本规范提供了对风机（包括离心式、轴流式和混流式风机）进行和报告试验的标准程序。本规范提供了测试风扇的规则，以确定实际操作条件下的性能。它还提供了额外的规则，用于将测量的性能转换为特定操作条件下的性能。可以确定的一些量包括风扇质量流量、风扇比能量和风扇输入功率。本规范的范围仅限于将风扇安装到预期系统中后的测试。 然而，在实验室测试中也可以遵循相同的方向。（由于系统影响，安装后的测试可能无法复制实验室测试性能。）术语风扇意味着机器主要用于移动空气或气体，而不是压缩。通常情况下，风扇、鼓风机、抽风机和压缩机之间的区别相当模糊；因此，带有这些名称的机器可以根据本规范的规定进行测试。

This Code provides standard procedures for conducting and reporting tests on fans, including those of the centrifugal, axial and mixed flow types. This Code provides the rules for testing fans to determine performance under actual operating conditions. It also provides additional rules for converting measured performance to that which would prevail under specified operating conditions. Some of the quantities that can be determined include fan mass flow rate, fan specific energy and fan input power. The scope of this Code is limited to the testing of fans after they have been installed in the systems for which they were intended. However, the same directions can be followed in a laboratory test. (The laboratory test performance may not be duplicated by a test after installation because of system effects.) The term fan implies that the machine is used primarily for moving air or gas rather than compression. The distinction between fans, blowers, exhausters, and compressors in common practice is rather vague; accordingly, machines that bear any of these names may be tested under the provisions of this Code.