Air separation nitrogen production, also known as pressure swing adsorption nitrogen production (PSA). Due to the chemical inactivity of nitrogen, it is not easy to react with other substances in its normal state. However, pure nitrogen cannot be directly obtained from nature, so it is necessary to obtain nitrogen through air separation. The nitrogen/oxygen content requires a nitrogen oxygen analyzer to detect and analyze.

If the oxygen content in nitrogen exceeds the process indicators, it will directly threaten production safety. Therefore, regular and timely accurate monitoring of the oxygen content in nitrogen is the daily work of the PVC analysis room water quality position. At the same time, it is also necessary to monitor the oxygen content in the distillation product gas and tail gas in order to calculate the distillation yield and ensure safety. In general, measuring nitrogen gas indirectly reflects nitrogen content by measuring oxygen content.