What temperature control capabilities does a thermostatic test chamber offer? A constant temperature and humidity test chamber is designed to simulate specific environmental conditions, allowing products to be tested for their resistance to high temperatures, low temperatures, and humidity. As a result, the constant temperature and humidity chamber is equipped with functions such as heating, cooling, humidifying, and dehumidifying, making it a versatile tool for various testing applications.
Cooling is a crucial component of a constant temperature test chamber, and it plays a significant role in determining the overall performance of the system. The cooling process involves four main components: the compressor, condenser, throttling device, and evaporator. The compressor acts as the heart of the refrigeration system, drawing in low-temperature, low-pressure gas and compressing it into high-temperature, high-pressure gas. This gas then releases heat through the condenser, turning into a liquid. The cooled liquid passes through the throttling device, reducing its pressure, and enters the evaporator, where it absorbs heat from the surrounding air, turning back into a low-temperature, low-pressure gas before returning to the compressor.
The heating system is essential for raising the temperature inside the test chamber. When the controller receives a heating command, it sends a voltage signal (typically 2–13 VDC) to the solid-state relay. This activates the relay, which in turn energizes the contactor, applying voltage to the heater. The heat generated by the heater is then circulated throughout the chamber via a fan, allowing the temperature to reach the desired set point quickly. The controller uses on-off regulation through the solid-state relay, and users can adjust the heat output directly from the control panel.
For temperatures above 89°C, the system primarily relies on the heating function. However, for precise temperature control below 89°C, the system balances both heating and cooling. The solid-state relay generates controlled heat, while the compressor-driven refrigeration cycle provides cooling, creating a dynamic equilibrium that maintains stable temperature conditions within the chamber.
Dehumidification is also achieved through the refrigeration system. The evaporator, located inside the chamber, is kept at a lower temperature. When high-humidity air comes into contact with the cold surface of the evaporator, moisture condenses into liquid, effectively removing humidity from the air. This process helps maintain the desired humidity level inside the chamber.
HUMGINE offers a wide range of environmental testing equipment, including high and low temperature humidity test chambers, constant temperature and humidity chambers, nitrogen-filled vacuum ovens, high-temperature vacuum drying ovens, low-temperature test boxes, vacuum degassing chambers, AB glue degassing machines, and drying cabinets. These products are ideal for industries requiring rigorous environmental testing and quality assurance.
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