Hydrogen dryer system with online dew point transmitter. Hydrogen Gas is generated by process of electrolysis of water, and hydrogen produced with this method has high content of moisture .For some applications this is not desired and hence the need for removal of moisture from gas. This is achieved by a pressure swing adsorption cycle run with the help of Programmed Logic controls (PLC) integrated with hardware like solenoid valves and pressure switches with sufficient safety interlock.