Correct operation procedures and precautions for the Desktop xenon lamp aging tester

Xenon arc weathering test chambers are accelerated aging test equipment that simulates natural sunlight, rain, and dew. They are widely used in industries such as automotive, coatings, plastics, and textiles to evaluate the weatherability of materials. Proper operation procedures and standardized maintenance methods are crucial to ensuring accurate test results and longevity. This article will detail the operating procedures and precautions for xenon arc weathering test chambers.

Operational Procedure

Pre-Test Preparation

Check the equipment status: Confirm that the test chamber's power supply and water supply (if a spray function is required) are properly connected, and that the xenon lamp and filter are intact.

Sample Placement

Samples should be placed evenly on the sample rack, avoiding blocking the light source or overlapping.

Ensure that the distance between the sample and the xenon lamp complies with the test standard (such as ISO 4892-2. ASTM G155. etc.).

Parameter Settings

Set the irradiance (typically 0.35-1.50 W/m² @ 340nm), chamber temperature (typically 50-70°C), black panel temperature (typically 5-20°C higher than the chamber temperature), and humidity (e.g., 50% RH) according to the test standard.

If a spray cycle is required, set the spray time (e.g., 18 minutes spray/102 minutes dry).

Start the Test

Close the chamber door, start the equipment, and observe whether the xenon lamp is ignited properly.

Monitor the initial data to ensure that the temperature, humidity, and irradiance remain stable at the set values.

Record the initial time and regularly check the sample condition (e.g., discoloration, chalking, cracking, etc.).

Test Completion

After the test is complete, turn off the xenon lamp and wait for the chamber to cool before removing the sample.

Perform performance evaluation on the sample (e.g., color difference, gloss, and mechanical properties).

Clean the interior of the test chamber to prevent residual sample from affecting the next test.

Precautions

Safe Operation

Avoid looking directly at the xenon lamp light source: Xenon lamps emit strong ultraviolet light, so wear protective glasses.

Preventing Burns: The chamber temperature is high during the test, so wear heat-insulating gloves when removing and placing samples.

Electrical Safety: Ensure the equipment is well grounded and avoid operating in humid environments.

Equipment Maintenance

Replace the xenon lamp regularly: The xenon lamp life is typically 1000-2000 hours. Exceeding this life may result in insufficient irradiance.

Filter Cleaning: Check and clean the filter monthly to prevent dust from affecting the spectral distribution.

Check the spray system: Prevent nozzle blockage and ensure uniform spraying.

Test Optimization

Avoid over-testing: Prolonged high irradiance may cause unnatural aging. Adjust the test cycle based on material properties.

Standard Reference: It is recommended to use a standard reference sample for each test to ensure data comparability.