1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationNatural gas Performance evaluation for analytical systemsBS EN ISO 10723:2012Copyright European Committee for Standardization Provided by IHS under license with CENNot for Resale
2、No reproduction or networking permitted without license from IHS-,-,-National 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.
3、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 natural gas or gas analysis, the UK committee would havepreferred to use the term Secondary Reference Gas Mixtures, found in BS ISO750
4、4:2001.In addition, the 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. Ther
5、efore,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 Standard is the UK implementation of EN ISO 10723:2012. Itsupersedes BS EN ISO 10723:2002 which is withdrawn.The UK participation in i
6、ts 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 its secretary.This publication does not purport to include all the necessary provisions of acontract. Users are responsible for i
7、ts 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 Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of the StandardsPoli
8、cy and Strategy Committee on 31 January 2013.Amendments issued since publicationAmd. No. Date Text 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 EuropeanSt
9、andard, 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 natural gas or gas analysis, the UK committee would havepref
10、erred 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 robust statistics from BS EN ISO 6143:2006. This was inclu
11、ded 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 Standard is the UK implementation of EN ISO 10723:2012. Itsu
12、persedes 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 its secretary.This publication does not purport to incl
13、ude 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 Standard cannot confer immunity fromlegal obligations.Th
14、is 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 member of CEN, is obliged to publish BS EN ISO 10723:201
15、2 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 reference gas mixtures. In order to align the vocabularyused
16、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 technique to establish unbiased estimates of response functi
17、ons,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 is not required, nor is it used elsewhere in the standard
18、.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 of organizations represented on this committee can be obt
19、ained 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 2013ISBN 978 0 580 69944 3ICS 71.040.40; 75.060Complian
20、ce 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 Text affectedBRITISH STANDARDBS EN ISO 10723:2012This publ
21、ication does not purport to include all the necessary provisions of aPublished by BSI Standards Limited 2013Amendments/corrigenda issued since publicationThis British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 May 2013.Date Text affectedCopyright
22、European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 10723 December 2012 ICS 75.060 Supersedes EN ISO 10723:2002English Version Natural
23、gas - Performance evaluation for analytical 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 membe
24、rs 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 applicatio
25、n to the CEN-CENELEC 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-CENELEC Manageme
26、nt Centre has the same status as the official 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, L
27、ithuania, Luxembourg, Malta, Netherlands, 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 Bru
28、ssels 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 10723:2012: EBS EN ISO 10723:2012Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking perm
29、itted without license from IHS-,-,-EN ISO 10723:2012 (E) 2 Contents Page Foreword . 3 BS EN ISO 10723:2012Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-EN ISO 10723:2012 (E) 3
30、Foreword This document (EN ISO 10723:2012) has been prepared by Technical Committee 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 st
31、andards shall be withdrawn at the latest by June 2013. 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. This document supersedes EN ISO
32、 10723:2002. According to the CEN/CENELEC Internal Regulations, the national standards 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
33、, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, 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
34、a EN ISO 10723:2012 without any modification. BS EN ISO 10723:2012Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-ISO 10723:2012(E) ISO 2012 All rights reserved iiiContents PageI
35、ntroduction 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 standards (WMS) . 86.5 Experimental design 96.6 Calculatio
36、n 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 (informative) Example of application using chromatography 1
37、8Annex B (informative) Explanation of approach used for instrument benchmarking .30Bibliography .32BS EN ISO 10723:2012Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-ISO 10723:2
38、012(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 stand
39、ards (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 (infor
40、mative) Example of application using chromatography 18Annex B (informative) Explanation of approach used for instrument benchmarking .30Bibliography .32BS EN ISO 10723:2012ISO 10723:2012(E)IntroductionThis International Standard describes a method for evaluating the performance of analytical systems
41、 intended for the analysis of natural gas. Natural gas is assumed to consist predominantly of methane, with other saturated 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
42、 to the chosen analytical system, including the method, equipment and sample handling.This International Standard contains 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
43、 for all components that is represented by a straight line through the origin. This International Standard contains an additional informative annex (Annex B) that gives a rationale for the approach used for instrument benchmarking. ISO 2012 All rights reserved vBS EN ISO 10723:2012Copyright European
44、 Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Natural gas Performance evaluation for analytical systems1 Scope1.1 This International Standard specifies a method of determining whether an analyti
45、cal 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 composition or
46、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 type above
47、, 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 analytical
48、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 analytical sys
49、tem 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 shows limitations in
