EN ISO 6145-1:2008
(Main)Gas analysis - Preparation of calibration gas mixtures using dynamic volumetric methods - Part 1: Methods of calibration (ISO 6145-1:2003)
Gas analysis - Preparation of calibration gas mixtures using dynamic volumetric methods - Part 1: Methods of calibration (ISO 6145-1:2003)
ISO 6145-1:2003 specifies the calibration methods involved in the preparation of gas mixtures by dynamic volumetric techniques. It also gives a brief presentation of a non-exhaustive list of examples of dynamic volumetric techniques which are described in more detail in other parts of ISO 6145.
Gasanalyse - Herstellung von Kalibriergasgemischen mit Hilfe von dynamisch-volumetrischen Verfahren - Teil 1: Kalibrierverfahren (ISO 6145-1:2003)
Dieser Teil der ISO 6145 legt die in die Herstellung von Kalibriergasgemischen mit Hilfe von dynamischvolumetrischen
Verfahren eingebundenen Kalibrierverfahren fest. Außerdem werden Beispiele für dynamischvolumetrische
Verfahren in Form einer keinen Anspruch auf Vollständigkeit erhebenden Liste kurz vorgestellt,
die in anderen Teilen der ISO 6145 detaillierter beschrieben sind.
Analyse des gaz - Préparation des mélanges de gaz pour étalonnage à l'aide de méthodes volumétriques dynamiques - Partie 1: Méthodes d'étalonnage (ISO 6145-1:2003)
L'ISO 6145-1:2003 spécifie les méthodes d'étalonnage impliquées dans la préparation des mélanges de gaz par des techniques volumétriques dynamiques. Elle présente également brièvement une liste non exhaustive d'exemples de techniques volumétriques dynamiques décrites plus en détails dans d'autres parties de l'ISO 6145.
Analiza plinov - Priprava kalibracijske plinske zmesi z uporabo dinamičnih volumetričnih metod - 1. del: Kalibracijske metode (ISO 6145-1:2003)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-oktober-2008
$QDOL]DSOLQRY3ULSUDYDNDOLEUDFLMVNHSOLQVNH]PHVL]XSRUDERGLQDPLþQLK
YROXPHWULþQLKPHWRGGHO .DOLEUDFLMVNHPHWRGH ,62
Gas analysis - Preparation of calibration gas mixtures using dynamic volumetric methods
- Part 1: Methods of calibration (ISO 6145-1:2003)
Gasanalyse - Herstellung von Kalibriergasgemischen mit Hilfe von dynamisch-
volumetrischen Verfahren - Teil 1: Kalibrierverfahren (ISO 6145-1:2003)
Analyse des gaz - Préparation des mélanges de gaz pour étalonnage à l'aide de
méthodes volumétriques dynamiques - Partie 1: Méthodes d'étalonnage (ISO 6145-
1:2003)
Ta slovenski standard je istoveten z: EN ISO 6145-1:2008
ICS:
71.040.40 Kemijska analiza Chemical analysis
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN ISO 6145-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
August 2008
ICS 71.040.40
English Version
Gas analysis - Preparation of calibration gas mixtures using
dynamic volumetric methods - Part 1: Methods of calibration
(ISO 6145-1:2003)
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 1:
dynamiques - Partie 1: Méthodes d'étalonnage (ISO 6145- Kalibrierverfahren (ISO 6145-1:2003)
1:2003)
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 6145-1:2008: E
worldwide for CEN national Members.
Contents Page
Foreword.3
Foreword
The text of ISO 6145-1:2003 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 6145-1:2008 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 6145-1:2003 has been approved by CEN as a EN ISO 6145-1:2008 without any modification.
INTERNATIONAL ISO
STANDARD 6145-1
Second edition
2003-11-15
Gas analysis — Preparation of calibration
gas mixtures using dynamic volumetric
methods —
Part 1:
Methods of calibration
Analyse des gaz — Préparation des mélanges de gaz pour étalonnage
à l'aide de méthodes volumétriques dynamiques —
Partie 1: Méthodes d'étalonnage
Reference number
ISO 6145-1:2003(E)
©
ISO 2003
ISO 6145-1:2003(E)
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ii © ISO 2003 — All rights reserved
ISO 6145-1:2003(E)
Contents Page
Foreword. iv
Introduction . v
1 Scope. 1
2 Normative references . 1
3 Terms and definitions. 1
4 Calibration methods . 2
4.1 General. 2
4.2 Description of primary or potentially primary measuring devices . 4
4.3 Measurements on the final mixture. 12
5 Techniques for preparation of gas mixtures calibrated by the methods described in
Clause 4. 13
5.1 General. 13
[3]
5.2 Volumetric pumps (see ISO 6145-2 ) . 15
[4]
5.3 Continuous injection (see ISO 6145-4 ). 15
[5]
5.4 Capillary (see ISO 6145-5 ). 15
[6]
5.5 Critical orifices (see ISO 6145-6 ). 16
[7]
5.6 Thermal mass flow controllers (see ISO 6145-7 ). 16
[8]
5.7 Diffusion (see ISO 6145-8 ) . 16
[9]
5.8 Saturation (see ISO 6145-9 ). 17
[10]
5.9 Permeation (see ISO 6145-10 ). 17
Annex A (normative) Volume measurement by weighing the water content. 19
Annex B (informative) Description of secondary devices which need calibration against primary
devices . 23
Bibliography . 32
ISO 6145-1:2003(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 6145-1 was prepared by Technical Committee ISO/TC 158, Analysis of gases.
This second edition cancels and replaces the first edition (ISO 6145-1:1986), in which the estimated
uncertainties in the calibration methods and techniques have now been combined in a square-root sum-of-
squares manner to form the relative combined standard uncertainty. In comparison with the previous edition
the periodic injection has been deleted (limited application).
ISO 6145 consists of the following parts, under the general title Gas analysis — Preparation of calibration gas
mixtures using dynamic volumetric methods:
Part 1: Methods of calibration
— Part 2: Volumetric pumps
— Part 4: Continuous injection methods
— Part 5: Capillary calibration devices
— Part 6: Critical orifices
— Part 7: Thermal mass-flow controllers
— Part 9: Saturation method
— Part 10: Permeation method
Diffusion will be the subject of a future Part 8 to ISO 6145. Part 3 to ISO 6145, entitled Periodic injections into
a flowing gas, has been withdrawn.
iv © ISO 2003 — All rights reserved
ISO 6145-1:2003(E)
Introduction
This part of ISO 6145 is one of a series of standards which describes the various dynamic volumetric methods
used for the preparation of calibration gas mixtures.
In dynamic volumetric methods a gas, A, is introduced at volume or mass flow rate q into a constant flow rate
A
q of a complementary gas B. Gas A can be either a pure calibration component, i, or a mixture of i in A.
B
The volume fraction, ϕ of i in the final calibration gas mixture is given in the following equation:
i,M
q
A
ϕϕ=
ii,M ,A
qq+
AB
where ϕ is the volume or mass fraction of component, i, in the pre-mixed gas A, and is already known from
i,A
its method of preparation. It is assumed that in this equation, ϕ , the concentration of component, i, in gas B,
i,B
is zero.
The introduction of gas A can be continuous (e.g. permeation tube) or pseudo-continuous (e.g. volumetric
pump). A mixing chamber should be inserted in the system before the analyser and is particularly essential in
the case of pseudo-continuous introduction. The flow rate of component A is measured either directly in terms
of volume or mass, or indirectly by measuring the variation of a physical property.
The dynamic volumetric preparation techniques produce a continuous flow rate of calibration gas mixtures into
the analyser but do not generally allow the build-up of a reserve by storage under pressure.
The main techniques used for the preparation of the mixtures are:
a) volumetric pumps;
b) continuous injection;
c) capillary;
d) critical orifices;
e) thermal mass-flow controllers;
f) diffusion;
g) saturation;
h) permeation;
i) electrochemical generation.
In all cases, and most particularly if very dilute mixtures are concerned, the materials used for the apparatus
are chosen as a function of their resistance to corrosion and low absorption capacity (usually glass, PTFE or
stainless
...
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