Atmospheric analysis and control
Heat treatment atmospheres

The gaseous species most commonly analyzed in heat treatment are CO, CO₂, CH₄, H₂, O₂ and H₂O. Although a large number of analysis methods have been developed over time, some have become established among industry players because of their ease of use, analytical accuracy and robustness and reliability over time. These include physical, physico-chemical, chemical and electrochemical methods, with an increasing use of physical methods [1][30].

CO, CO₂ and CH₄ contents in the atmosphere of a heat treatment furnace are most often measured using infrared analyzers. The operation of these analyzers...