DIN EN 15058:2017-05

This European Standard specifies the standard reference method (SRM) based on the infrared (IR) absorption principle. It includes the sampling and the gas conditioning system, and allows the determination of the carbon monoxide CO in flue gases emitted to the atmosphere from ducts and stacks. This European Standard specifies the characteristics to be determined and the performance criteria to be fulfilled by portable automated measuring systems (P-AMS) using the IR measurement method. It applies for periodic monitoring and for the calibration or control of automated measuring systems (AMS) permanently installed on a stack, for regulatory or other purposes. This European Standard specifies criteria for demonstration of equivalence of an alternative method (AM) to the SRM by application of EN 14793. This European Standard has been validated during field tests on waste incineration, co-incineration and large combustion plants and on a recognized test bench. It has been validated for CO concentrations with sampling periods of 30 min in the range of 0 mg/m3 to 400 mg/m3 for large combustion plants and 0 mg/m3 to 740 mg/m3 for waste and co-incineration. Directive 2010/75/EU lays down emission values which are expressed in mg/m3, on dry basis at a specified value of oxygen and at standard conditions (273 K and 101,3 kPa). The revised version of DIN EN 15058:2006 contains corrections and adaptations to newer standards. These include in particular: - Directive 2000/76/EC has been replaced by Directive 2010/75/EU; - the normative reference to EN 13284-1 has been replaced by EN 15259 regarding requirements for measurement sections and sites and for the measurement objective, plan and report; - the normative reference to EN 15267-4 regarding the minimum requirements and test procedures for portable automated measuring systems for monitoring emissions from stationary sources has been added; - the definitions have been revised taking the definitions in EN 15259 into account and the new version of VIM (2012); - the detection limit has been deleted from the list of definitions and performance characteristics as repeatability at zero is more suitable; - the symbols and abbreviations used in the main section of the document have been included; - two new sampling and conditioning configurations have been included: Configuration 3: dilution with dry, clean, ambient air or nitrogen of the gas to be characterized; Configuration 4: maintaining the temperature of the measurement line up to the heated analyser; - the performance characteristics shall be determined in a general performance test according to the test procedures described in EN 15267-4; - the influence of atmospheric pressure has been deleted in Table 1; - a reference to EN 15259 has been added to determine the homogeneity of the exhaust gas profile; - test gases shall have concentrations traceable to SI units; - an equation to calculate the concentration corrected when drift occurs has been included; - the expression of results has been modified to be in line with EN 15259; - the standard deviation sr,limit according to new rules specified in EN 14793 has been recalculated; - an estimate of the expanded uncertainty calculated through the determination of reproducibility has been included and has replaced the expression "reproducibility confidence interval"; - a new annex on the calculation of uncertainty based on the concentration specification for dry gas and for oxygen reference conditions has been included; - presentation of the calculation of the uncertainty budget has been improved; - typing errors in the table to determine the drift have been corrected. This draft standard is intended in particular for testing laboratories that use standard reference methods within the scope of periodic measurements, for manufacturers of corresponding measuring equipment, for testing institutes that conduct performance tests of such measuring equipment, for plant operators and for supervisory authorities. This draft standard deals in particular with aspects of environmental protection and quality control in emission monitoring. The responsible committee for this standard is NA 134-04-01 AA "Emissionsmessverfahren" ("Emission measurement techniques") at DIN.