1.1 本指南涵盖了量热计操作的建议程序，该量热计旨在获得温度和压力数据，作为在几乎绝热条件下发生物理化学变化的系统的时间函数。 1.2 本指南概述了根据量热计记录的时间、温度和压力数据计算热力学参数。 1.3 本指南中概述的评估可用于从全真空到反应容器和压力传感器额定压力的压力范围内。量热计的温度范围通常从环境温度变化到500 °C，但也可以由用户指定（参见 6.6 ). 1.4 以国际单位表示的数值视为标准值。本标准不包括其他计量单位。 1.5 本标准并不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。 第节概述了具体的安全预防措施 7. . 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 本指南中的数据很少（如果有的话）直接模拟化学品加工、储存和运输过程中的热事件和压力事件。然而，在采取适当预防措施的情况下，可使用本指南中获得的数据，在适当缩放数据后，预测与化学品或化学品混合物的加工、储存和运输相关的热危险和压力危险。这一点已在文献中讨论过 ( 1- 4. ) 但超出了本指南的范围。 5.2 本指南适用于在适当条件下研究催化剂、抑制剂、引发剂、反应气氛、结构材料或搅拌（如有）的影响（参见 6.1.2 ). 5.3 对于相对简单的系统，通过使用适当的温度依赖动力学理论，如阿伦尼乌斯理论和绝对反应速率理论，可以解释时间-温度或时间-压力数据 ( 5. , 6. ) .

1.1 This guide covers suggested procedures for the operation of a calorimetric device designed to obtain temperature and pressure data as a function of time for systems undergoing a physicochemical change under nearly adiabatic conditions. 1.2 This guide outlines the calculation of thermodynamic parameters from the time, temperature, and pressure data recorded by a calorimetric device. 1.3 The assessment outlined in this guide may be used over a pressure range from full vacuum to the rated pressure of the reaction container and pressure transducer. The temperature range of the calorimeter typically varies from ambient to 500 °C, but also may be user specified (see 6.6 ). 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. Specific safety precautions are outlined in Section 7 . 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 The data from this guide seldom, if ever, directly simulate thermal and pressure events in the processing, storage, and shipping of chemicals. However, the data obtained from this guide may be used, with suitable precautions, to predict the thermal and pressure hazards associated with processing, storage, and shipping of a chemical or mixture of chemicals after appropriate scaling of the data. This has been addressed in the literature ( 1- 4 ) but is beyond the scope of this guide. 5.2 This guide is suitable, under the proper conditions, for the investigation of the effects of catalyst, inhibitors, initiators, reaction atmospheres, materials of construction, or, if available, agitation (see 6.1.2 ). 5.3 Interpretation of the time-temperature or time-pressure data may be possible for relatively simple systems through the use of suitable temperature-dependent kinetic theories such as the Arrhenius and Absolute Reaction Rate theories ( 5 , 6 ) .