The humidity generator HGC 20EC is designed for the automated regulation of the relative humidity of ambient clean air for a wide range of applications.&nbsp;<br />It is easily connectable to any temperature controlled measuring chamber (OCA, TGA, TMA, DSC etc.).<br />The ambient air first flows through the integrated desiccant reservoir. An electronic valve, controlled by the humidity and temperature sensor â??directly mounted in the measuring chamberâ?? diverts some air through the heated water reservoir before it flows through the heated connection tube.