1.1 本规范涵盖了适用于直接浸入式温度测量的金属护套工业铂电阻温度计（PRT）的要求。它适用于平均电阻温度系数在0到100°C之间为0.385的PRT %/0°C时的标称电阻为100Ω或其他规定值。本规范涵盖适用于全部或部分温度范围的PRT −200至650°C。规定了电阻-温度关系和公差以及物理、性能和测试要求。 1.2 本规范中的温度值基于1990年国际温标（ITS-90）。 2. 1.3 以英寸-磅单位或国际单位制（公制）表示的数值可单独视为标准值。每个系统中规定的值不是精确的等效值，每个系统应相互独立。 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 本规范旨在为典型工业铂电阻温度计（PRT）的指定配置提供通用术语、电阻与温度特性、精度分类和检查要求。 4.2 本规范可作为文件的一部分，用于支持此类温度计的采购和讨论谈判。

1.1 This specification covers the requirements for metal-sheathed industrial platinum resistance thermometers (PRT's) suitable for direct immersion temperature measurement. It applies to PRT's with an average temperature coefficient of resistance between 0 and 100 °C of 0.385 %/°C and nominal resistance at 0 °C of 100 Ω or other specified value. This specification covers PRT's suitable for all or part of the temperature range −200 to 650 °C. The resistance-temperature relationship and tolerances are specified as well as physical, performance, and testing requirements. 1.2 The values of temperature in this specification are based on the International Temperature Scale of 1990 (ITS-90). 2 1.3 The values stated in inch-pound units or SI (metric) units may be regarded separately as standard. The values stated in each system are not exact equivalents, and each system shall be independent of the other. 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 This specification is written to provide common terminology, resistance versus temperature characteristics, accuracy classification, and inspection requirements for a specified configuration of a typical industrial platinum resistance thermometer (PRT). 4.2 This specification may be used as part of the documentation to support negotiations for the purchase and discussion of such thermometers.