In situ freeze dryers are widely used in fields such as medicine, pharmaceuticals, biological research, chemical engineering, and food. Items that have undergone freeze-drying treatment are easy to store for a long time, and can be restored to their pre freeze-drying state and maintain their original biochemical characteristics after adding water.

Product Name: In situ freeze dryer(Silicone oil heating)
Product quotation: 168000
Product Model:LGJ-20F（普通型）
Product Description:Implemented automation
Product brand:Yuming brand



LGJ-20FIn situ silicone oil freeze dryer (ordinary type)
Product Usage
Vacuum freeze dryers are widely used in fields such as medicine, pharmaceuticals, biological research, chemical engineering, and food. Items that have undergone freeze-drying treatment are easy to store for a long time, and can be restored to their pre freeze-drying state and maintain their original biochemical characteristics after adding water.
Key Features:

• The transparent door of the drying chamber is made of aviation acrylic material, which is non adhesive, high-strength and leak free. During operation, the material changes can be clearly observed.

• Brand compressor, stable and low noise.

• Brand vacuum pump, with high pumping speed and low noise.

• Standard oil mist filter, eliminating the toxicity of oil mist to the human body during vacuum pumping.

• Pre freeze-drying is carried out in situ, reducing the tedious operation of the drying process and achieving automation of the freeze-drying process;

• Silicone oil, as a circulating medium, has high temperature control accuracy and shelf temperature difference≤1℃,Uniform drying effect;

• The pre freezing temperature of the shelf is adjustable, controllable, exploratory, pilot and production process;

• storable1000Group program, each program can be programmed to set the pre freezing section and drying section, the freeze dryer can modify program parameters during operation, and record the drying curve and data;

• 7Inch touch screen operation,PLCIndustrial controller, displaying changes in drying curves and data;

• Square stainless steel tray, easy to operate and clean;

• User level and password can be set, and operation management can be decentralized;

• Configure an inflation valve that can be filled with nitrogen or inert gas for storage after drying.

• Freeze drying automatic control system:

• Board layer heating control system:

Thermal cycle protection, special heating material, fuzzyPLDControl algorithm.
The freeze-drying curve optimization control algorithm can control the vacuum degree value at the current stage of sample heating during sublimation and analytical drying stages.
Vacuum regulation system:

Vacuum degree adjustment is carried out during sublimation and analytical drying processes to avoid problems such as foaming of special substances, bottle blowing, and accelerated freeze-drying efficiency.
Adopting an industrial touch screen, it has good human-computer interaction, is simple and easy to understand, and can be operated easily without the need for instructions.
Manual automatic mode selection:

Manual mode is used to explore process parameters(Strong human intervention)Automatic mode is used in the mature stage of the process, with one click operation, simple and convenient.
Data recording system:

External storage(Uplate)Storage data volume andUThe capacity of the disk is related
PCDatabase storage, the amount of stored data is related to the available capacity of the computer's hard drive (optional).
Defrosting method:

Cold trap electric defrosting improves defrosting and safety through two control modes: temperature and time;
Calibration function:
Temperature and vacuum calibration can be performed to ensure the accuracy of long-term measurement values.
Freeze drying curve query function(Can query temperature and vacuum degree curves, convenient for process and freeze-drying effect verification).
Freeze drying endpoint judgment function
The warehouse body adopts 304 stainless steel doors, which are corrosion-resistant
Vacuum degree adjustment and pulse inflation valve
Cold trap water anti backflow suction system
Cold trap vacuum measurement
Automatic drainage system
Technical Specifications：
Model: LGJ-20F Regular Type
Dry area: 0.2 square meters
Number of partition layers: 2+1
Partition temperature range: -50 ℃ -+70 ℃
Partition temperature difference: ± 1 ℃ (at equilibrium)
Partition spacing: 100mm
Partition size: 300mm * 340mm
Cold trap temperature: ≤ -75 ℃
Overall power: 3500W
Whole machine weight: approximately 300kg
Water catching capacity: 6L
Liquid in tray: 2-3L
Defrosting: Electric defrosting
Ultimate vacuum degree: ≤ 5Pa (no load)
Cooling method: air cooling
Dimensions: 1100 * 760 (excluding doors) * 1300mm
Environmental temperature: ≤ 25 ℃