The constant temperature and humidity test chamber is a device that places the product within the specified temperature and humidity to detect the high, low, humidity and long-term constant resistance of the product. If you need to test a lot, you can buy a programmable constant temperature and humidity test box for convenience.

The key to controlling whether the constant temperature and humidity test chamber is heated is the heating tube. It is the controller that outputs the output voltage to the relay when the controller obtains the temperature increase command, and about 3-32V DC is added to the solid state relay; its AC terminal is relative to the connecting wire. The contactors are also attracted together, and there is voltage at both ends to make them heat. The heat is brought into the box by the circulating fan, which makes the constant temperature and humidity test chamber heat up, when the temperature is about to reach the set value; adjust the output by adding it to the solid state relay PID Controller; we can intuitively see the heater output rate on the control panel of the test chamber.

The important function of the test box is refrigeration, which is an important reference index for determining the performance and configuration of a constant temperature and humidity box. It consists of a compressor, a spiral high-efficiency refrigerant copper tube in the condenser, a corrugated fin evaporator, and a drying filter. The oil separator, solenoid valve and other components are used. The humidification system uses an external boiler. The steam humidifier has energy saving and consumption reduction functions, which can save 70% of energy consumption; it is the process of the humidifier heating water into steam to achieve constant temperature and constant humidity The purpose of the box humidification. In addition to refrigeration, the compressor also has a dehumidification function, and the purpose of dehumidification is achieved by controlling the refrigeration system.

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