Test Principle
The ultraviolet rays of sunlight are the main factor who damage weathering resistance of most materials. We use UV lamps to simulate the short wave part of sunlight, it produce few visible lights and infrared lights. According to different testing requirements, we choose different wavelength UV lamps, this is because each type UV lamps produce different irradiance energy and wavelength. Generally speaking, UV lamps can be divided into UVA and UVB.
Different types fluorescent UV lamps are used in different fields, for example:
① UVA-340 Lamp: UVA-340 Lamp can highly simulate short-wave ultraviolet light of sunlight, the wavelength range is from 365 nm to 295 nm.
② UVA 351 Lamp: Simulates UV sunlight which has passed through the windows. It is excellent for testing materials aging process indoor.
③ UVB 313 Lamp: UVB-313 lamp emits stronger shortwave ultraviolet light compared with the ultraviolet rays on Earth, thus can accelerate material aging process. However, this lamp may cause some unrealistic material damage. It is mainly used in quality control, research and development, and the test of the materials with strong weather resistance.
BGD 855 & 856 UV Light Accelerated Aging Test Chamber （hereinafter referred as BUV）adopts fluorescent UV lamp as the light source. Its inner temperature and humidity can be properly controlled to obtain the periodic condensation on the sample for fully evaluating the damaged factor caused by sunlight, moisture and temperature (materials aging phenomenon includes fading, disluster, intensity reduction, cracking, flaking, chalking, and oxidation).
Fluorescent UV light can emulate the effect of sunshine, while condensation and water spray system can emulate the effects of rain and dew. During the test, radiation energy and temperature are controllable. A typical test cycle generally carries out under strong irradiation of UV light or in the dark and wet condensation period with 100% relative humidity. These tests generally applied in the fields of paint and coatings, automotive industry, plastic, wood, glue, etc…
■ Light Source: UV-A (wave length 340 nm) or UV-B (wave length 313 nm) ;
40W×8 pcs (The normal use-life is 6,000 hours)
■ The range of Irradiance: 0.3 W/m2~ 1.55 W/m2
■ Temperature Range：Black Panel temperature（BPT）：RT+10℃~80℃
■ Interior of cabinet：Stainless steel -SUS 304 material
■ Exterior of cabinet：Powder coating on SUS 304
■ Insolating Area：5,175cm2/828in2
■ Sample Capacity：48 pieces of standard specimen（75mm×150mm standard samples）or 15 pieces of 100mm×300mm
■ Adjustable range for water supply: 0-4LPM
■ Water Consumption：7L/day（for condensation）,3L/minute（for spray）
■ Overall Size：1,360mm×560mm×1,290mm（L×W×H）
■ Net Weight：161KG
■ Total Max. Power：2kW
■ Power：220VAC±10%/50HZ（60 HZ is custom）;10A ( Max Electric Current )
■ Ordering Information：
BGD 855---Basic Ultraviolet Light Accelerated Weathering Cabinet （No irradicance control）
BGD 856---Ultraviolet Light Accelerated Weathering Cabinet
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