Norm

ISO/DIS 6145-5:2008 en

Gasanalyse - Bereiding van kalibratiegasmengsels met gebruik van dynamische volumetrische methoden - Deel 5: Capillaire kalibratie inrichtingen

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Over deze norm

Status Ontwerp
Aantal pagina's 15
Commissie Gasanalyse
Gepubliceerd op 27-05-2008
Taal Engels
This part of ISO 6145 is one of a series of standards dealing with the various dynamic volumetric techniques used for the preparation of calibration gas mixtures. This part of ISO 6145 specifies a technique for the continuous production of calibration gas mixtures from pure gases or gas mixtures using capillary 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 from (10-8 to 0,5) volume fraction. The relative repeatability 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 (0,000 5 to 0,9) volume fraction of the primary gas concentration with a relative repeatability of better than ± 0,5 % relative value. Traceability of the gas mixtures produced by a gas divider can be achieved by comparison of a mixture with gas mixtures related to national or international gas standards. An example is given in annex A.

Details

ICS-code 71.040.40
Nederlandse titel Gasanalyse - Bereiding van kalibratiegasmengsels met gebruik van dynamische volumetrische methoden - Deel 5: Capillaire kalibratie inrichtingen
Engelse titel Gas analysis - Preparation of calibration gas mixtures using dynamic volumetric methods - Part 5: Capillary calibration devices
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