1、BSI Standards PublicationBS EN 14212:2012Ambient air Standardmethod for the measurementof the concentration ofsulphur dioxide by ultravioletfluorescenceBS EN 14212:2012Incorporating corrigendum April 2014BS EN 14212:2012 BRITISH STANDARDNational forewordThis British Standard is the UK implementation
2、 of EN 14212:2012, incorporating corrigendum April 2014. It supersedes BS EN 14212:2005 which is withdrawn.The start and finish of text introduced or altered by corrigendum is indicated in the text by tags. Text altered by CEN corrigendum April 2014 is indicated in the text by .The UK participation
3、in its preparation was entrusted by Technical Committee EH/2, Air quality to Subcommittee EH/2/3, Ambient atmospheres.A list of organizations represented on this subcommittee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a co
4、ntract. Users are responsible for its correct application. The British Standards Institution 2014. Published by BSI Standards Limited 2014ISBN 978 0 580 86709 5ICS 13.040.20Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the
5、authority of the Standards Policy and Strategy Committee on 30 September 2012.Amendments/corrigenda issued since publicationDate Text affected31 May 2014 Implementation of CEN corrigendum April 2014BS EN 14212:2012EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 14212 August 2012 ICS 13.040.20 S
6、upersedes EN 14212:2005English Version Ambient air - Standard method for the measurement of the concentration of sulphur dioxide by ultraviolet fluorescence Qualit de lair ambiant - Mthode normalise pour le mesurage de la concentration en dioxyde de soufre par fluorescence U.V. Luftqualitt - Messver
7、fahren zur Bestimmung der Konzentration von Schwefeldioxid mit Ultraviolett-Fluoreszenz This European Standard was approved by CEN on 10 May 2012. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of
8、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 or to any CEN member. This European Standard exists in three official versions (English, French, German).
9、 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 official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cy
10、prus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United K
11、ingdom. 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 exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 14212:2012: EInc
12、orporating corrigendum April 2014BS EN 14212:2012EN 14212:2012 (E) 2 Contents Foreword 41 Scope 52 Normative references 53 Terms and definitions . 64 Abbreviated terms . 115 Principle 115.1 General 115.2 Measuring principle . 115.3 Type approval test . 125.4 Field operation and quality control 126 S
13、ampling . 136.1 General 136.2 Sampling location 136.3 Sampling system . 136.4 Control and regulation of sample flow rate 146.5 Sampling pump for the manifold 147 Analyser equipment 157.1 General 157.2 Selective traps for interfering agents 157.3 Optical assembly . 157.4 Pressure measurement . 157.5
14、Flow rate indicator . 157.6 Sampling pump for the analyser 167.7 Internal sulphur dioxide span source 167.8 Particle filter . 168 Type approval of ultraviolet fluorescence sulphur dioxide analysers . 168.1 General 168.2 Relevant performance characteristics and performance criteria . 178.3 Design cha
15、nge . 188.4 Procedures for determination of the performance characteristics during the laboratory test . 198.5 Determination of the performance characteristics during the field test 298.6 Type approval and uncertainty calculation . 339 Field operation and ongoing quality control 349.1 General 349.2
16、Suitability evaluation . 34BS EN 14212:2012EN 14212:2012 (E)BS EN 14212:2012EN 14212:2012 (E) 3 9.3 Initial installation . 369.4 Ongoing quality assurance/quality control. 379.5 Calibration of the analyser 399.6 Checks 409.7 Maintenance . 449.8 Data handling and data reports 459.9 Measurement uncert
17、ainty . 4510 Expression of results 4611 Test reports and documentation 4611.1 Type approval test . 4611.2 Field operation . 47Annex A (normative) Test of lack of fit . 49Annex B (informative) Sampling equipment. 51Annex C (informative) Ultraviolet fluorescence analyser . 53Annex D (informative) Mani
18、fold testing 54Annex E (normative) Type approval 56Annex F (informative) Calculation of uncertainty in field operation at the hourly limit value 75Annex G (informative) Calculation of uncertainty in field operation at the daily limit value . 83Annex H (informative) Calculation of uncertainty in fiel
19、d operation at the annual critical level 93Annex I (informative) Significant technical changes . 103Bibliography 104BS EN 14212:2012EN 14212:2012 (E)BS EN 14212:2012EN 14212:2012 (E) 4 Foreword This document (EN 14212:2012) has been prepared by Technical Committee CEN/TC 264 “Air quality”, the secre
20、tariat 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 2013, and conflicting national standards shall be withdrawn at the latest by February 2013. Attention is dr
21、awn 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 14212:2005. The technical changes made since EN 14212:2005 are listed in
22、Annex I of this European Standard. 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
23、 Republic of Macedonia, 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. BS EN 14212:2012EN 14212:2012 (E)BS EN 14212:2012EN
24、14212:2012 (E) 5 1 Scope This European Standard specifies a continuous measurement method for the determination of the concentration of sulphur dioxide present in ambient air based on the ultraviolet fluorescence measuring principle. This standard describes the performance characteristics and sets t
25、he relevant minimum criteria required to select an appropriate ultraviolet fluorescence analyser by means of type approval tests. It also includes the evaluation of the suitability of an analyser for use in a specific fixed site so as to meet the data quality requirements as specified in Annex I of
26、Directive 2008/50/EC 1 and requirements during sampling, calibration and quality assurance for use. The method is applicable to the determination of the mass concentration of sulphur dioxide present in ambient air up to 1000 g/m3. This concentration range represents the certification range for SO2fo
27、r the type approval test. NOTE 1 Other ranges may be used depending on the levels present in ambient air. NOTE 2 When the standard is used for other purposes than for measurements required by Directive 2008/50/EC, the ranges and uncertainty requirements may not apply. The method covers the determina
28、tion of ambient air concentrations of sulphur dioxide in zones classified as rural areas, urban-background areas and traffic-orientated locations and locations influenced by industrial sources. The results are expressed in g/m3(at 20 C and 101,3 kPa). NOTE 3 1 000 g/m3of SO2corresponds to 376 nmol/m
29、ol of SO2. This standard contains information for different groups of users. Clauses 5 to 7 and Annexes C and D contain general information about the principles of sulphur dioxide measurement by ultraviolet fluorescence analyser and sampling equipment. Clause 8 and Annex E are specifically directed
30、towards test houses and laboratories that perform type-approval testing of sulphur dioxide analysers. These sections contain information about: Type-approval test conditions, test procedures and test requirements; Analyser performance requirements; Evaluation of the type-approval test results; Evalu
31、ation of the uncertainty of the measurement results of the sulphur dioxide analyser based on the type-approval test results. Clauses 9 to 11 and Annexes F and G are directed towards monitoring networks performing the practical measurements of sulphur dioxide in ambient air. These sections contain in
32、formation about: Initial installation of the analyser in the monitoring network and acceptance testing; Ongoing quality assurance/quality control; Calculation and reporting of measurement results; Evaluation of the uncertainty of measurement results under practical monitoring conditions. 2 Normative
33、 references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) appl
34、ies. BS EN 14212:2012EN 14212:2012 (E)BS EN 14212:2012EN 14212:2012 (E) 6 EN 15267-1, Air quality Certification of automated measuring systems Part 1: General principles EN 15267-2, Air quality Certification of automated measuring systems Part 2: Initial assessment of the AMS manufacturers quality m
35、anagement system and post certification surveillance for the manufacturing process EN ISO 6142, Gas analysis Preparation of calibration gas mixtures Gravimetric method (ISO 6142) EN ISO 6143, Gas analysis Comparison methods for determining and checking the composition of calibration gas mixtures (IS
36、O 6143) EN ISO 6144, Gas analysis Preparation of calibration gas mixtures Static volumetric methods (ISO 6144) EN ISO 6145-6, Gas analysis Preparation of calibration gas mixtures using dynamic volumetric methods Part 6: Critical orifices (ISO 6145-6) EN ISO 6145-7, Gas analysis Preparation of calibr
37、ation gas mixtures using dynamic volumetric methods Part 7: Thermal mass-flow controllers (ISO 6145-7) EN ISO 6145-10, Gas analysis Preparation of calibration gas mixtures using dynamic volumetric methods Part 10: Permeation method (ISO 6145-10) EN ISO 14956, Air quality Evaluation of the suitabilit
38、y of a measurement procedure by comparison with a required measurement uncertainty (ISO 14956) EN ISO/IEC 17025, General requirements for the competence of testing and calibration laboratories (ISO/IEC 17025) ENV 13005:1999, Guide to the expression of uncertainty in measurement 3 Terms and definitio
39、ns For the purposes of this document, the following terms and definitions apply. 3.1 adjustment set of operations carried out on a measuring system so that it provides prescribed indications corresponding to given values of a quantity to be measured Note 1 to entry: Types of adjustment of a measurin
40、g system include zero adjustment of a measuring system, offset adjustment, and span adjustment (sometimes called gain adjustment). Note 2 to entry: Adjustment of a measuring system should not be confused with calibration, which is a prerequisite for adjustment. SOURCE: JCGM 200:2012 (VIM) 2 Note 3 t
41、o entry: In the context of this standard, adjustment is performed on measurement data rather than on the analyser. 3.2 ambient air outdoor air in the troposphere, excluding workplaces as defined by Directive 89/654/EEC, where provisions concerning health and safety at work apply and to which members
42、 of the public do not have regular access SOURCE: 2008/50/EC 1 BS EN 14212:2012EN 14212:2012 (E)BS EN 14212:2012EN 14212:2012 (E) 7 3.3 analyser measuring system that provides an output signal which is a function of the concentration, partial pressure, flow or temperature of one or more components o
43、f a gas mixture 3.4 availability of the analyser fraction of the time period for which valid measuring data of the ambient air concentration is available from an analyser 3.5 calibration operation that, under specified conditions, in a first step, establishes a relation between the quantity values w
44、ith measurement uncertainties provided by measurement standards and corresponding indications with associated measurement uncertainties and, in a second step, uses this information to establish a relation for obtaining a measurement result from an indication Note 1 to entry: A calibration may be exp
45、ressed by a statement, calibration function, calibration diagram, calibration curve, or calibration table. In some cases, it may consist of an additive or multiplicative correction of the indication with associated measurement uncertainty. Note 2 to entry: Calibration should not be confused with adj
46、ustment of a measuring system, often mistakenly called “self-calibration”, nor with verification of a calibration. Note 3 to entry: Often, the first step alone in the above definition is perceived as being calibration. SOURCE: JCGM 200:2012 (VIM) 2 Note 4 to entry In the context of this standard, ca
47、libration is a comparison of the analyser response to a known gas concentration with a known uncertainty when the information obtained from the comparison is used for the successive adjustment (if needed) of the analyser. 3.6 certification range concentration range for which the analyser is type-app
48、roved 3.7 check verification that the analyser is still operating within specified performance limits 3.8 combined standard uncertainty standard uncertainty of the result of a measurement when that result is obtained from the values of a number of other quantities, equal to the positive square root
49、of a sum of terms, the terms being the variances or co-variances of these other quantities weighted according to how the measurement result varies with changes in these quantities SOURCE: ENV 13005:1999 3.9 coverage factor numerical factor used as a multiplier of the combined standard uncertainty in order to
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