Which of the following measuring technique is utilized for measuring nitrogen?
A. By using a method based on gas density
B. By using paramagnetic analyzers
C. By using magnetic wind instruments
D. By using a photospectrometer where a gas sample is analysed and detected with a photocell
Answer:D
Which of the following measuring technique is utilized for measuring nitrogen?
A. By using a method based on gas density B. By using paramagnetic analyzers C. By using magnetic wind instruments D. By using a photospectrometer where a gas sample is analysed and detected with a photocell
Explanation: By using a photospectrometer gas sample is analysed, for measuring nitrogen. It is then selectively filtered by using a photocell which provides an appropriate electric signal.