Sterilization oven Tunnel Oven Precision Vacuum Oven 1.�GMH series High Temperature Sterilization Ovens are applicable to the bacteria-killing, pyrogen-removing and drying sterilization of solid objects such as vials, ampoule bottles, aluminum caps and metal or glassware. 2.�GMH series High Temperature Sterilization Ovens are the products of the latest generation which have been developed in recent years under GMP requirements and it has been used in hundreds of pharmaceutical factories in overseas market. The machine??s control system is advanced and sensitive, equipped with Siemens Touch Screen, Siemens PLC, Yokogawa Recording Meter, Dwyer Differential Pressure Meters, Automatic Drain Valve and some other key components are brands from Japan, United States and Europe. So that we can guarantee the products quality. 3.�GMH series machines are available for users to choice in terms of configuration and size. Moreover, we also accept customized machines based on user??s usage, site layout and production capacity requirements etc. � 4.�Operation Principle: Place the trays, bottles or trolley fully loaded with the materials into the chamber of oven and start PLC programmable control system. Then, the blower for internal circulation is running and heating starts, meanwhile the butterfly valve opens and the temperature of the oven chamber rises rapidly. With the blower for internal circulation, hot and dry air enters into the oven chamber through the high-temperature resistant HEPA filters. Under the role of micro-porous regulation, an evenly-distributed air is formed for transmission into the oven chamber. The dry air absorbs the moisture remaining on the surfaces of materials for its entrance into the heating channel, resulting in evaporation and outward expulsion. The dry air flows in directional circulation simultaneous intermittent supplementation of fresh filtered air, the inside chamber of oven exhibits the state of micro-positive pressure. With the termination of the constant temperature, the control of processing comes to the end. When the air delivering or forced cooling (with water) starts, the automatic butterfly valve will close, and then it gives sound and light alarm to open the door and remove the materials or bottles.