ISO 8573-4:2019 压缩空气 污染物测量 第4部分：颗粒含量

标准编号：ISO 8573-4:2019

中文名称：压缩空气 污染物测量 第4部分：颗粒含量

英文名称：Compressed air — Contaminant measurement — Part 4: Particle content

发布日期：2019-02

标准范围

本文件提供了压缩空气取样的方法，以及选择合适测量设备的指南，以通过数字确定其颗粒大小和浓度（在本文件中被称为“浓度”）。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度考虑因素。本文件将报告组合的所有类型颗粒的粒度和浓度，并不旨在分离单独的固体和液体颗粒部分。当需要测定特定组分的浓度时，建议采用ISO 8573系列中的相关标准方法。注1:本文件中描述的试验方法适用于确定ISO 8573-1中给出的纯度等级。注2:ISO 8573-8中规定了按质量浓度测定的颗粒含量。注3:本文件不涉及存在非等温条件的情况，如果颗粒可能通过蒸汽冷凝形成或蒸发损失，则应单独安排。

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.

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