构成泵测试的第一组，并指定精度等级测试（前a级）。工程一级和二级测试（以前的B级和C级）将是进一步标准的主题。定义使用的术语和数量，并规定测试的一般要求。未规定结构公差。

Forms the first of a set dealing with tests of pumps and specifies precision class tests (former class A). Engineering class I and class II tests (former classes B and C) will be the subject of a further standard. Defines the terms and quantities that are used and specifies general requirements for tests. Does not specify constructional tolerances.