1、December 2012 Translation by DIN-Sprachendienst.English price group 30No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).I
2、CS 13.040.20!$-“1931059www.din.deDDIN EN 14625Ambient air Standard method for the measurement of the concentration of ozone byultraviolet photometry;English version EN 14625:2012,English translation of DIN EN 14625:2012-12Auenluft Messverfahren zur Bestimmung der Konzentration von Ozon mit Ultraviol
3、ett-Photometrie;Englische Fassung EN 14625:2012,Englische bersetzung von DIN EN 14625:2012-12Air ambiant Mthode normalise de mesurage de la concentration en ozone par photomtrie U.V.;Version anglaise EN 14625:2012,Traduction anglaise de DIN EN 14625:2012-12SupersedesDIN EN 14625:2005-07www.beuth.deD
4、ocument comprises 98 pagesIn case of doubt, the German-language original shall be considered authoritative.11.12This standard has been included in the VDI/DIN Handbook on air quality, Volume 5. DIN EN 14625:2012-12 2 A comma is used as the decimal marker. National foreword This standard has been pre
5、pared by Technical Committee CEN/TC 264 “Air quality” (Secretariat: DIN, Germany), Working Group WG 12 “Reference method for determination of SO2/NO2/O3/CO in ambient air” (Secretariat: NEN, Netherlands). The responsible German body involved in its preparation was the Kommission Reinhaltung der Luft
6、 (KRdL) im VDI und DIN Normenausschuss (Commission on Air Pollution Prevention of VDI and DIN Standards Committee). The DIN Standard corresponding to the International Standard referred to in this document is as follows: ISO 13964 DIN ISO 13964 Amendments This standard differs from DIN EN 14625:2005
7、-07 as follows: a) Clause 1 “Scope”: the scope has been extended to include information for different groups of users; b) Subclause 6.3 “Sampling system” and former Annex A: the residence time is no longer calculated from reaction kinetics as prescribed in Annex A. This Annex has been deleted; c) Su
8、bclauses 8.1 and 8.3: normative references to EN 15267-1 and EN 15267-2 have been included; d) Subclauses 8.4.5 and 9.3: a formula for calculation of the detection limit of an analyser and information about its application have been included; e) Subclauses 9.4 and 9.6: the performance requirements f
9、or some performance characteristics have been tightened. Additional performance criteria and tests have been introduced for repeatability at zero and span levels; f) Subclause 9.5: formulae for software adjustment of the raw analyser signal after calibration have been introduced; g) Subclause 9.9 (n
10、ew): general information on measurement uncertainty has been included; h) Clause 11: more stringent requirements have been specified for test reports and documentation; i) the former Annex D has been replaced by the reference to Directive 2008/50/EC (Subclause 6.2); j) Annex E.3 (previously F.3): th
11、e formulae for the calculation of the influence quantities have been modified; k) Annex G (new): the calculation of uncertainty in field operation at the 8-hour target value has been specified; l) Annex E (previously F) to Annex G: examples of calculations have been modified/supplemented. Previous e
12、ditions DIN EN 14625: 2005-07 DIN EN 14625:2012-12 3 National Annex NA (informative) Bibliography DIN ISO 13964, Air quality Determination of ozone in ambient air Ultraviolet photometric method VDI 4202 Part 1, Performance criteria for performance tests of automated ambient air measuring systems Poi
13、nt-related measurement methods for gaseous and particulate air pollutants VDI 4203 Part 1, Testing of automated measuring systems General concepts VDI 4203 Part 3, Testing of automated measuring systems Test procedures for point-related ambient air measuring systems for gaseous and particulate air p
14、ollutants DIN EN 14625:2012-12 4 This page is intentionally blank EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 14625 August 2012 ICS 13.040.20 Supersedes EN 14625:2005English Version Ambient air - Standard method for the measurement of the concentration of ozone by ultraviolet photometry Air
15、 ambiant - Mthode normalise de mesurage de la concentration en ozone par photomtrie U.V. Auenluft - Messverfahren zur Bestimmung der Konzentration von Ozon mit Ultraviolett-Photometrie This European Standard was approved by CEN on 10 May 2012. CEN members are bound to comply with the CEN/CENELEC Int
16、ernal 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 or to an
17、y 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 official v
18、ersions. 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, Norwa
19、y, 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 exploitation in an
20、y form and by any means reserved worldwide for CEN national Members. Ref. No. EN 14625:2012: EEN 14625:2012 (E) 2 Contents Contents 2Foreword 41 Scope 52 Normative references 63 Terms and definitions . 64 Abbreviated terms . 115 Principle 115.1 General 115.2 Measuring principle . 115.3 Type approval
21、 test . 125.4 Field operation and quality control 126 Sampling . 126.1 General 126.2 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 147.1 General 147.2 Ultraviolet absorption cell . 157.3 Ultravio
22、let source lamp . 157.4 UV detector . 157.5 Ozone-specific scrubber . 157.6 Switching valve 157.7 Temperature indicator . 157.8 Pressure indicator . 157.9 Flow rate indicator . 167.10 Sampling pump for the analyser 167.11 Internal ozone span source 167.12 Particle filter . 168 Type approval of ultra
23、violet photometric ozone analysers . 168.1 General 168.2 Relevant performance characteristics and performance criteria . 178.3 Design change . 18DIN EN 14625:2012-12 EN 14625:2012 (E) 3 8.4 Procedures for determination of the performance characteristics during the laboratory test . 198.5 Determinati
24、on of the performance characteristics during the field test 308.6 Type approval and uncertainty calculation. 339 Field operation and ongoing quality control 349.1 General 349.2 Suitability evaluation . 349.3 Initial installation . 369.4 Ongoing quality assurance/quality control. 379.5 Calibration of
25、 the analyser 389.6 Checks 409.7 Maintenance . 449.8 Data handling and data reports 449.9 Measurement uncertainty . 4510 Expression of results 4511 Test reports and documentation 4511.1 Type approval test . 4511.2 Field operation . 47Annex A (normative) Test of lack of fit . 48Annex B (informative)
26、Sampling equipment. 50Annex C (informative) Ultraviolet photometric analyser . 52Annex D (informative) Manifold testing equipment . 54Annex E (normative) Type approval 56Annex F (informative) Calculation of uncertainty in field operation at the hourly alert threshold value . 75Annex G (informative)
27、Calculation of uncertainty in field operation at the 8-hour target value . 83Annex H (informative) Significant technical changes . 93Bibliography 94DIN EN 14625:2012-12 EN 14625:2012 (E) 4 Foreword This document (EN 14625:2012) has been prepared by Technical Committee CEN/TC 264 “Air quality”, the s
28、ecretariat 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 i
29、s 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 14625:2005. The technical changes made since EN 14625:2005 are listed
30、 in Annex H 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 Yugo
31、slav 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. DIN EN 14625:2012-12 EN 14625:2012 (E) 5 1 Scope
32、 This European Standard specifies a continuous measurement method for the determination of the concentrations of ozone present in ambient air based on the ultraviolet photometric measuring principle. This standard describes the performance characteristics and sets the relevant minimum criteria requi
33、red to select an appropriate ultraviolet photometric 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 Directive 2008/50/EC 1 and requirem
34、ents during sampling, calibration and quality assurance for use. The method is applicable to the determination of the concentration of ozone present in ambient air up to 500 g/m3. This concentration range represents the certification range for ozone for the type approval test. NOTE 1 Other ranges ma
35、y be used for measurement systems applied at rural locations monitoring ecosystems. NOTE 2 When the standard is used for other purposes than Directive 2008/50/EC, the ranges and uncertainty requirements may not apply. The method covers the determination of ambient air concentrations of ozone in zone
36、s classified as rural areas, urban and urban-background areas. The results are expressed in g/m3(at 20 C and 101,3 kPa). NOTE 3 500 g/m3of O3corresponds to 250 nmol/mol of O3at 20 C and 101,3 kPa. This standard contains information for different groups of users. Clauses 5 to 7 and Annexes B and C co
37、ntain general information about the principles of ozone measurement by ultraviolet photometric analyser and sampling equipment. Clause 8 and Annex E are specifically directed towards test houses and laboratories that perform type-approval testing of ozone analysers. These sections contain informatio
38、n about: type-approval test conditions, test procedures and test requirements; analyser performance requirements; evaluation of the type-approval test results; evaluation of the uncertainty of the measurement results of the ozone analyser based on the type-approval test results. Clauses 9 to 11 and
39、Annexes F and G are directed towards monitoring networks performing the practical measurements of ozone in ambient air. These sections contain information about: initial installation of the analyser in the monitoring network and acceptance testing; ongoing quality assurance/quality control; calculat
40、ion and reporting of measurement results; evaluation of the uncertainty of measurement results under practical monitoring conditions. DIN EN 14625:2012-12 EN 14625:2012 (E) 6 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indi
41、spensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 15267-1, Air quality Certification of automated measuring systems Part 1: General principles EN 15267-2, A
42、ir quality Certification of automated measuring systems Part 2: Initial assessment of the AMS manufacturers quality management system and post certification surveillance for the manufacturing process EN ISO 6145-6, Gas analysis Preparation of calibration gas mixtures using dynamic volumetric methods
43、 Part 6: Critical orifices (ISO 6145-6) EN ISO 6145-7, Gas analysis Preparation of calibration gas mixtures using dynamic volumetric methods Part 7: Thermal mass-flow controllers (ISO 6145-7) EN ISO 14956, Air quality Evaluation of the suitability of a measurement procedure by comparison with a requ
44、ired 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 ISO 13964:1998, Air quality Determination of ozone in ambient air Ultraviol
45、et photometric method 3 Terms and definitions 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
46、to entry Types of adjustment of a measuring 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 adjustmen
47、t. SOURCE: JCGM 200:2012 (VIM) 2 Note 3 to entry In the context of this standard, adjustment is performed on measurement data rather than on the analyser. 3.2 alert threshold level beyond which there is a risk to human health from brief exposure for the population as a whole and at which immediate s
48、teps are to be taken by the Member States SOURCE: 2008/50/EC 1 3.3 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 of the public do not have regular access SOURCE: 2008/50/EC 1 DIN EN 14625:2012-12 EN 14625:2012 (E) 7 3.4 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 of a gas mixture 3.5 availability of the analyser fraction of
