1. Operational Principle PSA nitrogen generation adopts carbon molecular sieve as adsorbent whose capacity of adsorbing the oxygen in air shall be larger more than of adsorbing the nitrogen in air. By means of valve opened and closed with PLC, two columns a&b can be shifted in circulation for pressured adsorption,de-pressured dis-adsorption in turn so as to separate the oxygen and nitrogen in air, thus a nitrogen gas with purity demanded can be made. 2. Typical application Nitrogen is used in short-circuit, large-scale integrated circuit, color and black & white picture tubes, parts of TV sets and recorders, semiconductors manufacturing, electrical equipments as well as laser drilling and other electrical components as protective atmosphere. 3. Specification Flow: 3~5000Nm3/h Purity:95%~99.9995% Pressure: 0.1~0.8Mpa Dew point:-45 .Certification:ISO90001,CE .Voltage: 220V/50HZ .Warranty:1 Year 4. Main features Provide the user with the maximum economic valueThe filling and compacting the molecular sieve shall be made in special method so that the larger compaction intensity and higher adsorption efficiency can be got.