Zirconia probe is used for the measurement of___________________?
Correct answer: C. % O2 in flue gas
- A. Humidity of air
- B. % CO2 in flue gas
- C. % O2 in flue gas
- D. Speed of a submarine
Explanation
A zirconia probe develops an electrochemical voltage related to the difference in oxygen partial pressure, so it is used to determine oxygen concentration in flue gas. It is not a carbon-dioxide or humidity sensor.
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