The constant temperature and humidity test chamber is an essential testing equipment in the fields of aviation, automotive, home appliances, scientific research, and other fields. It is used to test and determine the parameters and performance of electrical, electronic, and other products and materials subjected to high temperature, low temperature, humidity, or constant temperature environment changes. It is mainly used to be divided into "desktop" and "vertical" according to test requirements and standards, with the difference being the temperature and humidity that can be achieved, Vertical models can handle low temperatures and drying below room temperature, while desktop models can only handle temperatures and high humidity above room temperature.
1. Check the water level in the water tank, clean the water storage bottle, and then fill it with water. Place a rubber hose on the faucet to prevent the humidifier from clogging up due to scale and sedimentation, using distilled water as the water source.
2. Set the temperature or temperature humidity selection panel to the required position and turn on the instrument power switch.
3. Loosen the temperature adjustment cap on the head of the dry bulb conductivity meter to set the temperature above the required temperature value for the test. The conductivity meter is a control instrument, and the scale is for reference only. The accurate temperature should be based on a dry bulb thermometer.
4. Start heating and turn the power selection switch to the "2" position. Wait for the temperature inside the chamber to rise to the desired temperature, and then turn the selection switch to the "1" position to reduce the fluctuation of the constant temperature.
5. Adjust the temperature of the water tank to control the humidification amount. Generally, the temperature of the water tank is set at 1-2 ℃ below the temperature of the working room. Once the temperature and humidity of the working room and the water tank reach the required values, temperature and humidity adjustment can be carried out.
6. After normal operation, install the test piece for maintenance.
7. After use, disconnect the power supply, remove the rubber hose from the back of the chamber, and perform water removal and maintenance.