CH series low temperature and high temperature circulation system is a liquid circulation equipment that uses mechanical refrigeration to cool down and electric heating to heat up. It is generally divided into three parts:  Refrigeration system, heating system, control system, a single model can provide low and high temperature circulating liquid, widely used in pharmaceutical, chemical, biological, vacuum and other industries, for the reactor, test tank to provide cold source and heat source, can also be used for other equipment cooling and heating.  
The whole liquid circulation is closed with an expansion container. No matter whether the liquid circulation temperature is high or low, the thermal conductivity medium in the expansion container is close to room temperature. At low temperature, there is no absorption of water vapor, and at high temperature, there is no oil mist.  

Technical Parameters
Temperature range：-40～180°C
Temperature range：±0.5°C
Circulating flowrate：20L/min
Circulating pressure：1.2bar
Filling volume：13L
Cooling capacity：0.3~2.2kW
Heat capacity：3.5kW
Power requirement：220V 50Hz 4.3kW

Product Features
* Rapid cooling and heating, can continuously raise temperature.  
* Wide temperature control range, the whole process does not need to replace the thermal conductivity medium, thermal conductivity medium consumption is less.  
* Closed circulation of thermal conductivity medium, ensuring the safety and life of thermal conductivity medium.  
* High temperature precooling and refrigeration, can be directly cooled from high temperature.
* Refrigeration heat exchanger adopts brazed plate heat exchanger, small space, high heat exchange efficiency.  
* High temperature, emergency stop, leakage, over current, overheating and other multiple protection, fully ensure the use of safety.  
* High head design, to meet the long-distance transmission of thermal medium.  
* Liquid level direct display function, monitoring liquid level at any time, to avoid liquid shortage operation.  
* Optional alarm interface optional RS485 communication, easy to connect.  

Beijing Karaltay Scientific Instrument Co., Ltd. is is a professional manufacturing company specializing in the production of laboratory equipment. Our main products include: Accessories for XRF (fusion system, grinding mill and press machine, chillers), Consumables for UV/VIS spectrophotometer and AAS (glass cells, quartz cells, hollow cathode lamps and graphite tubes) and Consumables for HPLC&GC (solvent filtration apparatus, syringe filter, syringe, membrane, gas generator and etc) and other laboratory equipment (electronic, shaking incubator, ice maker, freeze dryer and etc.) .

Accessories-XRF

Press machine
Grinding mill
Fusion System
Water Chillers


Flake ice-maker and ice-maker；
Water Chiller,
low-temperature cooling circulator ；
low-temperature magnetic stirrer；
Vacuum freeze dryer；
high-speed cooling centrifuge；
Constant-temperature water bath and oil-bath；
Ultra-low refrigerator;

The water chiller has provided for laboratory equipment, for instance XRD, XRF, AAS, ICP, ESCA, TEM, MRI, MBE, MOCVD, Electron probe, Laser, Vacuum Brazing Furnace, Oxygen/Nitrogen Analyzer, Thermal simulation tester, etc.

The YKKY series water chiller adopts the integrated structure; the unit includes: water circulation system, refrigeration system, and electric control system. The unit has used the high efficiency condenser, a slow-speed fan, in did not reduce the refrigeration quantity in the situation to reduce the system noise effectively. The electrical control has provided perfect system protection and the fault indicator function, further reduced unit’s failure rate, simultaneously has provided conveniently for the diagnosis.

The YKKY series water chiller has perfect protection. The breaker makes the short circuit protection. The compressor, the water pump, the fan have the overflow protection; the compressor has the overpressure protection. The water chiller will stop automatically when low-level water in tank, water temperature is too high or too low. The compressor will stop automatically when refrigeration system pressure is too high.


Our experienced engineers can offer first-rank service and technical support for end-users and distributors.