Standards:

The test chamber complies with the following international and industry standards: JIS B 7753 (Daylight carbon arc lamp test for lightfastness and weather resistance) ISO 4892-4 (Plastics — Methods of exposure to laboratory light sources — Part 4: Open-flame carbon arc lamps) JIS A 1415 (Methods of exposing polymeric building materials to laboratory light sources) ASTM G23 (Standard practice for operating light-exposure apparatus with and without water for exposure of nonmetallic materials)

Applications:

The SI80 Carbon Arc Weathering Test Chamber is suitable for accelerated weathering evaluation of materials exposed to outdoor sunlight, indoor artificial light, or humid environments. Typical application scenarios include:

Performance verification during material research and development

Routine quality control in manufacturing processes

Comparative weatherability testing in independent laboratories

Compliance testing for standards-based durability assessment

Typical test specimens include, but are not limited to:

Plastics and polymer-based materials

Architectural polymer materials

Coated and uncoated non-metallic components

Materials sensitive to light-induced aging and moisture exposure

Product Information:

SI80 Carbon Arc Weathering Test Chamber is a laboratory weathering test system designed to evaluate the light resistance and weatherability of non-metallic materials under accelerated carbon arc exposure. By igniting carbon rods with alternating current to generate a stable arc light source, and combining optical filtering with controlled water spray, the chamber produces radiation energy higher than natural sunlight. This enables accelerated simulation of outdoor sunlight and rainfall conditions, allowing materials to be assessed efficiently for color change, aging, and physical property degradation caused by long-term environmental exposure.

Parameters

Features

Carbon arc light source produces irradiance higher than natural sunlight, enabling effective accelerated weathering evaluation

Integrated optical filtering system generates a spectral distribution comparable to solar radiation across multiple wavelength bands

Built-in water spray system allows simultaneous simulation of sunlight exposure and rainfall conditions

Stable arc voltage and current are maintained through automatic carbon rod movement control, ensuring test repeatability and data consistency

Accessories

(Carbon arc lamp assembly)

(Optical filter system)

(Automatic water spray device)

(Specimen rotating rack)

Test Procedures

Prepare specimens according to applicable standards and mount them evenly on the rotating specimen rack.

Set test parameters including black panel temperature, irradiation conditions, water spray cycle, and chamber humidity.

Ignite the carbon arc lamp and allow the system to stabilize to the specified operating conditions.

Conduct continuous exposure with or without water spray according to the selected test standard.

After completion of the test duration, remove specimens and evaluate changes in appearance and physical properties as required.

Maintenance Information

Regularly inspect carbon rods and replace them according to operating hours and consumption condition.

Ensure optical filters are clean and free from contamination to maintain correct spectral output.

Check water spray nozzles, pressure, and flow rate periodically to ensure uniform rainfall simulation.

Verify electrical connections and control systems to maintain stable arc voltage and current during operation.

FAQ

1. What type of weathering simulation does the SI80 Carbon Arc Weathering Test Chamber provide?

The SI80 Carbon Arc Weathering Test Chamber simulates accelerated weathering conditions by using a carbon arc light source that produces irradiance levels higher than natural sunlight. After passing through optical filters, the emitted light covers wavelength ranges similar to solar radiation. Combined with a controlled water spray system, the chamber can reproduce both sunlight exposure and rainfall effects, allowing materials to be evaluated for color fading, yellowing, and physical property changes under accelerated outdoor-like conditions.

2. How is the stability of carbon arc discharge ensured during testing?

The system maintains stable arc voltage and current by controlling the distance between the upper and lower carbon rods through an automatic drive mechanism. As the carbon rods are consumed during operation, the movement system continuously adjusts their position to keep the discharge parameters within the specified tolerance range. This design ensures consistent irradiance output and reliable test repeatability throughout long-duration exposure tests.

3. Which standards can be performed using this test chamber?

The SI80 is designed to meet the requirements of several recognized standards, including JIS B 7753. ISO 4892-4. JIS A 1415. and ASTM G23. These standards cover laboratory exposure methods for non-metallic materials using carbon arc light sources, with or without water spray, making the chamber suitable for standardized weathering and lightfastness evaluations.

4. What types of materials are typically tested with the SI80?

This chamber is commonly used for plastics, polymer-based building materials, and other non-metallic materials that may experience long-term exposure to sunlight, artificial light, and moisture. It is suitable for assessing changes in appearance and performance caused by environmental aging.