The liquid circulation is airtight that with expansion container, the expansion container and the liquid circulation are adiabatic, and not mix with liquid circulation, just the connection of machinery, no matter the temperature is high or low of liquid circulation, the medium of the expansion container is below 60 degrees. 

The whole liquid circulation is airtight system without moisture absorption at low temperatures and without oil mist at high temperatures. Thermal Oil can achieve a wide working temperature; There isn ' t use solenoid valve in the whole circulation system.

MODEL FEATURES
• Wide working temperature range with the heating and cooling function, the max temp can reach -30 to 200 degrees.
• The controller with 2 LED displays,can be display the set value, actual value and over temperature alarm value of temperatures.
• High efficient and fast, easy to fill liquid.
• To ensure rapid cooling in the high temperature circumstances, can achieve continuous temperature control of 200 to -30 degrees.
• All airtight process of circulation management without oil mist and water absorption condition to make sure the safety of test and the life of thermal fluid.
• Cooling unit of Emerson compressor wheel, circulating pump with stable and reliable quality; 
• Have a variety of security features of self-diagnostic, refrigerator overload protection, high pressure switch , overload relays and thermal protection device.
• Control the temperature of thermal medium, use the same thermal medium at the whole increasing and decreasing temperature process.
• High lift design to satisfy that conveying thermal medium with long distance.