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Zhejiang Ruixiang Lighting Co.,Ltd.




Address:No.7,Yuansan Road,Ecological industrial Park,Kaihua County

  • How does the UV lamp work?
  • date: 2019-1-19 hits:198 
  • Ultraviolet light is generated in a mercury discharge tube: an inert gas in which mercury vapor is suspended, and a quartz tube containing two electrodes and an insulator. Mercury reaches its highest point at 254 nm, 310 nm and 366 nm, producing radiation between 200 and 400 nm. Quartz cuts off the lower wavelength and does not transmit any radiation below 230 nm. Each atom consists of a nucleus, surrounded by many electrons floating in a fixed orbit. By adding energy (electrical) electrons are brought in a higher orbit. Each element shows a trend back to its original state. The electron will retreat in its previous orbit: Excessive energy is emitted as a photon. The most commonly used UV lamps are made by pressing a dielectric mercury arc lamp or an MPMA lamp. It can be produced in lengths from a few millimeters to over 2 meters. The life of these lamps varies from 1000 to 2500 hours. The tube is made of quartz because it is the only material that transmits ultraviolet light and at the same time tolerates a high temperature of 6 to 800 °C. The tube will have a little expansion and does have a high melting point temperature (1100 ° C). The electrodes are made of tungsten: the process of producing them is extremely complicated. Tungsten is used because the temperature of the curve can rise above 3,000 °C. A molybdenum plate is used to connect the electrodes and wires, which can be expanded together with quartz. And still can withstand high voltage when heated. The lamp is finally suspended to a ceramic (or other) insulator. Because the supply current is often not enough to power a MPMA lamp, the UV lamp typically uses a transformer.
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