1.1 本指南涵盖了规范中列出的ANSI热电偶类型的使用 E230/E230M 用于金属测试中典型温度下的高温机械测试。 注1: 机械测试的典型条件是规定温度高达1800℃ 华氏度（982 °C）在一个大气压下的空气中。 1.1.1 本指南重点介绍最常用的贱金属和贵金属ANSI K、N、R和S型热电偶。 1.1.2 规范中列出的其他ANSI热电偶类型 E230/E230M 如果遵循特定预防措施和最高使用温度，则可以使用。 1.1.3 它不包括护套热电偶的使用。 1.2 以英寸-磅为单位的数值应视为标准值。 括号中给出的值是到国际单位制的数学转换，仅供参考，不被视为标准值。 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。 1.4 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====== 6.1 本指南介绍了在典型条件下高温机械试验中使用热电偶和相关设备测量温度的技术。试验持续时间从拉伸、压缩、杨氏模量和超塑性性能试验的分钟到蠕变、应力断裂、蠕变断裂、缺口拉伸和应力松弛试验的数千小时不等。 6.2 由于高温机械性能对温度高度敏感，用户应尽一切努力进行准确的温度测量，并提供稳定的测试温度控制。本指南的目标是为用户提供良好的高温测量实践和技术，以精确控制高温环境的温度- 温度机械测试。 6.3 本指南中给出了在整个试验期间保持稳定温度的技术。 6.4 如果遵循本指南中的技术，则测试方法中使用的指示温度和真实温度之间的差异 E21 , E111 , E139 , E292年 , E328 , E2448 ，并练习 2009年 将降低到最低实际水平。

1.1 This guide covers the use of ANSI thermocouple Types listed in Specification E230/E230M for elevated-temperature mechanical testing at temperatures typical in testing of metals. Note 1: Typical conditions for mechanical testing are specified temperatures up to 1800 °F (982 °C) in air at one atmosphere of pressure. 1.1.1 This guide focuses on most commonly used base metal and noble metal ANSI type K, N, R, and S thermocouples. 1.1.2 Other ANSI thermocouple types that are listed in Specification E230/E230M may be used if the specific precautions and maximum temperatures for their use are followed. 1.1.3 It does not cover the use of sheathed thermocouples. 1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered 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 ====== 6.1 This guide presents techniques on the use of thermocouples and associated equipment for measuring temperature in elevated-temperature mechanical testing under typical conditions. Test durations range from minutes for tension, compression, Young's modulus, and superplastic property tests to thousands of hours for creep, stress-rupture, creep rupture, notch tension, and stress-relaxation tests. 6.2 Since elevated-temperature mechanical properties are highly sensitive to temperature, users should make every effort practicable to make accurate temperature measurements and provide stable control of the test temperature. The goal of this guide is to provide users with good pyrometric practice and techniques for precise temperature control for elevated-temperature mechanical testing. 6.3 Techniques are given in this guide for maintaining a stable temperature throughout the period of test. 6.4 If the techniques of this guide are followed, the difference between indicated temperature and true temperature, as used in Test Methods E21 , E111 , E139 , E292 , E328 , E2448 , and Practice E209 will be reduced to the lowest practical level.