1.1 该分类确定了一个简明代码，可由成像仪器用于报告碳氢化合物石油产品中的固体颗粒和不溶性水含量。编码系统包括报告水含量和颗粒计数 ≥ 1. µm范围。 注1: 校准不符合ISO 11171。未推断出与ISO 4406及其要求的可比性。 1.2 它适用于通过投影等效颗粒直径测量颗粒尺寸的成像仪器（参见 3.1.1 )使用可追溯至NIST的粒度和计数标准对其进行校准和验证。 2. 1.3 由于方法和仪器类型及分辨率的变化，结果报告将包括用于进行分析的ASTM标准。 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。 1.5 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和健康实践，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====== 4.1 本规范的目的是简化用成像仪器测量石油产品中固体颗粒计数和水滴浓度的报告。工业界习惯于使用三位数代码来报告污染程度，因此提出这种成像仪器报告方法是为了以类似的格式组织结果。 4.2 按照中的首选数量范围报告本分类所述的颗粒计数结果 表1 . 首选编号最初由Charles Renard开发，并编入ISO 3。该格式是首选报告格式，因为ISO 4406无法报告水。 4.3 成像仪器能够识别与固体分离的不溶性水滴，因此在三（或四）个固体颗粒代码后添加后缀代码，以报告百万分之一（ppm（v））的含水量。为了报告含水量，检测到的液滴将转换为ppm（v）。如果有用，可以报告水滴大小的分布，但不是必需的。

1.1 This classification identifies a concise code which can be used by imaging instruments for reporting of solid particles and insoluble water content in hydrocarbon-based petroleum products. The coding system includes the reporting of water content and particle counts in the ≥ 1 µm range. Note 1: Calibration is not in accordance with ISO 11171. Comparability to ISO 4406 and its requirements is not inferred. 1.2 It is valid for imaging instruments measuring particle size by projected equivalent particle diameter (see 3.1.1 ), and which are calibrated and verified using particle size and count standards traceable to NIST. 2 1.3 Due to the variation of method and instrument types and resolutions, the reporting of results will include the ASTM standard used to conduct the analysis. 1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.5 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 and health 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 ====== 4.1 The purpose of this code is to simplify the reporting of solid particle counts and water droplet concentrations present in petroleum products when measured by imaging instruments. Industry is accustomed to using a three number code to report contamination levels and so this reporting method for imaging instruments is presented to organize results in a similar format. 4.2 Particle count results as described by this classification are reported per the preferred number ranges in Table 1 . Preferred numbers were originally developed by Charles Renard and codified in ISO 3. This format is the preferred reporting format since ISO 4406 has no ability to report water. 4.3 Imaging instruments are capable of identifying insoluble water droplets separate from solids, and therefore a suffix code is added after the three (or four) solid particle codes to report water content in parts per million (ppm (v)). To report water content, detected droplets will be converted to ppm (v). The distribution of water droplet size may be reported if it is useful, but it is not required.