ISO 6145-1:2019 气体分析 标定用混合气体的制备 动态容量法 第1部分：通用特性

标准编号：ISO 6145-1:2019

中文名称：气体分析 标定用混合气体的制备 动态容量法 第1部分：通用特性

英文名称：Gas analysis — Preparation of calibration gas mixtures using dynamic methods — Part 1: General aspects

发布日期：2019-09

标准范围

本文件简要概述了ISO 6145后续部分中详细描述的每种动态技术。本文件提供了基本信息，以支持在知情的情况下选择一种或另一种制备校准气体混合物的方法。它还描述了如何将这些方法与国家测量标准联系起来，以建立制备的气体混合物成分的计量溯源性。由于所有技术都是动态的，并且依赖于流量，因此本文件通过测量设备产生的每个单独流量来描述校准过程。还提供了通过与已经验证的标定气体混合物进行比较来评估生成的气体混合物成分的方法。本文件提供了气体混合物制备动态方法的使用和操作的一般要求。它还包括计算标定气体成分及其相关不确定度的必要表达式。通过这些动态方法获得的气体混合物可用于校准或控制气体分析仪。将动态制备的气体混合物储存在袋子或钢瓶中不属于本文件的范围。

This document gives a brief overview of each of the dynamic techniques which are described in detail in the subsequent parts of ISO 6145. This document provides basic information to support an informed choice for one or another method for the preparation of calibration gas mixtures. It also describes how these methods can be linked to national measurement standards to establish metrological traceability for the composition of the prepared gas mixtures.Since all techniques are dynamic and rely on flow rates, this document describes the calibration process by measurement of each individual flow rate generated by the device.Methods are also provided for assessing the composition of the generated gas mixtures by comparison with an already validated calibration gas mixture.This document provides general requirements for the use and operation of dynamic methods for gas mixture preparation. It also includes the necessary expressions for calculating the calibration gas composition and its associated uncertainty.Gas mixtures obtained by these dynamic methods can be used to calibrate or control gas analysers.The storage of dynamically prepared gas mixtures into bags or cylinders is beyond the scope of this document.

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