This European Standard describes the paramagnetic method, including the sampling and the gas conditioning
system, to determine the oxygen concentrations in flue gases emitted to the atmosphere from ducts and
stacks.
This European Standard is the Standard Reference Method (SRM) for periodic monitoring and for the
calibration or control of Automatic Measuring Systems (AMS) permanently installed on a stack, for regulatory
purposes or other purposes. To be used as the SRM, the user shall demonstrate that the performance
characteristics of the method are better than the performance criteria defined in this European Standard and
that the overall uncertainty of the method is less than ± 6,0 % of the measured concentration.
NOTE When paramagnetism is the measurement principle used for AMS, reference should be made to EN 14181
and other relevant standards provided by CEN/TC 264.
An alternative method to this SRM may be used provided that the user can demonstrate equivalence
according to the Technical Specification CEN/TS 14793, to the satisfaction of his national accreditation body
or law.
This Standard Reference Method has been evaluated during field tests on waste incineration, co-incineration
and large combustion installations. It has been validated for sampling periods of 30 min in the range: 5 % to
26 %. Oxygen concentration values, expressed in % volume, are used in order to allow emission
measurements of pollutants to be standardised to the reference O2 concentration and dry gas conditions
required by the following Council Directives:
Council Directive 2001/80/EC on the limitation of emissions of certain pollutants into the air from large
combustion plants;
Council Directive 2000/76/EC on waste incineration plants.
EN 14789:2005 Referenced Document
EN ISO 14956 Air quality - Evaluation of the suitability of a measurement procedure by comparison with a required measurement uncertainty ISO 14956: 2002
EN 14789:2005 history
2017EN 14789:2017 Stationary source emissions - Determination of volume concentration of oxygen - Standard reference method: Paramagnetism
2005EN 14789:2005 Stationary source emissions - Determination of volume concentration of oxygen (O2) - Reference method - Paramagnetism