Aero therm systems introduces fluid bed dryer having a batch capacity of 15 kg to 500 kg. A digital temperature controller is attached to give accurate temperature. Also, the accuracy can be on/off or pid as required. The heating is done either by electrical/thermic fluid or steam radiator/oil fired hot air generator. The materials used to make the dryers are ms, aluminum, ss 316, ss 304 or as per requirement.