Introduction to High-Low Temperature Constant Circulator

A high-low temperature constant circulator is a prevalent device in laboratories. Its primary function is to maintain samples at the desired temperature steadily within a specific high-low temperature range through a constant temperature cycle, thereby meeting experimental requirements. The following introduction covering its principle, installation, and operation will help you use the device more proficiently.​

I. Principle​

During operation, the circulator's compressor compresses and cools the refrigerant, transforming it into a low-temperature liquid. Subsequently, the refrigerant evaporates into a gas in the heat exchanger, absorbing external heat and increasing in temperature. It is then depressurized via an expansion valve. This cycle repeats continuously to sustain the set constant temperature range.​

II. Installation​

Location Selection: Choose a well-ventilated and easily accessible area, ensuring that the device's vents remain unobstructed.​

Water Source Connection: Connect the inlet pipe to both the water source and the device's water inlet, ensuring unimpeded flow.​

Drainage Connection: Link the drain pipe to the device's drain outlet to prevent blockages.​

Power Connection: Plug in the power cord, confirm voltage compatibility, and then switch on the power.​

Temperature Setting: Set the high-low temperature range according to experimental needs and wait for the device to reach the target temperature.​

III. Operation​

Startup: Connect the power supply and water source, turn on the circulator, and set the temperature range and fluid flow rate.​

Sample Placement: Place the samples into the thermostat tank, ensuring no collisions occur with the tank.​

Temperature Adjustment: Adjust the temperature via the control panel and monitor it in real-time during experiments.​

Maintenance: Regularly clean the thermostat tank, replace the refrigerant periodically, and check the power cord and interfaces.​

High-low temperature constant circulators play a crucial role in modern experiments, ensuring accurate and reliable results. To ensure the device operates properly, it's essential to master the correct usage methods, follow the instructions strictly, and perform regular maintenance. Always prioritize safety during operation to avoid accidents.