What instrument is proper for measuring carbon dioxide in flue gas?

A combustion analyzer is the appropriate instrument for measuring carbon dioxide in flue gas because it is specifically designed to assess the efficiency and emissions of combustion processes. This tool typically measures several important combustion gases, including carbon dioxide, oxygen, carbon monoxide, and sometimes nitrogen oxides and sulfur dioxide.

By measuring carbon dioxide, the combustion analyzer helps HVAC technicians evaluate how complete the combustion process is, and assists in optimizing the performance of heating systems to ensure they operate efficiently and safely. Proper combustion conditions are important for system efficiency and reducing harmful emissions, which is why accurate measurement of carbon dioxide is critical.

In contrast, a flue gas analyzer can also measure carbon dioxide; however, combustion analyzers are more advanced and tailored for a comprehensive analysis of combustion efficiency. Manometers are primarily used to measure gas pressure, and multimeters are utilized for electrical measurements, neither of which would provide data on flue gas composition.