ISO 16664:2004 气体分析-标准气体和混合气体的处理 指导方针

标准编号：ISO 16664:2004

中文名称：气体分析-标准气体和混合气体的处理 指导方针

英文名称：Gas analysis — Handling of calibration gases and gas mixtures — Guidelines

发布日期：2004-07

标准范围

ISO 16664:2004描述了可能影响用于校准目的的纯气体和均匀气体混合物的组成的因素。ISO 16664:2004只适用于在“使用期”内的气体或气体混合物，它特别注意校准气瓶的储存；从钢瓶中抽出校准气体；将校准气体从钢瓶转移到校准点。ISO 16664:2004还概述了评估气体混合物稳定性的方法，并考虑了证书上给出的气体成分不确定度和用户测量不确定度。

ISO 16664:2004 describes factors that may influence the composition of pure gases and homogeneous gas mixtures used for calibration purposes. ISO 16664:2004 only applies to gases or gas mixtures that are within the "utilization period", and it pays special attention to

• storage of calibration gas cylinders;
• calibration gas withdrawal from cylinders;
• transfer of calibration gas from cylinders to the point of calibration.

ISO 16664:2004 also outlines a method of assessing the stability for a gas mixture, and takes into account the gas composition uncertainty given on the certificate and the users measurement uncertainty.

标准预览图