There are 24 suppliers who sells sodium lamp ignitor working on, mainly located in asia. Lighting system bureau of energy efficiency 153 syllabus lighting system. Principle of working of a sodium vapour lamp answers. Sodium vapour lights are a type of gasdischarge lamp. A copy of the license is included in the section entitled gnu free documentation license. The arc tube consists of frame and is highly pressured with sodium for better efficiency. It is a gasdischarge lamp that uses sodium in an excited state to produce light. The lamp produces a clarity of light that creates vivid color from objects illuminated by it. The operation of a highpressure sodium lamp is illustrated in the diagram on the right. Find here online price details of companies selling sodium lamps. In the case of sodium the light stems from a sharp line at about a wavelength of 590 nm which appears yellow to the human eye. They are commonly used in public parking lots, roadways, and other security areas. Hot restart occurs when the arc tube has cooled a sufficient amount. For an easy start up, small amounts of neon and argon gases are also present along with sodium gas inside the glass.
A lot of pharmaceutical products are light sensitive those degrade when directly exposed to the light. Mar 10, 2020 highpressure sodium lamps also known as hps lamps or hps lights are a type of sodium lamp that is widely used in industrial lighting and many public outdoor areas. Apr 21, 2006 diagram of a high pressure sodium lamp. Light source, choice of lighting, luminance requirements, and energy conservation avenues 8.
Components the arc tube contains the xenon and sodium mercury amalgam mixture and provides. Lumalux super and sox lamp ratings are based on measurements at constant input voltage. The halogen lamp has an instant on ability unlike mercury vapor or high pressure sodium, therefore they work well for security lamps that are activated by motion sensors. Troubleshooting high pressure sodium lights hunker. Once the neon lamp has reached breakdown, it can support a large current flow. Difference sodium vapour lamp mercury lamp light source works by electric discharge passage of electricity through sodium vapours at highlow pressure works through the.
A lowpressure sodium vapour lps lamp contains an inner discharge tube made of borosilicate glass that is fitted with metal electrodes and filled with neon and argon gas and a little. High pressure sodium lamps are the most efficient artificial white light source with about 29% of the energy used by the lamp producing light. High pressure sodium vapour lamps with a polycrystalline translucent aluminum oxide discharge tube enclosed in an ovoid or tubular outer glass envelope. The lamp operates at a temperature of about 300c and in order to conserve the heat generated and assure the lamp operating at normal air temperatures the discharge envelope is enclosed inspe cial vacuum envelope designed for this purpose. The sodium lamp how it works and history edison tech center. As the name says this type of lamp uses sodium or mercury vapor in an excited state to produce light. Even though there may be room in low pressure sodium technology to extend its lifetime further, manufacturers can earn greater revenues with more modern light source technologies and for commercial reasons it is no longer interesting to invest effort in the further improvement of the low pressure sodium lamp. Sodium vapour lamp, electric discharge lamp using ionized sodium, used for street lighting and other illumination. An amalgam of metallic sodium and mercury lies at the coolest part of the lamp and provides the sodium and mercury vapor in which the arc is drawn. In this case a sodium vapor lamp or a mercury vapor lamp is used. About 51% of these are high pressure sodium lamps, 10% are flood lights, and 15% are ballasts. A mercury vapour lamp in in the blue end of the light spectrum. The presence of neon gas serves to start the discharge envelope is usually bent into u shape.
Sont son high pressure sodium philips philips lighting. High pressure lamps have more components than low pressure and contain other substances such as mercury. Most of highpressure sodiumvapor lamps also contain mercury to improve the startup behavior and to increase the lamp voltage as. With an efficacy of 100, the hps lamp is a costeffective light source.
What is the role of connecting a transformer with sodium. The gas in this case is sodium vapour, but several other gases may be such as mercury, ne. Typically these lights are used on sides of industrial buildings and in some street lamps. Dec 10, 2015 sodium vapour lights are a type of gasdischarge lamp. Training module 1hour version for generators and handlers of fluorescent and mercurycontaining lamps and ballasts training required by the universal waste rule prepared by. Sodium vapour lamp an architect explains architecture. The first ushaped positive column lamps were put on the market in 1932, a very busy year in which three generations of sodium lamp were introduced and promptly superseded. They were known as type soh, so denoting sodium vapour and the h implying that the lamp had to be burned horizontally. The mercury vapour lamp in construction is similar to sodium vapour lamp. Highpressure sodiumvapour hps lamps have an inner discharge tube made of translucent alumina that can withstand the corrosive effects of a mixture of. Our organization is offering sodium vapor lamp to our clients.
High pressure sodium lamps or hps lamps electrical4u. Low pressure sodium vapor lamps use a neon penning mixture for warm up and can be operated as giant neon lamps if operated in a low power mode. The sodium is mixed with other impurities to create a more white light. Metal halide, mercury vapor, selfballastedmercury lamps and highpressure sodium lamps all are high intensity discharge lamps. What are the different types of lights in lighting system. Aug 28, 2016 i think you are talking about ballastchoke. Aug 30, 2005 i dont quite understand the explanation at wiki. View detailed import data, price, monthly trends, major importing countries, major ports of sodium light under hs code 8539. The heat generated by the arc then vaporizes the mercury and sodium. These lamps ma type are manufactured in 250 and 400 w ratings for use on 200250 v ac supply. Mar 15, 2020 a fluorescent lamp has changed over electrical energy into useful light energy to a great deal more proficiently than incandescent lamps.
Difference between sodium vapor lamp and mercury lamp gktoday. It can come in a high pressure or low pressure format. About 60% of these are ballasts, 3% are grow lights. Basic operation in a high pressure sodium lamp, a compact arc tube contains a mixture of xenon, sodium and mercury. These lamps are highly demanded among our clients due to their superlative features such as greater illumination, high efficiency and weather resistance. The arc then heats up the mercury and the mercury vapor then lights, giving the lamp a bluish color. This is because most of the light emitted from a sodium vapour lamp is concentrated in the yellow part of the visible spectrum around 580590 nm. They have an efficiency of up to 190 lumens per watt compared to an incandescent street lamp which has between 15 and 19. Fluorescent lamp and working principle of fluorescent lamp. With both types of lamps, they do not give a good accurate true colour rendition of the object that they shine on as compared to daylight. Mercury vapour, at high pressure, is filled inside a glass.
A sodiumvapor lamp is a gasdischarge lamp that uses sodium in an excited state to produce light at a characteristic wavelength near 589 nm. Get info of suppliers, manufacturers, exporters, traders of sodium lamps for buying in india. The construction and applications of sodium vapour lamps. Sodiumvapour lamp definition of sodiumvapour lamp by the. May 22, 20 although sodium vapour lamps produce much higher light output about 90 lumenswatt they cannot be used in lighting applications where colourrendering property is very crucial. His work was a commercial success and eventually his company and patents were bought out by general. High pressure sodium lamps lighting associates, inc. The top countries of supplier is china, from which the percentage of sodium lamp ignitor working supply is 100% respectively. A mercuryvapor lamp is a gas discharge lamp that uses an electric arc through vaporized mercury to produce light. Import data and price of sodium light under hs code 8539 zauba. Permission is granted to copy, distribute andor modify this document under the terms of the gnu free documentation license, version 1.
Still has a bad color rendering compared to metal halide and halogen lamps. The life of a halogen lamp is shortened by frequent on and off cycles. A sodium vapor lamp is a gasdischarge lamp that uses sodium in an excited state to produce light at a characteristic wavelength near 589 nm two varieties of such lamps exist. Sodiumvapour lamp, electric discharge lamp using ionized sodium, used for street lighting and other illumination.
Product information high pressure and specification. It is known by its signature monochromatic yellow color. Obtaining spectrum of sodium from sodium vapour lamp. The arc discharge is generally confined to a small fused quartz arc tube mounted within a larger borosilicate glass bulb. Apr 08, 2018 sodium lamp street lighting me use kiye jate he.
Put them in a sealed plastic bag and take it to your local waste facilities for recycling. Lamp lumen outputlm lamp lumen outputlm lamp lumen outputlm 70 w hpsve 5600 70 w mhcle vertical position 5600 25 w gls 230. The xenon gas which is easily ionized, facilitates striking the arc when voltage is applied across the electrodes. High pressure sodium lamp long run 4y, tubular bulb clear, base e40. Hps lamp is the better version of its counterpart lps lamp. If a lamp breaks, ventilate the room for 30 minutes and remove the parts, preferably with gloves. The basic principle behind the working of sodium vapor lamp is passing electric current through sodium gas to make the gas emit light. The avoid shell of the sonlamps is internally coated with aluminum oxide powder. A wide variety of high pressure sodium lamp 2000w options are available to you, such as bulb type, application, and certification. A wide variety of sodium lamp ignitor working options are available to you, such as plastic. The lps lamp was the first sodium lamp to be developed. These lamps are specially designed with inner glass tubes that include tungsten electrodes with electrical arc.
Sodium vapor lamp definition, an electric lamp in which sodium vapor is activated by current passing between two electrodes, producing a yellow, glareless light. The efficiency of a sodium vapour lamp under practical conditions is about 4050 lumenswatt. Like in a metal halide lamp, the working principle of a sodium vapour lamp is that of a gasdischarge tube, but in this case, the discharge takes place through a tube with a small quantity of sodium neonargon sox lamp or mercury sodium amalgam son lamp. Principally the sodium vapour lamp consists of the bulb containing a small amount of metallic sodium, neon gas, and. The heavy duty transformer or ballast is also long lived if the bulbs are changed out before they burn out.
Lamps of this type are used for general industrial lighting. The phenomenon of restriking the arc in an hid light source after a momentary power loss. A sodium vapour lamps output is in the red end of the light spectrum. Because their construction and performance is in many ways different, they are dealt with in two different. Dec 14, 2017 friends is video me ham discuss krenge sodium vapour lamp ke bare me. A wide variety of sodium vapour lamps ballast options are available to you, such as power factor compensation, usage, and style. It gives greenish blue colour light, which causes colour distortion. An electric current in the gas energizes mercury vapor which delivers ultraviolet radiation through discharge process and the ultraviolet radiation causes the phosphor coating of the lamp inner wall to radiate visible light.
Traditional magnetic ballasts are less efficient than. Sodiumvapor lamp definition of sodiumvapor lamp at. They have an efficiency of up to 190 lumens per watt compared to an incandescent street lamp which has between 15 and 19 lumens per watt. A choke is the most vital component for both low and high vapour lamps. The lamp must be operated at horizontal or nearly horizontal position to keep the. Sodium vapour lamp an architect explains architecture ideas. They generate light by sending an electrical charge through a gas to produce a plasma. A high intensity discharge hid lamp whose light is produced by radiation from sodium vapor and mercury. A simple explanation of a lowpressure sodium vapour lamp. Highpressure sodium lamps also known as hps lamps or hps lights are a type of sodium lamp that is widely used in industrial lighting and many public outdoor areas. Aug 26, 2014 light sources incandescent lamp discharge lamp florescent lamp sodium lamp high pressure mercury vapour lamp 3. Better efficiency, life and size are few of the advantages of hps lamp over lps lamp. Higher power devices, such as mercury vapor lamps or metal halide lamps use a higher current arc discharge.
They offer better color rendition than the more efficient high or lowpressure sodium vapor lamps. This article will provide details on the working, construction, and applications of the mercury vapour lamp. A sodium vapor lamp is a lamp that uses sodium to create light. Sodium vapor lamp wikipedia, the free encyclopedia. The heat from this warms sodium metal in the light to the point of vaporizing, which. I want to use a prism to separate out the individual wavelengths, a no then use a photographic film to obtain the spectrum on a screen. Before starting any work one must take a firm decision to do it. All highintensitydischarge lamps produce light from an arc tube that is usually contained in an outer glass bulb. The characteristic radiation from lowpressure sodium vapour is a monochromatic yellow. In these lamps, a material, such as sodium, mercury, or metal halide, is added to the arc tube. Peter cooper hewitt new york city had a history of innovations in other fields, and when he set about on the project of the mercury vapor lamp in 1898 it only took 3 years to develop the first reliable lamp with a acceptable color of light. In the street and highway lighting sodium vapour lamps are useful for their high efficiency, brightness and.
Sodium gas discharge lamps can be distinguished in two main groups. Sodium vapor lamps how do they work physics forums. High pressure sodium lights are used for illuminating large outdoor areas. A lamp breaking is extremely unlikely to have any impact on your health. The glass tube is made specially chemical resistant to withstand the chemical reaction of hot sodium. A lowpressure sodiumvapour lps lamp contains an inner discharge tube made of borosilicate glass that is fitted with metal electrodes and filled with neon and argon gas and a little metallic sodium. The lamp heats and the sodium is the last material to vaporize. Types of lamps and lighting written by ilo content manager. Some impurities may develop during this degradation and product may fail during the quality control analysis. Dec 25, 20 the basic principle behind the working of sodium vapor lamp is passing electric current through sodium gas to make the gas emit light. Can i obtain these lines from a sodium vapour lamp. The high pressure mercury vapour lamps find their principal use in flood lighting and industrial plant lighting.
Difference between sodium vapor lamp and mercury lamp. This project made possible through a cooperative agreement between the. Principally the sodium vapour lamp consists of the bulb containing a small amount of metallic sodium, neon gas, and two sets of electrodes connected in a pin type base. Pdf a 250w high pressure sodium lamp high power factor. Comparison between discharge and led lighting fixtures. In a low pressure sodium vapour lamp, argon or neon gas is first heated up to emit a slight red or purple glow. Hpsv lamp is powered by an ac voltage source in series with an inductive ballast in order to supply a nearly constant current to the lamp, rather than a constant voltage, thus assuring stable operatio. Lowpressure sodium lamps are highly efficient electrical light sources.
Highpressure sodium hps a highintensity discharge lamp, which utilises sodium vapour in a highpressure arc tube as the primary light producing element. The efficiency of sodium vapour lamps is between 40 to 50 lumens per watt with an average life of about 3000 hours. A metalhalide lamp similar to hpmv lamp is an electric lamp that produces light by an electric arc through a gaseous mixture of vaporized mercury and metal halides compounds of. This is close to the peak sensitivity of the human eye, and lowpressure sodium lamps are the most efficient lamps available at nearly 200 lumenswatt. Contains easytounderstand explanations and examples for commercial and industrial energy technologies. What are the advantages and disadvantages of the mercury. What are the advantages and disadvantages of the mercury lamp, sodium vapour lamp and xenon lamp used in photocatalysis. The temperature of the amalgam is determined to a great extent by lamp power. Gk, general studies, optional notes for upsc, ias, banking, civil services. It is mostly used in europe since it did not appeal in other markets due to its poor cri or color rendering. A fluorescent lamp is a low weight mercury vapour lamp that uses fluorescence to deliver visible light. A sodium vapor lamp is a gasdischarge lamp that uses sodium in an excited state to produce light. Working principle of sodium vapour lamp polytechnic hub. Know about different types of lights in lighting system.