How to ensure the stability of the light source in the UV aging test chamber?

Ensuring the stability of the light source in the UV aging test chamber is an important factor to ensure the accuracy of the test results. Here are some ways to ensure light source stability:

 

1. Regularly check the light source:
Regularly check the output power and spectrum of the light source, and compare with the specifications in the equipment manual. If it is found that the output power or spectrum of the light source changes, it is necessary to adjust or replace the light source.

2. Regularly calibrate the light source:
The output power of the light source will change with time, so it is necessary to calibrate the light source regularly. Calibrating light sources can be done using traceable light sources and photometers.

 

3. Clean the light source regularly:
The surface of the bulb of the light source may be covered with dirt such as dust and grease, which will affect the output power and spectrum of the light source. Therefore, the surface of the light source needs to be cleaned regularly to ensure the stability of the light source.

 

4. Regularly replace the light source bulb:
The light source bulb has a limited service life and needs to be replaced regularly. Usually, the life of the light bulb is stated in the instruction manual of the equipment, and it is recommended to replace it before the end of life.

 

5. Use a constant current source:
For light sources that require constant current, it is recommended to use a constant current source to drive the light source to ensure the stability of the output power.

 

6. Control the use environment of the test chamber:
The use environment of the test chamber may affect the stability of the light source. Therefore, when using the test chamber, it is necessary to control the use environment of the test chamber, such as temperature, humidity, etc., to ensure the stability of the light source.