Should nitrogen alarms be installed in the separate units and nitrogen production facilities, or should oxygen level detection alarms be used instead?
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Should nitrogen alarms be installed in the air separation unit and nitrogen production plant? Should oxygen level detection alarms be installed instead? If installing, what is the appropriate installation height? Are there any relevant specifications?
Installation specifications for combustible gas and toxic gas detection alarms! There are in the forum
I do have the guidelines, but my situation is rather special, so those guidelines don’t apply.
Nitrogen is an inert gas, and conventional monitoring methods do not detect it; generally, oxygen concentration is what is measured. Almost all the clients I work with have oxygen detectors installed. Oxygen has a density slightly higher than that of air, so it’s best to install the detectors at a height of 0.6 meters above the ground
Install an oxygen content detection alarm at a height of 0.6–2 meters (at this height, the oxygen concentration is suitable for normal human respiration). For combustible gas or toxic gas detectors that are heavier than air, the installation height should be 0.3–0.6 meters ； Lighter than air, with an installation height of 0.6–2 m.
Generally, nitrogen content is determined indirectly by measuring oxygen content, as air consists mainly of nitrogen and oxygen; nitrogen being an inert gas, it is difficult to measure.
I agree with the opinion from the 6th floor: a detector for oxygen concentration should be used. Oxygen is slightly heavier than air, so the installation height should be between 0.6 and 2 meters; we will choose 1.5 meters, as this height ensures that the oxygen concentration is suitable for normal human respiration.
Which standard specifies the requirement for oxygen content analysis in an air compression nitrogen generation station?
Oxygen detectors must be installed in nitrogen compressors or enclosed or semi-enclosed facilities containing nitrogen, at a height of 1.5 meters.
Just set it in accordance with the requirements of GB50493-2019; there are requirements regarding height