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This standard specifies an automated measurement method for the continuous determination of the concentration of sulphur dioxide present in ambient air based on the ultraviolet fluorescence measuring principle. This method is also the reference method for measurements in connection with Directive 2008/50/EC on ambient air quality and cleaner air for Europe. For this reason the standard contains the minimum criteria required to select an appropriate ultraviolet fluorescence analyser by means of type approval tests and the evaluation of the suitability of an analyser for use in a specific fixed site (rural areas, urban-background areas and traffic-orientated locations) so as to meet the data quality requirements as specified in the EU Directive. The method is applicable to the determination of the mass concentration of sulphur dioxide present in ambient air up to 1 000 µg/m3. This concentration range represents the certification range for the type approval test. The standard contains information for different groups of users: a) general information about the principles of SO2 measurement by ultraviolet fluorescence analyser and sampling equipment. b) information for test houses and laboratories that perform type-approval testing of automated analysers: - test conditions, test procedures and test requirements; - minimum criteria required to select an analyser; - evaluation of the test results; - establishment and evaluation of the measurement uncertainty. c) information for air quality monitoring networks: - 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 measurement uncertainty under practical monitoring conditions. As a result this standard gains considerable importance for manufacturers of analysers. This standard is the European-wide foundation for uniform measurement of air quality in relation to the SO2 concentration.
This document replaces DIN EN 14212:2005-06 .
This document has been corrected by: DIN EN 14212 Berichtigung 1:2014-08 .