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Standard [CURRENT]

DIN EN ISO 6145-5:2011-03

Gas analysis - Preparation of calibration gas mixtures using dynamic volumetric methods - Part 5: Capillary calibration devices (ISO 6145-5:2009); German version EN ISO 6145-5:2010

German title
Gasanalyse - Herstellung von Kalibriergasgemischen mit Hilfe von dynamisch-volumetrischen Verfahren - Teil 5: Kapillardosierer (ISO 6145-5:2009); Deutsche Fassung EN ISO 6145-5:2010
Publication date
2011-03
Original language
German
Pages
19
Note
The publisher recommends this document in lieu of the withdrawn document VDI 3490 Blatt 10:1981-01 , for which no replacement is available.

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Publication date
2011-03
Original language
German
Pages
19
Note
The publisher recommends this document in lieu of the withdrawn document VDI 3490 Blatt 10:1981-01 , for which no replacement is available.
DOI
https://dx.doi.org/10.31030/1739020

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Overview

This document (EN ISO 6145-5:2010) contains the German translation of the International Standard ISO 6145-5, which has been prepared by Technical Committee ISO/TC 158 "Analysis of gases" (secretariat: NEN, Netherlands). The responsible national Committee is Working Committee NA 062-05-73 AA "Gasanalyse und Gasbeschaffenheit" ("Gas analysis and gas quality") of the Materials Testing Standards Committee (NMP).
This part of ISO 6145 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 prepare 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). 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.

Content
ICS
71.040.40
DOI
https://dx.doi.org/10.31030/1739020

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