What Are The Specifications for The Principle, Flow Rate, And Purity of PSA Nitrogen Generators? PSA (Pressure Swing Adsorption) nitrogen generators are high-purity nitrogen production devices based on pressure swing adsorption technology, widely used in industries such as manufacturing, electronics, food processing, and chemicals. Their operating principle involves using carbon molecular sieves to selectively adsorb nitrogen and oxygen from air, thereby achieving nitrogen separation and purification. The following is a detailed explanation of the principle, flow rate, and purity of PSA nitrogen generators.