How much do you know about the function of the constant temperature and humidity test chamber

 Today, let’s take a look at the function of the constant temperature and humidity test chamber.

1. Heating system: Compared with the refrigeration system, the heating system of the constant temperature and humidity test chamber is relatively simple. The heating system of the test chamber has high power, and there is a heater on the bottom plate of the test chamber.

2. Refrigeration system: The refrigeration system is one of the key components of the function of the constant temperature and humidity test chamber. The refrigeration system consists of two parts, a high temperature part and a low temperature part, each of which is a morbid refrigeration system.

3. Control system: The control system is the core of the function of the constant temperature and humidity test chamber, which determines the temperature rise rate and accuracy of the test chamber and other important indicators. Most current controllers adopt PID control.

4. Humidity system: The temperature system is divided into two subsystems: humidification and dehumidification. The humidification method generally adopts steam humidification, that is, low-pressure steam is directly injected into the test space for humidification. There are two dehumidification methods: mechanical refrigeration dehumidification and dry dehumidification.

5. Air circulation system: The air circulation system is generally composed of a centrifugal fan and a motor that drives its operation. It provides air circulation in the constant temperature and humidity test chamber.

6. Sensor system: The sensors in the function of the constant temperature and humidity test chamber are mainly temperature and humidity sensors. Platinum batteries and thermocouples are widely used as temperature sensors. There are two methods for measuring humidity: dry and wet bulb thermometer method and solid electronic sensor direct measurement method.