A UV weather test chamber typically comprise of:
- UV Light Source: A UV Weather Test Chamber is equipped with UV lamps that emit UV radiation similar to that of the sun. Depending upon type of specimen and test standard we use UVA and UVB radiation tubes.
- Temperature and Humidity Control: This UV test chamber also controls temperature and humidity levels to create artificial environmental conditions. UV exposure combined with varying temperature and humidity can lead to accelerated degradation of materials; usually humidity is not controlled and only displayed on the screen. It is automatically generated 85% or higher.
- Sample Mounting Arrangement: Samples or specimen of the material being tested are placed inside the chamber. Corrosion resistant stainless steel sample holders are used on both sides front and rear sides are fitted. These sample holders hold the specimen in form of finished products, components, coatings, textiles, plastics, or any other material that needs to be evaluated for its UV resistance.
- Exposure Test Cycles: The UV Weather chamber runs exposure test cycles that simulate different environmental conditions including alternating periods of UV radiation, darkness, and controlled temperature and humidity changes. The duration of the test can vary based on the material and the level of acceleration desired and test standards.
- Monitoring and Evaluation: During the test, various parameters are monitored, such as UV intensity, temperature, humidity, and exposure time. After the test, the samples are evaluated for changes in color, gloss, surface integrity, mechanical properties, and other relevant characteristics. This helps determine how well the material withstands UV exposure over time.
In UV ageing test chambers ultraviolet radiation is created by UV lamps, dew and rain impact are created by forced condensation and heat is generated by heating elements. UV lamps are available UVA (340nm) or UVB (313nm) as per test requirement. For water spray, there are nozzles that work with motor pump. Controlling function is completely programmable; for this purpose, we use 7-inch color screen controller. It allows you to do settings of temperature, light and water spray test along with time. Overall construction is made of stainless steel 304. In order to keep samples, there is a perforated tray, which is height adjustable. In addition to standard model of UV Test Chamber, we also make customized chamber to meet specific requirement of customer. We carefully design each UV Weather Resistance Test Chamber to let you experience trouble free working performance. We supply these chambers throughout India and export at competitive price.
TECHNICAL SPECIFICATIONS
Model | STXUVA240F | STXUVA240T |
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Design type | Flat type | Tower type |
Sample placement | Samples placed on a flat shelf | Samples placed on vertical fixtures through round clamps |
Sample Holder | No requirement; samples placed on the flat shelf only | 75 x 290 mm (L x W) |
Inner size | 1150 x 500 x 500 mm (W x D x H) | 1170 x 400 x 500 mm |
External size | 1350 X 600 x 1560 mm (W x D x H) | 1350 X 550 x 1500 mm (W x D x H) |
Test standards comply | ASTM G154/G53, ASTM D4329, ASTM D4587, AATCC 186, SAE J2020, JIS D 0205, ASTM C-1442, ASTM D-904, ASTM D-5215 | |
Temperature range | Ambient+10°C to 70°C | |
Temperature sensor | PT100 | |
Temperature uniformity | ±1°C | |
Temperature fluctuation | ±0.5°C | |
Testing time | 0 to 999 Hours | |
Construction | Stainless steel 304 | |
Humidity range | ≥ 90%RH (Not controlled; only display) | |
Controller |
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UV lamp location | Top | Front & Rear sides |
UV Lamp power | 40W / per lamp | |
UV Lamp quantity | 8 Nos. | |
Test cycle setting | Illumination, condensation and water spray test cycle is programmable | |
Irradiance | 0 - 2.0 w/cm2 Adjustable | 0 - 1.0 w/cm2 Adjustable |
Ultraviolet light | UV-A: 315-400nm OR UV-B: 280-315nm 1300h lifetime, length: 120 cm |
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Distance between lamps | 70mm | |
Distance from samples to lamp | 50 ±2mm | |
Standard Specimen Size | 75×150mm or 75×290mm | |
Water spray | Spray Nozzles | |
Water spray mechanism |
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Air circulation | Blower assembly with duct | |
Protection system |
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Power | 220V 50Hz |