OPM series Modular oxygen generator adopt PSA(pressure swing adsorption)technology,using air as raw materials,quality selection of adsorbent,and under certain pressure,the adsorption capacity of adsorbents for oxygen and nitrogen is different,though programmable program control pneumatic valve opening and closing to control the adsorber alternate cycle,pressure adsorption and vacuum stripping,complete separation of oxygen and nitrogen,get high purity oxygen.