Patent ID: 11906464
Assignee: ATONARP INC.
Field: Measurement (Instruments)
Classification: CPC G  F  H | IPC F  G

Claim 5:
6. A control method of a lyophilization system that includes:
a chamber for freeze drying a product;
a vacuum unit for placing the chamber at a negative pressure;
a gas supplying unit for supplying a gas for pressurization purposes to the chamber;
a line for supplying at least a part of exhaust gas from the chamber to a sensor for gas analyzing; and
a system controller,
the control method comprising measuring, by the system controller, an end point of freeze-drying process performed in the chamber by monitoring an amount of moisture in the exhaust gas using the sensor;
primary drying at a lower temperature after a freezing; and
secondary drying at a higher temperature, wherein the system controller dynamically changes a processing time at which a predetermined temperature is maintained according to a change of the amount of moisture in time.