NBN EN 14790 : 2006

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
   4.1 General
   4.2 Adsorption or condensation/adsorption method
   4.3 Temperature method
5 Apparatus
   5.1 General
   5.2 Sampling probe
   5.3 Filter housing
   5.4 Particle filter
   5.5 Trapping unit
   5.6 Cooling System (optional)
   5.7 Sampling pump
   5.8 Gas volume meter
   5.9 Barometer
   5.10 Balance
   5.11 Temperature measurement
6 Measurement procedure
   6.1 General requirements
   6.2 Preparation and installation of equipment
        6.2.1 Sampling location
        6.2.2 Sampling point
        6.2.3 Assembling the equipment
   6.3 Leak test
   6.4 Performing of the sampling
        6.4.1 Introduction of the probe in the duct
        6.4.2 Sampling
   6.5 Repeatability of the weighing
   6.6 Procedure for gas streams saturated with water
        (droplets present)
7 Determination of the characteristics of the method:
   sampling and analysis
   7.1 Introduction
   7.2 Relevant performance characteristics of the method
        and performance criteria
   7.3 Establishment of the uncertainty budget
   7.4 Equivalency with an alternative method
8 Evaluation of the method in the field
9 Water vapour determination
10 Report
Annex A (normative) Determination of water vapour
          concentration for water saturated gas, at
          P[std] = 101,325 kPa
Annex B (informative) Type of sampling equipments
Annex C (informative) Example of assessment of compliance
          of reference method for water vapour with
          requirements on emission measurements
      C.1 General
      C.2 Process of uncertainty estimation
          C.2.1 Determination of the model equation
          C.2.2 Quantification of uncertainty components
          C.2.3 Calculation of the combined uncertainty
      C.3 Specific conditions in the field
      C.4 Performance characteristics of the method
      C.5 Calculation of standard uncertainty of the
          concentration
          C.5.1 Model equation and application of the rule
                of the uncertainty propagation
          C.5.2 Results of standard uncertainties calculations
          C.5.3 Estimation of the combined uncertainty
Annex D (informative) Evaluation of the method in the field
      D.1 General
      D.2 Characteristics of installations
      D.3 Repeatability and reproducibility in the field
          D.3.1 Repeatability
          D.3.2 Reproducibility
Annex ZA (informative) Relationship between this European
          Standard and the Essential Requirements of EU
          Directive
Bibliography

Explains the condensation/adsorption technique, including the sampling system, to determine the water vapour concentration in the flue gases emitting to atmosphere from ducts and stacks.