本文件规定了放电试验和充电试验作为气动试验的替代方法 使用可压缩流体（即气体）且具有内部流道的流体动力部件 其大小可以是固定的，也可以是可变的，以确定其流量特性。然而，这 本文件不适用于使用过程中流量系数不稳定的部件，即部件 它们表现出显著的滞后行为（因为它们可以包含变形的柔性部件） 或具有内部反馈现象（如调节器）或组件 具有破裂压力的阀门，如止回阀和快速排气阀。此外 它不适用于在流量测量期间与流体交换能量的部件，例如。 汽缸，蓄能器。交叉引用: ISO 5598ISO 6358-1ISO 1219-1ISO/IEC指南98-3:2008 Ed 1ISO 5725-2ISO 21748购买本文件时可获得的所有当前修订版均包含在购买本文件中。

This document specifies a discharge test and a charge test as alternative methods for testing pneumatic fluid power components that use compressible fluids, i.e. gases, and that have internal flow passages that can be either fixed or variable in size to determine their flow-rate characteristics. However, this document does not apply to components whose flow coefficient is unstable during use, i.e. components that exhibit remarkable hysteretic behaviour (because they can contain flexible parts that deform under the flow) or that have an internal feedback phenomenon (such as regulators), or components that have a cracking pressure such as non-return (check) valves and quick-exhaust valves. In addition, it does not apply to components that exchange energy with the fluid during flow-rate measurement, e.g. cylinders, accumulators.Cross References:ISO 5598ISO 6358-1ISO 1219-1ISO/IEC GUIDE 98-3:2008 Ed 1ISO 5725-2ISO 21748All current amendments available at time of purchase are included with the purchase of this document.