high pressure sodium lamp is often a pretty higher luminous efficiency on the new electrical power source and its efficiency is usually up to 100 LM / W, high pressure sodium lamp is divided into two sorts of high pressure and reduced pressure high pressure sodium lamp. A discharge tube manufactured from a distinctive glass is made of a special glass inside the glass situation, as well as the tube is full of an ideal level of sodium, mercury drop and inert gas, the discharge tube as well as the glass shell are pumped into a vacuum to cut back the influence in the ambient temperature over the lamp.
Low strain high pressure sodium lamp amplitude injection soft yellow light, it could possibly be divided into two types of DC and AC, the luminous efficiency than incandescent lamp high in excess of 10 instances, can penetrate by the smoke, appropriate as lighting in place to smoke far more, also can do polarimeter, Polarimeter, refraction nowadays optical instruments this kind of as monochromatic light source, the lamp discharge tube common business growth and narrow the U form, the temperature to remain at all over 270 degrees, sodium vapour five Torr, so employing a coated with infrared reflective movie coat. And vacuum, so that you can minimize the discharge reduction. Sodium below 98 degrees is reliable, its vapor pressure is quite low, is not quick for making discharge arc, as a way to make the lamp commencing voltage reduction, in the discharge tube filled with neon, and mixed with less than 1% argon, though argon micro, but can make the lamp beginning voltage diminished by about 50%.
Due to the substantial temperature of the chemical reaction of sodium vapor is quite sturdy, may be corrosive to most sorts of glass. So the glass wall of the discharge tube is covered having a layer of sodium glass layer. Additionally the discharge tube may also be utilized with high temperature sodium will not reflect the translucent or transparent alumina ceramics manufactured from corundum. The fundamental construction of high pressure high pressure sodium lamp, mainly composed of filaments, bimetal thermal relay, discharge tube, glass shell, composition, place appliances manufactured from translucent polycrystalline alumina ceramic, filled with mercury and mercury sodium agent, can make incredibly high pressure mercury vapor, filament by a tungsten filament made spiral or woven in to the form of a certain level of alkaline earth metal oxides is often stored, once the heating filament, alkaline earth metal oxide emission of electrons. Double metal part is: once the lamp energy, the current by means of the ballast, thermal resistance, double sheet metal forming pathway, thermal resistance heating, double metal pieces, instantaneous electromotive force produced from the ballast that inert gas ionization discharge tube, temperature, mercury with gasification discharge, the sodium come to be gaseous discharge resulting from light supply, because of high pressure high pressure sodium lamp near to monochrome, shade is just not simple, so it truly is appropriate for your shade is not really too significant, but for the reason that of its substantial efficiency, about 2 times as high pressure mercury lamp, prolonged life of one thousand hrs, can ignite, not merely energy once more in one inside of minutes, by way of fog and robust capacity, so it’s broadly used square, station, airport, highway and so on.
