1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationNatural gas Performance evaluation for analytical systemsBS EN ISO 10723:2012National forewordBSI, as a member of CEN, is obliged to publish BS EN ISO 10723:2012 as aBritish Stan
2、dard. However, during the development of this EuropeanStandard, the UK committee voted against its approval as a EuropeanStandard.In the published standard, the term working measurement standards (WMS)is used to refer to reference gas mixtures. In order to align the vocabularyused in describing natu
3、ral gas or gas analysis, the UK committee would havepreferred to use the term Secondary Reference Gas Mixtures, found in BS ISO7504:2001.In addition, the term generalized least squares (GLS), is used as the mainregression technique to establish unbiased estimates of response functions,replicating ro
4、bust statistics from BS EN ISO 6143:2006. This was included inan attempt to harmonize standards written by TC/158 and TC/193. Therefore,the committee believes that the reference to ordinary least squares (OLS) inclause 6.6.1 is not required, nor is it used elsewhere in the standard.This British Stan
5、dard is the UK implementation of EN ISO 10723:2012. Itsupersedes BS EN ISO 10723:2002 which is withdrawn.The UK participation in its preparation was entrusted to Technical CommitteePTI/15, Natural Gas and Gas Analysis.A list of organizations represented on this committee can be obtained onrequest to
6、 its secretary.This publication does not purport to include all the necessary provisions of acontract. Users are responsible for its correct application. The British Standards Institution 2013Published by BSI Standards Limited 2013ISBN 978 0 580 69944 3ICS 71.040.40; 75.060Compliance with a British
7、Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of the StandardsPolicy and Strategy Committee on 31 January 2013.Amendments issued since publicationAmd. No. Date Text affectedBRITISH STANDARDBS EN ISO 10723:2012National forewordBSI, as a
8、member of CEN, is obliged to publish BS EN ISO 10723:2012 as aBritish Standard. However, during the development of this EuropeanStandard, the UK committee voted against its approval as a EuropeanStandard.In the published standard, the term working measurement standards (WMS)is used to refer to refer
9、ence gas mixtures. In order to align the vocabularyused in describing natural gas or gas analysis, the UK committee would havepreferred to use the term Secondary Reference Gas Mixtures, found in BS ISO7504:2001.In addition, the term generalized least squares (GLS), is used as the mainregression tech
10、nique to establish unbiased estimates of response functions,replicating robust statistics from BS EN ISO 6143:2006. This was included inan attempt to harmonize standards written by TC/158 and TC/193. Therefore,the committee believes that the reference to ordinary least squares (OLS) inclause 6.6.1 i
11、s not required, nor is it used elsewhere in the standard.This British Standard is the UK implementation of EN ISO 10723:2012. Itsupersedes BS EN ISO 10723:2002 which is withdrawn.The UK participation in its preparation was entrusted to Technical CommitteePTI/15, Natural Gas and Gas Analysis.A list o
12、f organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisions of acontract. Users are responsible for its correct application. The British Standards Institution 2013Published by BSI Standards Limited
13、 2013ISBN 978 0 580 69944 3ICS 71.040.40; 75.060Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of the StandardsPolicy and Strategy Committee on 31 January 2013.Amendments issued since publicationAmd. No. Date Te
14、xt affectedBRITISH STANDARDBS EN ISO 10723:2012National forewordBSI, as a member of CEN, is obliged to publish BS EN ISO 10723:2012 as aBritish Standard. However, during the development of this EuropeanStandard, the UK committee voted against its approval as a EuropeanStandard.In the published stand
15、ard, the term working measurement standards (WMS)is used to refer to reference gas mixtures. In order to align the vocabularyused in describing natural gas or gas analysis, the UK committee would havepreferred to use the term Secondary Reference Gas Mixtures, found in BS ISO7504:2001.In addition, th
16、e term generalized least squares (GLS), is used as the mainregression technique to establish unbiased estimates of response functions,replicating robust statistics from BS EN ISO 6143:2006. This was included inan attempt to harmonize standards written by TC/158 and TC/193. Therefore,the committee be
17、lieves that the reference to ordinary least squares (OLS) inclause 6.6.1 is not required, nor is it used elsewhere in the standard.This British Standard is the UK implementation of EN ISO 10723:2012. Itsupersedes BS EN ISO 10723:2002 which is withdrawn.The UK participation in its preparation was ent
18、rusted to Technical CommitteePTI/15, Natural Gas and Gas Analysis.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisions of acontract. Users are responsible for its correct application
19、. The British Standards Institution 2013Published by BSI Standards Limited 2013ISBN 978 0 580 69944 3ICS 71.040.40; 75.060Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of the StandardsPolicy and Strategy Commit
20、tee on 31 January 2013.Amendments issued since publicationAmd. No. Date Text affectedBRITISH STANDARDBS EN ISO 10723:2012This publication does not purport to include all the necessary provisions of aPublished by BSI Standards Limited 2013Amendments/corrigenda issued since publicationThis British Sta
21、ndard was published under the authority of the Standards Policy and Strategy Committee on 31 May 2013.Date Text affectedEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 10723 December 2012 ICS 75.060 Supersedes EN ISO 10723:2002English Version Natural gas - Performance evaluation for analyti
22、cal systems (ISO 10723:2012) Gaz naturel - valuation des performances des systmes danalyse (ISO 10723:2012) Erdgas - Bewertung der Leistungsfhigkeit von Analysensystemen (ISO 10723:2012) This European Standard was approved by CEN on 30 November 2012. CEN members are bound to comply with the CEN/CENE
23、LEC 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-CENELEC Management Centre o
24、r 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-CENELEC Management Centre has the same status as the off
25、icial versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands
26、, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN All rights of exploitatio
27、n in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 10723:2012: EBS EN ISO 10723:2012EN ISO 10723:2012 (E) 2 Contents Page Foreword . 3 BS EN ISO 10723:2012EN ISO 10723:2012 (E) 3 Foreword This document (EN ISO 10723:2012) has been prepared by Technical Commit
28、tee ISO/TC 193 “Natural gas“. 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 June 2013, and conflicting national standards shall be withdrawn at the latest by June 2013. Attention is drawn to the
29、 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. This document supersedes EN ISO 10723:2002. According to the CEN/CENELEC Internal Regulations, the national sta
30、ndards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
31、Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 10723:2012 has been approved by CEN as a EN ISO 10723:2012 without any modification. BS EN ISO 10723:2012ISO 10723:2012
32、(E) ISO 2012 All rights reserved iiiContents PageIntroduction v1 Scope . 12 Normative references 23 Terms and definitions . 24 Symbols 35 Principle 46 General procedure 56.1 Analytical requirements 56.2 Response function types . 66.3 Calibration gas reference data . 76.4 Working measurement standard
33、s (WMS) . 86.5 Experimental design 96.6 Calculation procedures . 117 Interpretation .167.1 General considerations .167.2 Pre-defined performance specification 167.3 Determination of the analytical range of the instrument .167.4 Criteria for selection of hypothetical compositions .17Annex A (informat
34、ive) Example of application using chromatography 18Annex B (informative) Explanation of approach used for instrument benchmarking .30Bibliography .32BS EN ISO 10723:2012ISO 10723:2012(E) ISO 2012 All rights reserved iiiContents PageIntroduction v1 Scope . 12 Normative references 23 Terms and definit
35、ions . 24 Symbols 35 Principle 46 General procedure 56.1 Analytical requirements 56.2 Response function types . 66.3 Calibration gas reference data . 76.4 Working measurement standards (WMS) . 86.5 Experimental design 96.6 Calculation procedures . 117 Interpretation .167.1 General considerations .16
36、7.2 Pre-defined performance specification 167.3 Determination of the analytical range of the instrument .167.4 Criteria for selection of hypothetical compositions .17Annex A (informative) Example of application using chromatography 18Annex B (informative) Explanation of approach used for instrument
37、benchmarking .30Bibliography .32BS EN ISO 10723:2012ISO 10723:2012(E)IntroductionThis International Standard describes a method for evaluating the performance of analytical systems intended for the analysis of natural gas. Natural gas is assumed to consist predominantly of methane, with other satura
38、ted hydrocarbons and non-combustible gases.Performance evaluation makes no assumption about equipment for and/or methodology of analysis but gives test methods which can be applied to the chosen analytical system, including the method, equipment and sample handling.This International Standard contai
39、ns an informative annex (Annex A) that shows the application for an on-line gas chromatographic system which, as described, is assumed to have a response/concentration relationship for all components that is represented by a straight line through the origin. This International Standard contains an a
40、dditional informative annex (Annex B) that gives a rationale for the approach used for instrument benchmarking. ISO 2012 All rights reserved vBS EN ISO 10723:2012Natural gas Performance evaluation for analytical systems1 Scope1.1 This International Standard specifies a method of determining whether
41、an analytical system for natural gas analysis is fit for purpose. It can be used eithera) to determine a range of gas compositions to which the method can be applied, using a specified calibration gas, while satisfying previously defined criteria for the maximum errors and uncertainties on the compo
42、sition or property or both, orb) to evaluate the range of errors and uncertainties on the composition or property (calculable from composition) or both when analysing gases within a defined range of composition, using a specified calibration gas.1.2 It is assumed thata) for evaluations of the first
43、type above, the analytical requirement has been clearly and unambiguously defined, in terms of the range of acceptable uncertainty on the composition, and, where appropriate, the uncertainty in physical properties calculated from these measurements,b) for applications of the second type above, the a
44、nalytical requirement has been clearly and unambiguously defined, in terms of the range of composition to be measured and, where appropriate, the range of properties which may be calculated from these measurements,c) the analytical and calibration procedures have been fully described, andd) the anal
45、ytical system is intended to be applied to gases having compositions which vary over ranges normally found in gas transmission and distribution systems.1.3 If the performance evaluation shows the system to be unsatisfactory in terms of the uncertainty on the component amount fraction or property, or
46、 shows limitations in the ranges of composition or property values measurable within the required uncertainty, then it is intended that the operating parameters, includinga) the analytical requirement,b) the analytical procedure,c) the choice of equipment,d) the choice of calibration gas mixture, an
47、de) the calculation procedure,be reviewed to assess where improvements can be obtained. Of these parameters, the choice of the calibration gas composition is likely to have the most significant influence.1.4 This International Standard is applicable to analytical systems which measure individual com
48、ponent amount fractions. For an application such as calorific value determination, the method will be typically gas chromatography, set up, as a minimum, for the measurement of nitrogen, carbon dioxide, individual hydrocarbons from C1to C5and a composite measurement representing all higher hydrocarb
49、ons of carbon number 6 and above. This allows for the calculation of calorific value and similar properties with acceptable accuracy. In addition, components such as H2S can be measured individually by specific measurement methods to which this evaluation approach can also be applied.INTERNATIONAL STANDARD ISO 10723:2012(E) ISO 2012 All rights reserved 1BS EN ISO 10723:2012Natural gas Performance evaluation for analytical systems1 Scope1.1 This International Standard specifies a method of determining whet
