Oxygen Concentrator in Varanasi. • Flow rate 1-5 LPM, with an increment of 0.5 LPM • High / Low voltage Alarm Sensors • PSA (Pressure Swing Adsorption) Technology • Inbuilt Nebulizer and Timer (10 MIN to 5 HOURS) • Alarms for Low Oxygen purity, Low pressure and for Power Fluctuation and defective information displayed on the screen..