device, it is possible for those operating machinery, in locations and situations where it is not practical to gather a sample for the laboratory, to obtain quality in-service fluid analysis. This may be due to the need to have an analysis done in real-time, on-the-spot to maximize the operational hours of equipment, or to have the analysis performed at a location where no laboratory analysis is available.