This series of products adopt the latest international advanced CFC-free refrigeration system. It is designed 
to meet the requirement for the precision of constant-temperature in the institutes relating to reasearch, 
biology, physics, medicine, chemical industry and other departments. The products possess some feature: 
keeping the temperature uniform within the tank and making more precise temperature-control.The products 
can also be used as ordinary thermometers, or other temperature-measuring instruments for
norm-fixing in temperature-instrument manufacture.
 
Main Features:        
 
● Digital Resolution:0.01℃、0.001℃ Optional
● Temperature Stability:±0.002~±0.02 Optional
● Temperature Range:-40-300℃ adjustable
● Adopted CFC-free refrigeration hermetic compressor technology, energy saving
● With a power-off protection function, automatically delayed for three minutes
● Using a large screen display ,easy to understand working conditions
● With a circulating pump, can be established the second constant temperature field outsid
     the tank or cooling experimental device outside the tank
● High-quality hermetic compressor cooling system with overheating, automatic
    overload protection
● Intelligent PID automatically adjust control function
● Upper and lower temperature alarm can be set
● Inner made by high quality stainless steel material
● Deviation of the temperature measurements can be amended, temperature display
    accuracy is up to 0.01℃, or 0.001℃
 
Main Technical Parameters:
 
    
        
            |   Model | Temp. Range (℃)   | Temp.  Stability (℃)   | Display  Resolution (℃) | Volume (mm) | Depth(mm) | Pump Flow(L/min) | Top Opening  Dimen(mm) | Drain | NW (kg) | Packing  Size(mm) | 
        
            | GDH-1020 | -10~100 | ±0.005~±0.02 | 0.01/0.001 | 280×250×280 | 280 | 6 | 235×160 | √ | 36 | 460*430*940 | 
        
            | GDH-0530 | -5~100 | ±0.005~±0.02 | 0.01/0.001 | 400×325×230 | 200 | 6 | 310×280 | √ | 80 | 618*540*1090 | 
        
            | GDH-1030 | -10~100 | ±0.005~±0.02 | 0.01/0.001 | 400×325×230 | 200 | 13 | 310×280 | √ | 80 | 618*540*1090 | 
        
            | GDH-2030 | -20~100 | ±0.005~±0.02 | 0.01/0.001 | 400×325×230 | 200 | 13 | 310×280 | √ | 85 | 618*540*1090 | 
        
            | GDH-3030 | -30~100 | ±0.005~±0.05 | 0.01/0.001 | 400×325×230 | 200 | 13 | 310×280 | √ | 90 | 618*540*1 |