10 Questions
Which method is commonly used to detect carbon monoxide (CO) in combustion flue gases at low levels?
Non-dispersive infrared (NDIR)
Which gases are not detected by the non-dispersive infrared (NDIR) method?
Oxygen, hydrogen, and nitrogen
What is the standard method for analyzing sulfur dioxide (SO2)?
Ultraviolet fluorescence
Which type of extractive monitoring involves diluting the flue gas with clean, dry air before sending it to the analyzer?
Dilution extractive
What technology uses infrared sensors to measure flue gas components?
Optical methods
Which type of analyzer uses zirconium oxide fuel cells to measure oxygen concentration in flue gases?
Zirconium oxide fuel cell analyzer
What is the purpose of a sample conditioner in extractive sampling?
To remove moisture and condensable components from the flue gas
Which type of flue gas analyzer measures only the carbon dioxide (CO2) content of the sample?
Analyzers that measure only the carbon dioxide (CO2) content
What is the difference between wet and dry flue gas samples?
Wet analysis includes water vapor as one of the constituents of the flue gas, while dry analysis does not
What is the difference between in situ analysis and extractive analysis?
In situ analysis is performed directly through probes in the stack or flue, while extractive analysis involves drawing gas out and sending it to an analyzer
Test your knowledge on typical automatic flue gas analyzers in this quiz. Learn about the different devices used to analyze flue gas and measure carbon dioxide (CO2), oxygen (O2), carbon monoxide (CO), and hydrogen (H2) content.
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