Air, after compression and dehumidification, is pumped into adsorption tank.
There are 2 processes taking place inside the adsorption tank, which are i) the process of adsorbing oxygen molecules onto the adsorbent material under pressure and abstracting nitrogen molecules, ii) the process of desorbing oxygen molecules from adsorbent material by depressurization to atmospheric pressure. In order to have continuous nitrogen output, the two processes repeat alternately in the two parallel adsorption tanks. This method is called PSA (Pressure Swing Adsorption).
Generated nitrogen is stalled in the gas tank, which the purity is monitored by integrated oxygen sensor.
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