Nitrogen meters are calibrated for which of the following to measure nitrogen?
A. Mixture of nitrogen and air
B. Water saturated mixture of nitrogen and oxygen
C. Mixture of nitrogen and hydrogen
D. Nitrogen
Answer:B
Nitrogen meters are calibrated for which of the following to measure nitrogen?
A. Mixture of nitrogen and air B. Water saturated mixture of nitrogen and oxygen C. Mixture of nitrogen and hydrogen D. Nitrogen
Explanation: Nitrogen meters are calibrated for water saturated mixture of nitrogen and oxygen. Hence, this calibration cannot be used for dry gases.