1.1 本试验方法包括测定仅覆盖头部（选项1）、手部（选项2）或脚部（选项3）的衣物的绝缘值。它描述了从加热人体模型到相对平静、凉爽环境的干传热阻力测量。 1.1.1 这是一项静态测试，在固定头部假人模型（选项1）、手部假人模型（选项2）或脚部假人模型（选项3）上提供基线服装测量。 1.1.2 本试验方法未涉及身体形态位置、移动和与其他表面接触的影响。 1.2 获得的绝缘值仅适用于评估的特定服装项目和每次测试的指定环境条件，尤其是与空气流动有关的环境条件。 1.3 以clo或SI单位表示的值应单独视为标准值。 每个系统应独立使用。在整个报告过程中，应清楚地识别热电阻单位clo或SI，并保持单位的一致性。 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 只要使用相同的实验程序和测试条件进行每次测试，该测试方法可用于量化和比较不同服装项目提供的绝缘。例如，可以评估手套设计和面料的变化。可以测量服装项目的分层、闭合和合身效果。 4.2 衣服提供的绝缘测量是复杂的，取决于使用的设备和技术。在该范围的测试方法中，建立足以涵盖所有意外事件的细节是不现实的。偏离本试验方法中的说明可能会导致显著不同的试验结果。需要有关传热理论、温度、湿度和空气运动测量的技术知识以及测试实践，以评估哪些偏离本测试方法中给出的说明是重要的。 该方法的标准化减少了但并没有消除对此类技术知识的需求。报告结果中的任何偏差。 4.3 按照标准程序报告以国际单位制或clo单位表示的绝缘值。

1.1 This test method covers the determination of the insulation value of clothing items that cover only the head (Option 1), a hand (Option 2), or a foot (Option 3). It describes the measurement of the resistance to dry heat transfer from a heated manikin form to a relatively calm, cool environment. 1.1.1 This is a static test that provides a baseline clothing measurement on a stationary head manikin form (Option 1), hand manikin form (Option 2), or foot manikin form (Option 3). 1.1.2 The effects of body form position, movement, and contact with other surfaces are not addressed in this test method. 1.2 The insulation values obtained apply only to the particular clothing item evaluated and for the specified environmental conditions of each test, particularly with respect to air movement. 1.3 The values stated in either clo or SI units are to be regarded separately as standard. Each system shall be used independently of the other. The thermal resistance units, clo or SI, shall be identified clearly and consistency of units shall be maintained throughout reporting process. 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 test method can be used to quantify and compare the insulation provided by different clothing items as long as each test is conducted using the same experimental procedures and test conditions. For example, variations in the design and fabric used in gloves can be evaluated. The effects of layering, closures, and fit can be measured for clothing items. 4.2 The measurement of the insulation provided by clothing is complex and dependent upon the apparatus and techniques used. It is not practical in a test method of this scope to establish details sufficient to cover all contingencies. Departures from the instructions in this test method have the potential to lead to significantly different test results. Technical knowledge concerning the theory of heat transfer, temperature, humidity and air motion measurement, and testing practices is needed to evaluate which departures from the instructions given in this test method are significant. Standardization of the method reduces, but does not eliminate, the need for such technical knowledge. Report any departures with the results. 4.3 Report the insulation values in SI units or clo units as standard procedure.