1.1 本试验方法包括测量线圈涂覆的有机涂层的膜厚度。操作员可以在涂装过程中或实验室环境中使用此方法。 1.2 本试验方法未规定涂层的预期膜厚/试验结果，也未规定测量涂层所需的特定“配方”文件。 1.3 以国际单位制或英寸-磅单位表示的数值应单独视为标准值。每个系统中规定的值不一定是精确的等价物；因此，为确保符合本标准，每个系统应独立使用，且两个系统的值不得组合。 1.4 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。 1.5 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====== 4.1 涂层厚度对最终产品的性能起着至关重要的作用。这包括物理性能（耐磨/耐刮擦、颜色、光泽）、化学性能（耐溶剂性）、耐腐蚀性和长期耐久性（变色、粉化、褪色）。 4.2 基于加固光学干涉的无损测量系统使用数字公式（或“配方”）转换涂层膜厚度的信号输出，这些数字公式可在一个仪器到另一个仪器之间重复。 4.3 ROI测量单元进行大量测量，这些测量可以在确定的时间段内读取，并且每个数据点都可以记录和报告。 4.4 由于在应用过程中可能影响膜厚度的变量数量以及在确定配方时必须在测量单元中设置的变量数量，生产商和用户根据涂层系统就配方设置达成一致非常重要。

1.1 This test method encompasses measuring the film thickness of a coil coated organic coating layer. Operators can use this method in process during the coating application or in a laboratory setting. 1.2 This test method does not specify the expected film thickness/test results for a coating, nor the specific “recipe” file needed to measure a coating. 1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined. 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 Coating film thickness plays a critical role in the performance of the final product. This includes physical properties (abrasion/scratch resistance, color, gloss), chemical properties (solvent resistance), corrosion resistance, and long-term durability (color change, chalk, fade). 4.2 The non-destructive measurement system based on ruggedized optical interference transforms signal outputs in coating film thickness using digital formulas (or “recipes”) which are reproducible from one instrument to another. 4.3 The ROI measurement unit takes a significant number of measurements which can be read in a determined period of time and each of these data points is recorded and reportable. 4.4 Due to the number of variables that can affect film thickness during application and the number of variables that must be set in the measurement unit while determining a recipe, it is important for the producer and the user to agree upon recipe settings depending on the coating system.