标准摘要
[中文适用范围]： 本文件提供了一种压缩空气采样方法，以及选择合适测量设备以确定其颗粒大小和数量浓度（在本文件中称为“浓度”）的指南。它还描述了各种测量方法的局限性，并描述了评估和不确定性考虑因素。本文件将报告所有类型颗粒的组合颗粒大小和浓度，并不旨在分离单独的固体和液体颗粒部分。当需要确定特定部分的浓度时，建议采用 ISO 8573 系列中的相关标准方法。注 1 本文件中描述的测试方法适用于确定 ISO 8573-1 中给出的纯度等级。注 2 按质量浓度确定的颗粒含量在 ISO 8573-8 中处理。注 3 本文件未涉及非等温条件的情况，当颗粒可能通过蒸汽凝结形成或通过蒸发损失时，应另行安排。 [外文原描述]： This document provides a method for sampling compressed air and a guide for choosing suitable measuring equipment to determine its particle size and concentration by number (to be referenced as "concentration" throughout this document). It also describes the limitations of the various measurement methods and describes the evaluation and uncertainty considerations. This document will report the particle size and concentration of all types of particle combined and does not aim to be able to segregate the separate solid and liquid particle fractions. When it is required that the concentration of a specific fraction is to be determined then recourse to the relevant standard method from the ISO 8573 series is recommended. NOTE 1 The test methods described in this document are those suitable for determining the purity classes given in ISO 8573‑1. NOTE 2 Particle content determined as concentration by mass is dealt with in ISO 8573‑8. NOTE 3 This document does not address instances where non-isothermal conditions exist, and separate arrangements should be made where particles may be formed by vapour condensation or lost through evaporation.
英文名称Compressed air — Contaminant measurement — Part 4: Particle content