EN ISO 6145-8:2008

Gas analysis - Preparation of calibration gas mixtures using dynamic volumetric methods - Part 8: Diffusion method (ISO 6145-8:2005)

ISO 6145-8:2005 specifies a dynamic method using diffusion for the preparation of calibration gas mixtures containing component mole fractions ranging from 10-9 to 10-3. A relative expanded uncertainty of measurement, U, obtained by multiplying the relative combined standard uncertainty by a coverage factor k = 2, of not greater than ± 2 % can be achieved by using this method.
By keeping the path between the diffusion source and place of use as short as possible, the method can be applied for the generation of low-concentration calibration gases of organic components that are liquid at room temperature, with boiling points ranging from about 40 °C to 160 °C.
ISO 6145-8:2005 is applicable not only for the generation of calibration gas mixtures of a wide range of hydrocarbons at ambient and indoor air concentration levels, but also for the generation of low-concentration gas mixtures of water.

Gasanalyse - Herstellung von Kalibriergasgemischen mit Hilfe von dynamisch-volumetrischen Verfahren - Teil 8: Diffusionsverfahren (ISO 6145-8:2005)

Dieser Teil der ISO 6145 legt ein dynamisches Verfahren zur Herstellung von Kalibriergasgemischen mit
Stoffmengenanteilen der Komponenten im Bereich von 10-9 bis 10-3 fest. Mit diesem Verfahren lässt sich eine
relative erweiterte Messunsicherheit U, bestimmt durch Multiplikation der relativen kombinierten Standardunsicherheit
mit einem Überdeckungsfaktor k = 2, von 2 % oder besser erreichen.
Wird der Weg zwischen der Diffusionsquelle und der Kalibriergasaufgabe so kurz wie möglich gehalten, so
kann das Verfahren zur Erzeugung von Kalibriergasen im niedrigen Konzentrationsbereich mit organischen
Komponenten, die bei Raumtemperatur flüssig sind, mit Siedepunkten von etwa 40 ºC bis 160 ºC verwendet
werden.
Der Anwendungsbereich dieses Teils der ISO 6145 umfasst nicht nur die Herstellung von Kalibriergasgemischen
mit einer Vielzahl von Kohlenwasserstoffen auf Außenluft- und Innenraumluft-Konzentrationsniveau
sondern auch die Erzeugung von Gasgemischen mit Wasser in niedrigen Konzentrationsbereichen.

Analyse des gaz - Préparation des mélanges de gaz pour étalonnage à l'aide de méthodes volumétriques dynamiques - Partie 8: Méthode par diffusion (ISO 6145-8:2005)

L'ISO 6145-8:2005 spécifie une méthode dynamique par diffusion pour la préparation de mélanges de gaz pour étalonnage, dont la teneur en fractions molaires est comprise entre 10-9 et 10-3. En appliquant cette méthode, il est possible d'obtenir une incertitude relative élargie du mesurage, U, obtenue par multiplication de l'incertitude type relative composée par un facteur d'élargissement k = 2, de ± 2 % au maximum.
En maintenant la distance entre la source de diffusion et le lieu d'utilisation aussi courte que possible, la méthode peut être appliquée pour générer des gaz pour étalonnage à faible concentration de composants organiques liquides à température ambiante, les points d'ébullition étant compris entre 40 °C et 160 °C environ.
L'ISO 6145-8:2005 ne s'applique pas uniquement à la génération des mélanges de gaz pour étalonnage d'un large éventail d'hydrocarbures aux niveaux de concentration de l'air ambiant et d'intérieur, mais également à la génération de mélanges de gaz de faible concentration en eau.

Analiza plinov - Priprava kalibracijske plinske zmesi z uporabo dinamičnih volumetričnih metod - 8. del: Difuzijska metoda (ISO 6145-8:2005)

General Information

• Status: Published
• Publication Date: 19-Aug-2008
• ICS: 71.040.40 - Chemical analysis
• Technical Committee: CEN/TC 238 - Test gases, test pressures and categories of appliances
• Drafting Committee: CEN/TC 238 - Test gases, test pressures and categories of appliances
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 20-Aug-2008
• Due Date: 28-Sep-2009
• Completion Date: 20-Aug-2008
• Ref Project: SIST EN ISO 6145-8:2008 - Gas analysis - Preparation of calibration gas mixtures using dynamic volumetric methods - Part 8: Diffusion method (ISO 6145-8:2005)

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN ISO 6145-8:2008
01-oktober-2008
$QDOL]DSOLQRY3ULSUDYDNDOLEUDFLMVNHSOLQVNH]PHVL]XSRUDERGLQDPLþQLK
YROXPHWULþQLKPHWRGGHO'LIX]LMVNDPHWRGD,62
Gas analysis - Preparation of calibration gas mixtures using dynamic volumetric methods
- Part 8: Diffusion method (ISO 6145-8:2005)
Gasanalyse - Herstellung von Kalibriergasgemischen mit Hilfe von dynamisch-
volumetrischen Verfahren - Teil 8: Diffusionsverfahren (ISO 6145-8:2005)
Analyse des gaz - Préparation de mélanges de gaz pour étalonnage à l'aide de
méthodes volumétriques - Partie 8: Méthode par diffusion (ISO 6145-8:2005)
Ta slovenski standard je istoveten z: EN ISO 6145-8:2008
ICS:
71.040.40 Kemijska analiza Chemical analysis
SIST EN ISO 6145-8:2008 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 6145-8:2008

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SIST EN ISO 6145-8:2008
EUROPEAN STANDARD
EN ISO 6145-8
NORME EUROPÉENNE
EUROPÄISCHE NORM
August 2008
ICS 71.040.40

English Version
Gas analysis - Preparation of calibration gas mixtures using
dynamic volumetric methods - Part 8: Diffusion method (ISO
6145-8:2005)
Analyse des gaz - Préparation des mélanges de gaz pour Gasanalyse - Herstellung von Kalibriergasgemischen mit
étalonnage à l'aide de méthodes volumétriques Hilfe von dynamisch-volumetrischen Verfahren - Teil 8:
dynamiques - Partie 8: Méthode par diffusion (ISO 6145- Diffusionsverfahren (ISO 6145-8:2005)
8:2005)
This European Standard was approved by CEN on 30 July 2008.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the CEN Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the
official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2008 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 6145-8:2008: E
worldwide for CEN national Members.

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SIST EN ISO 6145-8:2008
EN ISO 6145-8:2008 (E)
Contents Page
Foreword.3

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SIST EN ISO 6145-8:2008
EN ISO 6145-8:2008 (E)
Foreword
The text of ISO 6145-8:2005 has been prepared by Technical Committee ISO/TC 158 “Analysis of gases” of
the International Organization for Standardization (ISO) and has been taken over as EN ISO 6145-8:2008 by
Technical Committee CEN/SS N21 “Gaseous fuels and combustible gas” the secretariat of which is held by
CMC.
This European Standard shall be given the status of a national standard, either by publication of an identical
text or by endorsement, at the latest by February 2009, and conflicting national standards shall be withdrawn
at the latest by February 2009.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.
Endorsement notice
The text of ISO 6145-8:2005 has been approved by CEN as a EN ISO 6145-8:2008 without any modification.

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SIST EN ISO 6145-8:2008

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SIST EN ISO 6145-8:2008


INTERNATIONAL ISO
STANDARD 6145-8
First edition
2005-02-01

Gas analys
...