Technical Bulletin No. 0416: Carbon Monoxide Emissions From Selected Combustion Sources Based On Short-Term Monitoring Records

This technical bulletin’s contents described the measurement principles used in then state-of-the-art carbon monoxide monitors and identify potential interferences and gas conditioning requirements if representative sample monitoring data are to be generated. The field study showed that carbon monoxide monitors then in use generally exhibited three weaknesses; namely, a positive interference from carbon dioxide and moisture, a positive drift from particulate accumulation, and inaccurate transmission of monitor output to the recorder. Because of fluctuations, carbon monoxide emission rates were found to be below the average most of the time and influenced by combustion air use practices which hindered complete combust ion either by (a) limited oxygen availability or (b) reduced residence time in the combustion zone.