A CO₂ Analyzer Is Calibrated Using a 5% CO₂ Mixture

Multiple Choice

A CO₂ analyzer is calibrated using a 5% CO₂ mixture with the sampling pump set at 500 ml/min;a water vapor absorber is then added to the sample line.Which of the following should be done before using this system?

A) Increase the sampling pump flow to at least 750 ml/min.
B) Decrease the sampling pump flow to less than 50 ml/min.
C) Recalibrate the analyzer.
D) Calculate the "corrected" CO₂ reading.