CHEMCO Questions

Question 1 / 260

With respect to oxygen analyser, used for measurement of oxygen level in enclosed spaces

Oxygen analyser is used to measure oxygen level only in rich condition, above 21% oxygen
Oxygen analyser is used to measure oxygen level only in inert condition, below 5% oxygen
Oxygen analyser is used to measure oxygen level both lean and rich condition, below and above 5 - 21% oxygen