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
