ultra low temperature cooling and heating circulating bath

Features of Ultra Low Temperature Cooling and Heating Circulating Bath

1. Intelligent refrigeration regulation technology: adopts stepping motor to drive the hot gas bypass valve, together with dynamic PID temperature control system, to realize the meticulous regulation of refrigeration capacity, avoiding fluctuation brought by over-cooling or repeated start-stop.
2. Multi-temperature zone selection: the temperature options cover from -20°C to -48°C, to meet the needs of different experiments or processes for low temperature.
3. Strong liquid circulation capacity: equipped with high-performance multi-stage immersion pump, output pressure up to 2bar, flow rate of up to 30L/min, to ensure rapid and stable flow of heat transfer medium in the system.
4. Double safety protection mechanism: with the upper limit of temperature and liquid level detection function, automatically cut off the heating/cooling operation, to protect the safety of equipment and experimental media, suitable for the use of flammable liquid temperature control.
5. Global electrical compatibility: support for different countries and regions (including Europe and the United States, Japan, etc.) power supply specifications and frequency, suitable for export and multi-country deployment.
6. Expandable: provide RS232/RS485 communication interface, easy to connect to the host computer system or integrated into the automation control platform, but also supports external temperature probe and a variety of adiabatic piping options.
7. Dual-channel temperature display: the screen displays the set value and measured value at the same time, and you can switch to view the internal tank temperature and external process point temperature in real time.

Advantages

1. Strong control of ultra-low temperature: compared with conventional hot and cold bath, this equipment can easily cover the temperature region required for deep cooling experiments, is the preferred equipment for cooling rate and temperature stability.
2. Wide adaptability: support for internal/external circulation dual-use, not only for sample thermostat in the tank, but also remote temperature control of the reaction system, analytical instruments.
3. Excellent safety performance: designed for process scenarios containing volatile or combustible media, effectively avoiding risk factors during operation.
4. Intelligent operation: combining electronic logic protection and precision mechanical control, realizing fully automatic operation, abnormal self-test and remote communication control, reducing human intervention.

Working Principle

The ultra low temperature cooling and heating circulating bath consists of heating module, compressor refrigeration system, hot gas bypass regulation system and liquid circulation pump. The refrigeration circuit adopts the hot gas bypass valve regulated by stepping motor, which can dynamically control the refrigerant flow according to the actual temperature demand, thus improving the refrigeration stability and energy efficiency. The thermostat senses the medium temperature through a high-sensitivity probe and adjusts the cooling and heating power in real time. Liquid medium (e.g. ethanol, silicone oil, etc.) forms a closed loop driven by a circulation pump to realize heat exchange between the controlled system and the circulation bath.

Application Fields

1. Material science: suitable for material property testing, glass transition temperature determination, low temperature fatigue testing under low temperature conditions.
2. New energy & battery R&D: for lithium batteries, hydrogen fuel cell packs for thermal shock experiments and constant temperature cycle test.
3. Chemical and pharmaceutical synthesis: to maintain the stability of the reaction under deep cold conditions, to prevent side reactions or thermal runaway, suitable for low-temperature synthesis reaction.
4. Supporting analytical instruments: used for mass spectrometer, cold trap, spinning, condenser and other equipment temperature control, to enhance detection accuracy and operational safety.
5. Aerospace and electronic components testing: cold start performance testing of components, thermal cycling aging test to ensure reliability.