1.1 该测试方法描述了热分析仪经过时间信号的校准或性能确认。 1.2 以国际单位制表示的数值应视为标准。本标准中不包括其他计量单位。 1.3 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的使用者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。 1.4 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。 ===意义和用途====== 5.1 大多数热分析实验是在温度是独立参数的温度升高条件下进行的。然而，一些实验是在等温温度条件下进行的，其中事件的经过时间被测量为独立参数。等温动力学（试验方法 E2070 )，热稳定性（试验方法 E487 )，氧化诱导时间（OIT）（试验方法 D3895 ， D4565 ， D5483 ， E1858 、和规范 D3350 )和干燥损失（试验方法 E1868 )是这类实验的常见例子。 5.2 包括热分析仪在内的现代科学仪器通常以优异的精度和准确性测量经过的时间。在这种情况下，可能只需要通过与合适的参考进行比较来确认仪器的性能。只有极少数情况下，才可能需要通过使用校准因子来校正仪器经过时间信号的校准。 5.3 对于使用热分析仪的测试方法，有必要获得仅为重复性相对标准偏差（标准偏差除以平均值）0.1倍的经过时间信号一致性，以百分比表示。对于第节中列出的测试方法 2. 此一致性为0.1 %.

1.1 This test method describes the calibration or performance confirmation of the elapsed-time signal from thermal analyzers. 1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.3 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. 1.4 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 Most thermal analysis experiments are carried out under increasing temperature conditions where temperature is the independent parameter. Some experiments, however, are carried out under isothermal temperature conditions where the elapsed time to an event is measured as the independent parameter. Isothermal Kinetics (Test Methods E2070 ), Thermal Stability (Test Method E487 ), Oxidative Induction Time (OIT) (Test Methods D3895 , D4565 , D5483 , E1858 , and Specification D3350 ) and Loss-on-Drying (Test Methods E1868 ) are common examples of these kinds of experiments. 5.2 Modern scientific instruments, including thermal analyzers, usually measure elapsed time with excellent precision and accuracy. In such cases, it may only be necessary to confirm the performance of the instrument by comparison to a suitable reference. Only rarely will it may be required to correct the calibration of an instrument's elapsed time signal through the use of a calibration factor. 5.3 It is necessary to obtain elapsed time signal conformity only to 0.1 times the repeatability relative standard deviation (standard deviation divided by the mean value) expressed as a percent for the test method in which the thermal analyzer is to be used. For those test methods listed in Section 2 this conformity is 0.1 %.