BS EN ISO 6145-1:2008

BS EN ISO 6145-1:2008 Gas analysis. Preparation of calibration gas mixtures using dynamic volumetric methods. Methods of calibration

BS EN ISO 6145-1 specifies the calibration methods involved in the preparation of gas mixtures by dynamic volumetric techniques. It also gives a brief presentation of a non-exhaustive list of examples of dynamic volumetric techniques. These techniques are described in more detail in other parts of ISO 6145

Contents of BS EN ISO 6145-1

Introduction

Scope

Normative references

Terms and definitions

Calibration methods

General

Description of primary or potentially primary measuring devices

Measurements on the final mixture

Techniques for preparation of gas mixtures calibrated by the methods described in Clause 4

General

Volumetric pumps

Continuous injection

Capillary

Critical orifices

Thermal mass flow controllers

Diffusion

Saturation

Permeation

Volume measurement by weighing the water content

Description of secondary devices which need calibration against primary

devices

Bibliography