BS-EN-ISO-6145-4-2008.pdf
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1、BRITISH STANDARD Gas analysis Preparation of calibration gas mixtures using dynamic volumetric methods Part 4: Continuous syringe injection method ICS 71.040.40 ? BS EN ISO 6145-4:2008 Licensed CopyChinese University of Hong Kong, 11/04/2009 08:27, Uncontrolled Copy, (c) BSI This British Standard wa
2、s published under the authority of the Standards Policy and Strategy Committee on 23 March 2005 ISBN 978 0 580 60359 4 National foreword This British Standard is the UK implementation of EN ISO 6145-4:2008. It is identical with ISO 6145-4:2004. It supersedes BS ISO 6145-4:2004 which is withdrawn. Th
3、e UK participation in its preparation was entrusted to Technical Committee PTI/15, Natural gas and gas analysis. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract.
4、 Users are responsible for its correct application. Compliance with a British Standard cannot confer immunity from legal obligations. Amendments/corrigenda issued since publication DateComments This corrigendum renumbers BS ISO 6145-4:2004 as BS EN ISO 6145-4:2008 BS EN ISO 6145-4:2008 28 February 2
5、009 BSI 2009 Licensed CopyChinese University of Hong Kong, 11/04/2009 08:27, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 6145-4 August 2008 ICS 71.040.40 English Version Gas analysis - Preparation of calibration gas mixtures using dynamic volumetric methods -
6、Part 4: Continuous syringe injection method (ISO 6145-4:2004) Analyse des gaz - Prparation des mlanges de gaz pour talonnage laide de mthodes volumtriques dynamiques - Partie 4: Mthode continue par seringue dinjection (ISO 6145-4:2004) Gasanalyse - Herstellung von Kalibriergasgemischen mit Hilfe von
7、 dynamisch-volumetrischen Verfahren - Teil 4: Kontinuierliches Spritzen-Injektionsverfahren (ISO 6145- 4:2004) 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
8、 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,
9、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, Cyp
10、rus, 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 C
11、OMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2008 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 6145-4:2008: E Licensed CopyChinese University of Hong Kong
12、, 11/04/2009 08:27, Uncontrolled Copy, (c) BSI Foreword The text of ISO 6145-4:2004 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 6145-4:2008 by Technical Committee CEN/SS N21 “Gas
13、eous 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
14、 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 natio
15、nal 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, P
16、oland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 6145-4:2004 has been approved by CEN as a EN ISO 6145-4:2008 without any modification. BS EN ISO 6145-4:2008 Licensed CopyChinese University of Hong Kong, 11/04/2009 08
17、:27, Uncontrolled Copy, (c) BSI iii Contents Page 1Scope 1 2Normative references 1 3Principle 1 4Application to preparation of gas mixtures 2 4.1Description of the experimental procedure 2 4.2Area of validity . 3 4.3Operating conditions 4 5Expression of results 4 5.1Volume fraction 4 5.2Sources of u
18、ncertainty . 4 5.3Uncertainty of volume fraction 5 Annex A (informative) Pre-mixed gases for preparation of mixtures of high dilution . 6 Annex B (informative) Example of apparatus for preparation of calibration gas mixtures . 7 Annex C (informative) Practical hints . 9 Annex D (informative) Example
19、 of the determination of the uncertainty in the concentration of a calibration gas mixture prepared by the continuous injection method 12 Bibliography . 15 BS EN ISO 61454:2008 Licensed CopyChinese University of Hong Kong, 11/04/2009 08:27, Uncontrolled Copy, (c) BSI blank Licensed CopyChinese Unive
20、rsity of Hong Kong, 11/04/2009 08:27, Uncontrolled Copy, (c) BSI v Introduction This part of ISO 6145 is one of a series of standards dealing with various dynamic volumetric methods used for the preparation of calibration gas mixtures. BS EN ISO 61454:2008 Licensed CopyChinese University of Hong Kon
21、g, 11/04/2009 08:27, Uncontrolled Copy, (c) BSI blank Licensed CopyChinese University of Hong Kong, 11/04/2009 08:27, Uncontrolled Copy, (c) BSI ANRETNIITOTS LANDNADRAOSI -54164002:4)E( ISO 2004 All rights reserved 1 Gas analysis Preparation of calibration gas mixtures using dynamic volumetric metho
22、ds Part 4: Continuous syringe injection method 1Scope This part of ISO 6145 specifies a method for continuous production of calibration gas mixtures, containing two or more components, from pure gases or other gas mixtures by continuous injection of the calibration component(s) into a complementary
23、gas stream by means of a syringe. If pre-mixed gases are used instead of pure gases (see Annex A), much lower volume fractions can be obtained. The volume flow rates, from which the volume fractions are determined, can be calculated from the individual flow rates and can be independently measured by
24、 a suitable method given in ISO 6145-1. The merits of the method are that a substantial quantity of the gas mixture can be prepared on a continuous basis and that multi-component mixtures can be prepared almost as readily as binary mixtures if the appropriate number of syringes is utilized, or if th
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