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High pressure sodium lamp is really a pretty higher luminous efficiency with the new power supply and its efficiency is usually as much as 100 LM / W, high pressure sodium lamp is divided into two sorts of substantial strain and very low pressure high pressure sodium lamp. A discharge tube manufactured from a particular glass is made from a specific glass during the glass case, and also the tube is full of an proper volume of sodium, mercury drop and inert gas, the discharge tube and the glass shell are pumped right into a vacuum to reduce the influence from the ambient temperature about the lamp. Reduced strain high pressure sodium lamp amplitude injection soft yellow light, it can be divided into two varieties of DC and AC, the luminous efficiency than incandescent lamp substantial in excess of 10 occasions, can penetrate by way of the smoke, ideal as lighting in spot to smoke more, also can do polarimeter, Polarimeter, refraction currently optical instruments this kind of as monochromatic light supply, the lamp discharge tube basic business enterprise growth and narrow the U shape, the temperature to continue to be at all-around 270 degrees, sodium vapour 5 Torr, so applying a coated with infrared reflective movie coat. And vacuum, to be able to minimize the discharge loss. Sodium beneath 98 degrees is sound, its vapor pressure is very very low, will not be uncomplicated to make discharge arc, so that you can make the lamp starting up voltage reduction, in a discharge tube filled with neon, and mixed with less than 1% argon, even though argon micro, but could make the lamp starting up voltage reduced by about 50%.

Due to the high temperature of the chemical response of sodium vapor is extremely powerful, can be corrosive to most varieties of glass. So the glass wall with the discharge tube is covered having a layer of sodium glass layer. Moreover the discharge tube could also be used with large temperature sodium isn't going to reflect the translucent or transparent alumina ceramics made from corundum. The fundamental framework of substantial stress high pressure sodium lamp, largely composed of filaments, bimetal thermal relay, discharge tube, glass shell, composition, place appliances made from translucent polycrystalline alumina ceramic, full of mercury and mercury sodium agent, can make incredibly substantial strain mercury vapor, filament by a tungsten filament manufactured spiral or woven into the form of a specific volume of alkaline earth metal oxides may be stored, when the heating filament, alkaline earth metal oxide emission of electrons.

Double metal function is: once the lamp power, the current through the high pressure sodium ballast, thermal resistance, double sheet metal forming pathway, thermal resistance heating, double metal pieces, instantaneous electromotive force created through the ballast that inert gasoline ionization discharge tube, temperature, mercury with gasification discharge, the sodium turn out to be gaseous discharge resulting from light source, for the reason that of higher stress high pressure sodium lamp near to monochrome, shade just isn't easy, so it truly is suitable for your shade isn't also critical, but since of its higher efficiency, about 2 instances as higher stress mercury lamp, extended lifestyle of 1000 hrs, can ignite, not only energy once again in 1 within minutes, through fog and solid means, so it can be extensively made use of square, station, airport, highway and so forth.