标准摘要
[中文适用范围]： 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，以支持明智地选择一种或另一种校准气体混合物的制备方法。 它还描述了如何将这些方法与国家测量标准联系起来，以建立所制备的气体混合物的成分的计量可追溯性。 由于所有技术都是动态的并且依赖于流速，因此本文档通过测量设备生成的每个单独的流速来描述校准过程。 还提供了通过与已经验证的校准气体混合物进行比较来评估所生成的气体混合物的成分的方法。 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。 它还包括计算校准气体成分及其相关不确定性的必要表达式。 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到袋子或钢瓶中超出了本文件的范围。 [外文原描述]： 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.
英文名称Gas analysis — Preparation of calibration gas mixtures using dynamic methods — Part 1: General aspects