In OXYMAT-M oxygen analyser which of the following is usually used as reference gas?
A. Hydrogen
B. Nitrogen
C. Helium
D. Ambient air
Answer:D
In OXYMAT-M oxygen analyser which of the following is usually used as reference gas?
A. Hydrogen B. Nitrogen C. Helium D. Ambient air
Explanation: In OXYMAT-M oxygen analyser, ambient air is usually used as reference gas. Its measuring procedure is based on pressure difference which develops between two gases having different oxygen concentration in the magnetic field.