International Standard
ISO 6145-5:2009
Gas analysis — Preparation of calibration gas mixtures using dynamic volumetric methods — Part 5: Capillary calibration devices
Reference number
ISO 6145-5:2009
Edition 2
2009-11
International Standard
Read sample
ISO 6145-5:2009
45470
Published (Edition 2, 2009)
This standard was last reviewed and confirmed in 2019. Therefore this version remains current.

ISO 6145-5:2009

ISO 6145-5:2009
45470
Language
Format
CHF 96
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Abstract

ISO 6145-5:2009 is one of a series of International Standards dealing with the various dynamic volumetric techniques used for the preparation of calibration gas mixtures. This part specifies a method for the continuous production of calibration gas mixtures from pure gases or gas mixtures using capillary calibration devices in single or multiple combinations (gas dividers).

Single capillary systems can be used to provide gas mixtures where the minor component is in the range of volume fractions from 10-8 to 0,5.

The relative expanded uncertainty of this technique is less than ±2 % (k = 2) relative. This application is used in industrial gas mixing panels for the production of specific gas atmospheres.

Gas dividers can be used to divide gas mixtures prepared from gases or gas mixtures into controlled proportions by volume. These devices are capable of dilutions in the range of volume fractions from 0,000 5 to 0,9 of the primary gas concentration with a relative repeatability of better than 0,5 %.

Traceability of the gas mixtures produced by a gas divider is achieved by comparison of a mixture with gas mixtures related to national or international gas standards. An example is given in Annex A.

General information

  •  : Published
     : 2009-11
    : International Standard confirmed [90.93]
  •  : 2
     : 14
  • ISO/TC 158
    71.040.40 
  • RSS updates

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