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Lijia Small Classroom: Introduction to the Principle of [Constant Temperature and Humidity Testing Machine]

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Release date: 2019-06-21

Constant temperature and humidity test chamber by temperature regulation(heating, refrigeration) and humidification of two parts. Through the rotating fan installed at the top of the box body, air is discharged into the box body to realize gas circulation and balance the temperature and humidity in the box body. The data collected by the temperature and humidity sensors built in the box body are transmitted to the temperature and humidity controller (micro information processor) for editing and processing, and the temperature and humidity control instructions are issued, which are jointly completed by the air heating unit, the condenser tube and the heating and evaporation unit in the water tank.

The temperature regulation of the constant temperature and humidity test chamber is to collect data through the built-in temperature sensor, adjust by the humidity controller (micro information processor), turn on the heating element of the water tank, and increase the humidity in the box body or adjust the refrigeration solenoid valve by evaporating the water in the water tank to realize the dehumidification effect, so as to achieve the humidity required for control.

The constant temperature and humidity box is equipped with multiple protection measures; The temperature system is equipped with an over-temperature protector under the condition that the safe allowable temperature can be set, and the air heating element can automatically cut off when the rotating fan stops. The humidification system can stop power supply as the water level of the humidification tank decreases. The refrigeration system also stops with the increase of the cabinet temperature (over 40 ℃) or humidity.Machine

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