《BS-EN-ISO-14956-2002.pdf》由会员分享，可在线阅读，更多相关《BS-EN-ISO-14956-2002.pdf（38页珍藏版）》请在三一文库上搜索。
1、BRITISH STANDARD BS EN ISO 14956:2002 Incorporating Corrigendum No. 1 Air quality Evaluation of the suitability of a measurement procedure by comparison with a required measurement uncertainty The European Standard EN ISO 14956:2002 has the status of a British Standard ICS 13.040.01 ? Licensed Copy:
2、 sheffieldun sheffieldun, na, Sat Nov 18 01:56:59 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN ISO 14956:2002 This British Standard, having been prepared under the direction of the Health and Environment Sector Policy and Strategy Committee, was published under the authority of the Standards Pol
3、icy and Strategy Committee on 12 September 2002 BSI 17 October 2002 ISBN 0 580 40348 3 National foreword This British Standard is the official English language version of EN ISO 14956:2002. It is identical with ISO 14956:2002. The UK participation in its preparation was entrusted by Technical Commit
4、tee EH/2, Air Quality, to Subcommittee EH/2/4, General Aspects, which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referre
5、d to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisio
6、ns of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or
7、 proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN ISO title page, the EN ISO foreword page, the ISO title page, pages
8、ii to v, a blank page, pages 1 to 26, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments 14186 Corrigendum No. 1 17 October 2002Correction to EN ISO foreword p
9、age Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 01:56:59 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 14956 August 2002 ICS 13.040.01 English version Air quality - Evaluation of the suitability of a measurement procedure by comparison
10、 with a required measurement uncertainty (ISO 14956:2002) Qualit de lair - Evaluation de laptitude lemploi dune procdure de mesurage par comparaison avec une incertitude de mesure requise (ISO 14956:2002) Luftbeschaffenheit - Beurteilung der Eignung eines Messverfahrens durch Vergleich mit einer gef
11、orderten Messunsicherheit (ISO 14956:2002) This European Standard was approved by CEN on 28 July 2002. 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.
12、Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the 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 und
13、er the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxem
14、bourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2002 CENAll rights of exploitation in any form and b
15、y any means reserved worldwide for CEN national Members. Ref. No. EN ISO 14956:2002 E Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 01:56:59 GMT+00:00 2006, Uncontrolled Copy, (c) BSI CORRECTED 2002-10-02 Foreword This document (EN ISO 14956:2002) has been prepared by Technical Committee IS
16、O /TC 146 “Air quality“ in collaboration with Technical Committee CEN/TC 264 “Air quality“, the secretariat of which is held by DIN. 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 2003,
17、and conflicting national standards shall be withdrawn at the latest by February 2003. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland,
18、France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 14956:2002 has been approved by CEN as EN ISO 14956:2002 without any modifications. EN ISO 14956:2002 Licensed Cop
19、y: sheffieldun sheffieldun, na, Sat Nov 18 01:56:59 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Reference number ISO 14956:2002(E) INTERNATIONAL STANDARD ISO 14956 First edition 2002-08-15 Air quality Evaluation of the suitability of a measurement procedure by comparison with a required measurement u
20、ncertainty Qualit de lair valuation de laptitude lemploi dune procdure de mesurage par comparaison avec une incertitude de mesure requise EN ISO 14956:2002 Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 01:56:59 GMT+00:00 2006, Uncontrolled Copy, (c) BSI IS:65941 O2002(E) DPlcsid Fremia ihTs
21、 PDF file mac ytnoaie nmt deddebyfepca.se In ccaocnadrw eith Aebods licsneilop gnic,y this file mairp eb yntiv ro deewb detu slahl ton ide ebtlnu desse tt ehyfepacse whice era hml era deddebicsnede to i dnanstlaled t noeh comtupfrep reomrign tide ehti.gn In wodnlidaogn this file, trapies ccatpe tier
22、eht nsnopser ehibility fo ton infriignA gnebods licnesilop gnic.y I ehTStneC Oarl Secrteiraat cacepts l oniibality in this .aera Ai ebods a tredamafo kr Aebod SystemI sncotaropr.de teDails fo ts ehoftwaorp ercudts ust deo crtaet ehis PDF file ceb na fi dnuon tlareneG eh Info leratit evo tf ehile; tP
23、 ehD-Fcrtaeiarap nomtesre were tpoimizf deoirp rnti.gn Evyre casah er t neebakt neo snet eruhat tf ehile is suitlbaf eosu rI yb eSO memidob rebse. In the lnuikletneve y ttah a lborpem leratign to it is fnuo,d lpsaee inform ttneC ehlar Secrteiraat at tsserdda eh igleb nevwo. ISO 2002 Athgir lls serev
24、r.de selnUs towrehise specfi,dei trap on fo this ilbupctanoi may cudorper ebtu ro deziliyna ni de fomr yb ro nam y,snae lecetrinoc m roecinahcal, inclidutohp gnocpoiym dna gnicrfoilm, wittuoh repmissii non writif gnrom ietreh ISa Ot tserdda ehs lebwo I roSOs membre ydob in teh ctnuoo yrf ttseuqer eh
25、e.r ISO cirypothg fofice saCe tsopale 65 eneG 1121-HC 02 av leT. 4 + 10 947 22 1 11 xaF0 947 22 14 + 9 74 E-mail coirypthgiso.c h Web ww.wiso.ch Printi denS witlrez dna ii I SO 2002 Allr ithgsr esedevr ii EN ISO 14956:2002 Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 01:56:59 GMT+00:00 200
26、6, Uncontrolled Copy, (c) BSI IS:65941 O2002(E) I SO 2002 All irthgs ersedevr iii Contents Page Foreword iv Introduction. v 1 Scope 1 2 Normative reference 1 3 Terms and definitions. 1 4 Symbols and abbreviated terms 2 5 Principle . 4 6 Requirements 7 6.1 Methods and materials . 7 6.2 Performance ch
27、aracteristics 7 6.3 Required measurement quality 7 7 Required performance related to dynamic conditions 7 7.1 General. 7 7.2 Response time. 7 8 Required performance related to stationary conditions. 8 8.1 Analytical function, model function and variance function8 8.2 Identification of sources of unc
28、ertainty 9 8.3 Assignment of sources of uncertainty to performance characteristics 9 8.4 Definition and quantification of conditions of operation of the measurement system. 10 8.5 Quantification of the impact of selected performance characteristics as partial standard uncertainties 11 8.6 Estimation
29、 of the combined standard uncertainty 14 8.7 Estimation of the expanded uncertainty. 14 8.8 Evaluation of compliance with the required measurement quality . 14 9 Field verification 14 10 Report. 15 Annex A (informative) Default ranges of chemical interferents. 16 Annex B (normative) Coverage factors
30、 derived from effective degrees of freedom. 18 Annex C (informative) Example of an assessment of compliance of UV fluorescence method for SO2 with requirements on ambient air quality. 19 Annex D (informative) Examples of field verification programmes. 24 Bibliography 26 iii EN ISO 14956:2002 License
31、d Copy: sheffieldun sheffieldun, na, Sat Nov 18 01:56:59 GMT+00:00 2006, Uncontrolled Copy, (c) BSI IS:65941 O2002(E) vi I SO 2002 All irthgs ersedevr Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The wor
32、k 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-governme
33、ntal, 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 3. The m
34、ain 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. A
35、ttention is drawn to the possibility that some of the elements of this International Standard may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 14956 was prepared by Technical Committee ISO/TC 146, Air quality, Subcommittee SC 4
36、, General aspects. Annex B forms a normative part of this International Standard. Annexes A, C and D are for information only. iv EN ISO 14956:2002 Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 01:56:59 GMT+00:00 2006, Uncontrolled Copy, (c) BSI IS:65941 O2002(E) I SO 2002 All irthgs ersede
37、vr v Introduction A measuring task generally includes information on the required quality of the measurement result, which may be quantified by the measurement uncertainty. The required quality may be specified, e.g. by legislation, by authorities or the parties involved. The quality of a measuremen
38、t result strongly depends on the performance of the measuring method used. This International Standard specifies the procedures to determine the measurement uncertainty of an individual measurement result, using relevant performance characteristics of the measuring method, and to verify compliance w
39、ith the requirements of the measuring task. A procedure for establishing the uncertainty of the time average of a series of single measurements will be given in a separate International Standard 3. v EN ISO 14956:2002 Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 01:56:59 GMT+00:00 2006, Un
40、controlled Copy, (c) BSI Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 01:56:59 GMT+00:00 2006, Uncontrolled Copy, (c) BSI INTENRATIONAL TSANDADR IS:65941 O2002(E) I SO 2002 All irthgs ersedevr 1 Air quality Evaluation of the suitability of a measurement procedure by comparison with a requi
41、red measurement uncertainty 1 Scope This International Standard specifies, for the field of air quality measurement procedures, the: estimation of measurement uncertainty from actual or claimed values of all important performance characteristics of a method under stationary conditions; assessment of
42、 whether or not specified values for these performance characteristics comply with the required quality of a measured value at a stated measurand value; evaluation of the applicability of the measurement method based on laboratory performance and confirmatory field test; establishment of requirement
43、s on dynamic behaviour of instruments. This International Standard is applicable to measurement procedures whose output is a defined time average. 2 Normative reference The following normative document contains provisions which, through reference in this text, constitute provisions of this Internati
44、onal Standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent edition of the normative document indi
45、cated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards. ISO 6879:1995, Air quality Performance characteristics and related concepts for air quality measuring methods 3
46、 Terms and definitions For the purposes of this International Standard, the terms and definitions given in ISO 6879 and the following apply. 3.1 dynamic condition of operation condition where the measurand value or/and the value of an influence quantity is time-dependent 3.2 performance requirement
47、requirement of the measurement, in terms of standard uncertainty and dynamic behaviour, against which the suitability of the measurement system is being assessed 1 EN ISO 14956:2002 Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 01:56:59 GMT+00:00 2006, Uncontrolled Copy, (c) BSI IS:65941 O2
48、002(E) 2 I SO 2002 All irthgs ersedevr 3.3 standard uncertainty uncertainty of the result of a measurement expressed as a standard deviation. GUM:1993, 2.3.1 3.4 stationary condition of operation condition where the measurand value and the values of all influence quantities are constant. 3.5 uncerta
49、inty parameter, associated with the result of a measurement, that characterizes the dispersion of the values that could reasonably be attributed to the measurand. VIM:1993, C.2.11 4 Symbols and abbreviated terms bj sensitivity coefficient of c for influence quantity xj at C = ctest bj, max maximum value of bj C measurand c measured value of the measurand ctest value of the measurand at which the required measurement unc