RO
SR ISO 6145-2:2023
Gas analysis — Preparation of calibration gas mixtures using dynamic methods — Part 2: Piston pumps
<p>ISO 6145 comprises a series of International Standards dealing with various dynamic methods used for the preparation of calibration gas mixtures. ISO 6145-2:2014 describes a method and preparation system using piston pumps. The mixture composition and its associated uncertainty are based on calibration of the piston pumps by dimensional measurements.</p> <p>The calibration gas mixtures prepared using this method consist of two or more components, prepared from pure gases or other gas mixtures using gas-mixing pumps. Such gas-mixing pumps contain at least two piston pumps, each driven with a defined ratio of strokes, and appropriate accessories for gas feeding and mixture homogenization.</p> <p>ISO 6145-2:2014 is applicable only to mixtures of gaseous or totally vaporized components including corrosive gases, as long as these components neither react with each other nor with the wetted surfaces of the mixing pump. The use of gas mixtures as parent gases is covered as well. Multi-component gas mixtures and multi-step dilution procedures are included in this International Standard as
Status :
Valid
Approval date : 5/31/2023
Number of pages : 32
ICS : 71.040.40 Chemical analysis
Technical Committee : 357 - Natural gas
- Replaces SR ISO 6145-2:2008
- Normative reference SR ISO 7504:2016
- Normative reference SR EN ISO 14912:2007
- Normative reference SR GHID ISO/CEI 98-3:2010
- Normative reference SR GHID ISO/CEI 99:2010