How to display and control the humidity in the constant temperature and humidity test chamber

In the performance index of constant temperature and humidity test chamber, there are often major parameters of environmental humidity control category and environmental humidity capacity. How does the environmental humidity in the constant temperature and humidity test chamber display information and operate?

The key of environmental humidity control is composed of refrigeration unit, temperature sensor, air humidifier and dehumidifier.

The refrigeration unit is a key part of the constant temperature and humidity test box, and the key to temperature reduction is the coordination of several components, including refrigeration compressor, cooler, throttling device and air conditioner evaporator. Among them, the refrigeration compressor is the cardiovascular system of the refrigeration unit. It absorbs ultra-low temperature bottom pressure vapor and becomes ultra-high pressure vapor. According to the cold suspicion, it releases heat into liquid, and according to the centrifugal fan, it takes away heat. Therefore, the lower side of the constant temperature and humidity test box is the reason for warm air. Then, according to the throttle valve, it becomes the bottom pressure liquid. Next, according to the air-conditioning evaporator, it becomes the ultra-low temperature bottom pressure vapor zui and returns to the refrigeration compressor; The refrigerant in the air conditioning evaporator digests and absorbs the calorific value for the whole process of vaporization, and then digests and absorbs the calorific value, which exceeds the refrigeration target, and then conducts the whole process of temperature reduction in the constant temperature and humidity test chamber.

The humidifier of constant temperature and humidity test chamber is based on the whole process of heating water into steam by electric heater; Conduct the humidifier target of the constant temperature and humidity test chamber.

The dehumidification of the constant temperature and humidity test box is carried out by the refrigeration unit. The air conditioning evaporator is placed in the three constant tester, and the high and low temperature vapor in the constant temperature and humidity test box is cold and cold; In this way, the humidity in the high body of the continuous box is very little, exceeding the goal of dehumidification.

The humidifier and dehumidifier of the constant temperature and humidity test chamber recognize the environmental humidity according to the temperature sensor, and then transmit the information to the operating instrument panel, which automatically controls the operation of the system according to the command.