NEN EN 14211 : 2012

1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and abbreviated terms
5 Principle
   5.1 General
   5.2 Measuring principle
   5.3 Type approval test
   5.4 Field operation and quality control
6 Sampling equipment
   6.1 General
   6.2 Sampling location
   6.3 Sample inlet and sampling line
   6.4 Particulate filter
   6.5 Control and regulation of sample flow rate
   6.6 Sampling pump for the manifold
7 Analyser equipment
   7.1 General
   7.2 Converter
   7.3 Ozone generator
   7.4 Reaction chamber
   7.5 Optical filter
   7.6 Detector
   7.7 Ozone removal device
   7.8 Sampling pump for the analyser
   7.9 Residence time inside the analyser
8 Type approval of nitrogen dioxide and nitrogen monoxide
   analysers
   8.1 General
   8.2 Relevant performance characteristics and performance
        criteria
   8.3 Design change
   8.4 Procedures for determination of the performance
        characteristics during the laboratory test
   8.5 Determination of the performance characteristics during
        the field test
   8.6 Expanded uncertainty calculation for type approval
9 Field operation and ongoing quality control
   9.1 General
   9.2 Suitability evaluation
   9.3 Initial installation
   9.4 Ongoing quality control
   9.5 Calibration of the analyser
   9.6 Checks
   9.7 Maintenance
   9.8 Data handling and data reports
10 Expression of results
11 Test reports and documentation
   11.1 Type approval test
   11.2 Field operation
Annex A (normative) Calculation of residence times for a
        maximum allowable NO[2] increase in the sampling
        line [ISO 13964]
Annex B (normative) Test of lack of fit
Annex C (informative) Sampling equipment
Annex D (informative) Sampling on microscale [2]
Annex E (informative) Types of chemiluminescence analysers
Annex F (informative) Manifold testing equipment
Annex G (normative) Type approval
Annex H (normative) Calculation of uncertainty in field
        operation at the hourly limit value
Annex I (normative) Calculation of uncertainty in field
        operation at the annual limit value
Bibliography

Defines a continuous measurement method for the determination of the concentrations of nitrogen dioxide and nitrogen monoxide present in ambient air based on the chemiluminescence measuring principle.