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UV light in sunlight and diffuse sky radiation can cause alterations in the surface of materials which, accelerated by other climate factors such as temperature and humidity, lead to the typical symptoms of ageing. Staggered simulations of natural weathering in devices always requires a restriction of the number of climate values or their cyclic alterations. The Weiss Technik UV Test Chamber is an environmental simulation chamber that carries out UV light accelerated weathering tests on products and their materials.
In other test procedures, too much attention is paid to the simulation of the entire global radiation and the simulation of other important climate factors is neglected. However, it is also important that temperature conditioning and humidification are controlled in a reproducible manner and that the air is humidified without aerosols. Moreover, any uncontrolled overheating on account of the radiant heat of the lamps has to be prevented. Test procedures according to DIN EN ISO 4892-2 prescribe, for example, the simulation of the overall range of global radiation, the disadvantage of which is that the influencing factors of specimen temperature and humidity or their cyclic alterations can only be controlled very vaguely. In test procedures with fluorescent lamps according to DIN EN ISO 4892-3, only the simulation of the photochemically effective spectral range ≤400 nm (UV-A and UV-B radiation) is prescribed. This means we dispense with radiation heating of the specimens but gain the possibility of climate conditioning the test specimens in the entire natural temperature and humidity range in a precise and reproducible manner. Within the UV irradiation test chamber, radiation is effected with special fluorescent lamps in the wavelength range from 290 nm to 450 nm.
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Weiss Technik are a market leading environmental test chamber manufacturer. The UK team are on hand to help you find a solution for your business from our wide range of climatic test chambers and environmental simulation systems. You can download our product range brochures from Multimedia Center. All Weiss Technik environmental test chambers have possibility to use our innovative WEBSeason® user interface that allows you to program, control and monitor your tests within the chamber for ease of use. Our unique S!MPATI® software is also available to install. Installation and operating manuals for both software programs can also be found in the Multimedia Center.
We also offer OEM environmental test chamber servicing, calibration and maintenance from our UK-based service team. Find out more about service and maintenance contracts. For immediate shipping on test chambers and cabinets, take a look at our in-stock environmental simulation chambers.