1.1 本规程涵盖了测定总水分低于15%的单阶段程序 % 在煤中减少到2.36 毫米[编号。 8筛]上部尺寸。本规程仅用于测定总水分。进行本试验的材料不得用于确定其他试验参数。人们认识到，试验条件可能会增加某些煤的显著氧化效应。如果涉及氧化电位，则使用这种单阶段方法应事先征得有关各方的同意。 本规程不得解释为总水分的仲裁标准规程。出于仲裁目的，本规程的用户可参考试验方法 D3302/D3302M 对于不易受氧化影响的水分测定方法。 1.2 对多个来源数据的统计分析表明，在95 % 置信水平，实践所得结果的平均值在统计学上没有差异 D2961/D2961M 和试验方法 D3302/D3302M （也就是说，在95 % 置信水平）对于介于1之间的湿度水平。 4. % 和15.8 %. 在本研究中，未对包括褐煤和无烟煤在内的某些煤种的这两个标准进行比较。 2. 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====== 5.1 需要测量总水分，以确定煤炭是否符合商业或环境规范，或两者都符合。在范围规定的限制范围内，本实施规程描述了一种测定总水分的程序，该程序比试验方法中描述的程序需要更少的时间 D3302/D3302M .

1.1 This practice covers a single-stage procedure for the determination of total moisture less than 15 % in coal reduced to 2.36 mm [No. 8 sieve] topsize. This practice is for determination of total moisture only. Materials subjected to this test shall not be used in the determination of other test parameters. It is recognized that the conditions of the test can increase the potential for significant oxidation effects on some coals. If the oxidation potential is of concern, the use of this single-stage method shall involve prior agreement between the parties involved. This practice shall not be construed as the referee standard practice for total moisture. For referee purposes, users of this practice are referred to Test Method D3302/D3302M for moisture determination methods which are not as susceptible to oxidation effects. 1.2 Statistical analysis of data from several sources indicates that at a 95 % confidence level, there is statistically no difference between the mean value of the results obtained by Practice D2961/D2961M and Test Method D3302/D3302M (that is, no bias is detected between the two methods at the 95 % confidence level) for moisture levels between 1.4 % and 15.8 %. These two standards were not compared in this study for some ranks of coal including lignite and anthracite. 2 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 ====== 5.1 The measurement of total moisture is required to determine whether coal meets commercial or environmental specifications, or both. Within the limitations prescribed in the scope, this practice describes a procedure for determination of total moisture that requires less time than the procedures described in Test Method D3302/D3302M .