1.1 本试验方法包括 启动阈值 ， 距离常数 ， 传递函数 和 离轴响应 在风洞中直接测量的杯形风速计或螺旋桨风速计。 1.2 该测试方法提供了在风洞气流环境中测量杯状风速计或螺旋桨风速计性能的方法。将这些方法确定的值转移到大气流量时，必须理解两个流动系统之间存在差异。 1.3 以国际单位制表示的数值应视为标准。SI单位后括号中给出的值仅供参考，不视为标准值。 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。 1.5 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 该试验方法为不同类型的旋转式风速计，特别是杯状风速计和螺旋桨风速计的比较提供了标准。监管机构的规范 ( 4- 7. ) 工业协会具有特定的性能值。 本标准提供了一种明确的测量方法 启动阈值 ， 距离常数 ， 传递函数 和 离轴响应 。

1.1 This test method covers the determination of the starting threshold , distance constant , transfer function , and off-axis response of a cup anemometer or propeller anemometer from direct measurement in a wind tunnel. 1.2 This test method provides for a measurement of cup anemometer or propeller anemometer performance in the environment of wind tunnel air flow. Transference of values determined by these methods to atmospheric flow must be done with an understanding that there is a difference between the two flow systems. 1.3 The values stated in SI units are to be regarded as standard. The values given in parentheses after SI units are provided for information only and are not considered standard. 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 ====== 5.1 This test method provides a standard for comparison of rotating type anemometers, specifically cup anemometers and propeller anemometers, of different types. Specifications by regulatory agencies ( 4- 7 ) and industrial societies have specified performance values. This standard provides an unambiguous method for measuring starting threshold , distance constant , transfer function , and off-axis response .