Lowpressure sodium lamps are one of the most efficacious light sources. Sylvania brand high pressure sodium lamps, manufactured by ledvance, llc, are exempted from the requirements of the osha hazard communication standard 29 cfr 1910. Dimples discharge tube for stabile charging and an equal output. Hse, 315w single ended mogul ceramic metal halide full spectrum csi lamp. Soxe lamps are distinguished by the use of the black bases compared to the tan bases used on sox lamps. Lamps are available from 35 to 150 watts in medium base and 50 to. The construction and applications of sodium vapour lamps. There are several differences between low and highpressure sodium lights. The principle of this lamp is that light is generated as the result of an electric discharge with sodium as emitting material and an inert gas as a. The mercury vapor raises the gas pressure and operating.
Og, 600w high pressure sodium real red lamp, 2000k cct. Low pressure sodium light bulbs sox low pressure sodium. Hse, w double arc high pressure sodium real red lamp, 2000k cct. The xenon gas which is easily ionized, facilitates striking the arc when voltage is applied across the electrodes. Low pressure sodium lamps do not contain mercury, but do contain sodium metal, which reacts with water, evolving heat. The lead used in the solder should pose little risk of exposure under normal use and handling. Lustra 55watt low pressure sodium security light fixture duration. All high pressure sodium lamps contain some amount of mercury. Contains easytounderstand explanations and examples for commercial and industrial energy technologies. Dispose of in accordance with federal, state and local requirements. Legally binding document step out from the old to the newjawaharlal nehru invent a new india using. A sodium vapor lamp is a gasdischarge lamp that uses sodium in an excited state to produce light.
For many years before the introduction of the sodium vapour lamp, scientists had been aware of the remarkably high luminous effica. Low and highpressure sodium lights are found in parking lots and areas where security is important. Check out these low pressure sodium sox bulbs at from top brands. Philips 327817 35 watt low pressure sodium 4550 lumens dc bayonet base ansi l70 sox35 philips low pressure sodium lamps soxe, sox are high energy efficiency, low pressure sodium lamps for indoor and outdoor applications. Product information high pressure and specification. The low pressure sodium arc discharge lamp was first made practical around 1920 owing to the development of a type of glass that could resist the corrosive effects of sodium vapor. Pdf click on the lamp product number to view detailed lamp specifications. Pdf the switch from lowpressure sodium to light emitting. The heat generated by the arc then vaporizes the mercury and sodium. In a high pressure sodium lamp, a compact arc tube contains a mixture of xenon, sodium and mercury.
They shed light in a color spectrum ranging from yellow to orange, usually in a relatively low intensity. Low pressure sodium lamp, type na10 national museum of. Even though they emit a yellow light, a lowpressure sodium lamp should not be confused with a standard highpressure sodium lamp, which is a high. There are several differences between low and high pressure sodium lights. Even in this age of led lighting, lps energy use efficiency is comparable to the best. See the photos lower on this page for more details. Mar 10, 2020 high pressure 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. In addition, the large physical size of the lamp means that it has a low surface luminance so it is less likely to give rise to glare, and the low operating. Lowpressure sodium lighting is a monochromatic source and is often rejected for its deficiency in supporting color. High pressure metal halide lamps high pressure sodium lamps. It is still widely used in certain cities like bogota, san diego, and some european cities. Led810040k led sox lamp 20 watt replaces 35w lps bypass ballast 3020 lumens 4000k bayonet base light efficient design led810040k.
Cleveland, oh 44112 usa unlike broken low pressure sodium lamps, high pressure sodium lamps will not react with water. Standard lumalux standard lumalux lamps are known for high efficacy, long life, and. 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. Measurements were made using a usb2000 spectrometer by ocean optics. Capacitors for use in tubular fluorescent high pressure mercury and low pressure sodium vapour discharge lamp circuit number of amendments. The following information is provided by ledvance, llc as a courtesy to its customers. 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.
All credits and sources are located at the bottom of each lighting page. High pressure sodium lamp with clear tubular outer bulb. High pressure metal halide lamps high pressure sodium. In 1932 a collaboration of general electric company of england gec, philips in the netherlands, and osram in germany introduced a discharge lamp that used lowpressure sodium vapor. The solid sodium metal remained on the bottom center of the bulb. Low pressure sodium lamps operate much like a fluorescent lamp and require a ballast. Unfollow low pressure sodium lamp to stop getting updates on your ebay feed. Page 2 of 5 revision a october 1, 2016 consult the sylvania product catalog or relevant technical data sheets for complete warnings, operating and installation guides for specific lamp types for instructions and fixture requirements that must be complied with to. Sodium lamp performance is directly related to the gas pressure inside the arc cylinder. Sodium retaining reservoirsprovide even distribution of sodium for 100% lumen maintenance, long lamp life and lamp wattage control. The low pressure sodium lamp is significantly cheaper and more compact. First we used the high pressure sodium lamp in a room with ambient light, but didnt find any interesting visualization with either our first prototype or our new one. The following information is provided by osram sylvania as a courtesy to its customers. The arc tube of this lamp contains sodium and mercury.
Pdf we used a beforeaftercontrolimpact paired design to examine the effects of a switch from lowpressure sodium lps to light emitting. Lowpressure sodium lamp definition of lowpressure sodium. Low pressure sodium lamps soxe and sox warmup characteristics effects of input voltage variations lamp volts lamp current lamp watts light output lamp volts lamp current lamp watts light output. Low pressure sodium light has a number of very unique properties arising from its spectral output, many of which make it technically the most suitable light source for road lighting and these are covered in detail on the next page.
High pressure sodium lamps may be used in open luminaires except for item 67527 lu400t7 rsc and sox low pressure sodium, which must be operated in an enclosed fixture. Sodiumvapour lamp, electric discharge lamp using ionized sodium, used for street lighting and other illumination. Other materials and gases are used to help start the lamp or control its color. The concept was based on the high voltage style with the addition of special features such that the discharge could be initiated at. Low pressure sodium lamps are highly efficient electrical light sources, but their yellow light restricts applications to outdoor lighting such as street lamps. W artykule przedstawiono charakterystyki pradowo napieciowe oraz przebiegi czasowe pradu, napiecia i mocy. Vivosun 2pack 600 watt high pressure sodium hps grow light bulb lamp high par enhanced red and orange spectrums cct 2100k, ultra bright 90,000 lumens 4. Increasing arc tube pressure improves the colour appearance of reds, blues, and greens. While these lamps are highly energyefficient they are rarely used because all objects under their light appear to be yellow or yellowgray. Og, 400w high pressure sodium real red lamp, 2000k cct. Low pressure sodium lamps use lead solder on the base of the lamp. Although the lamp does contain a small amount of mercury, as an amalgam with the sodium, there is very little ultraviolet light emitted by the lamp. Sodium gas discharge lamps can be distinguished in two main groups.
Pdf properties of highpressure sodium lamp by different supply. Ordering code bulb soxe 18 t17 sox 35 t17 sox 55 t17 sox 90 t21 sox 5 t21 sox 180 t21. Led sox lamp 100 watt replaces 180w lps bypass ballast 11,580 lumens 2200k. The discharge tube may be linear sli lamp 2 or ushaped. Installation the luminaires shall be installed on the bracket as shown on the drawings and as indicated in the field by the engineer. This is a philips low pressure sodium lamp rated at 180 watt and produces 32,000 initial lumens of light. During the early 1930s a third family of low pressure sodium lamp was developed by german osram in an attempt to overcome this limitation. Sylvania low pressure sodium bulbs sylvania low pressure sodium bulbs genesis lamp.
The composition of lps and hps lamps is somewhat similar, they both contain a noble gas and solid sodium. There is a brief warmup period for the lamp to reach full brightness. Product safety data sheet osram sylvania light bulbs. Even though they emit a yellow light, a low pressure sodium lamp should not be confused with a standard high pressure sodium lamp. These operated at pressures of less than 1 pa and produced a near monochromatic light spectrum around the sodium emission lines at 589. Low pressure sodium lighting flagstaff dark skies coalition. The system has the design capability to last for four.
Because their construction and performance is in many ways different. Standard lumalux standard lumalux lamps are known for high efficacy, long life, and reliability. Low and high pressure sodium lights are found in parking lots and areas where security is important. They are commonly used in public parking lots, roadways, and other security areas. This test is used to determine if an item can be managed as hazardous.
Information on the history and technology of lowpressure sodium lighting. Click on the icon to the right to download the latest version of adobe. Mar 15, 2020 a fluorescent lamp is a low weight mercury vapour lamp that uses fluorescence to deliver visible light. 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. Dec 06, 2011 the low pressure sodium lamp is also known as an lps lamp. Sylvania brand low pressure sodium lamps are exempted from the requirements of the osha hazard communication standard 29 cfr 1910.
When current passes between the electrodes, it ionizes the neon. Warnings,cautions and operating instructions for ceramalux high pressure sodium lamps ceramalux high pressure sodium lamps low total cost of ownership long lifeup to 24,000 hours high efficacy up to 140 lpw. High pressure sodium flood light general purpose outdoor hps by lithonia lighting. Low pressure sodium lamp synonyms, low pressure sodium lamp pronunciation, low pressure sodium lamp translation, english dictionary definition of low pressure sodium lamp. A sodiumvapor lamp is a gasdischarge lamp that uses sodium in an excited state to produce light at a characteristic wavelength near 589 nm. The lamp works by creating an electric arc through vaporized sodium metal. Provides focused illumination for outdoor use in residential and light commercial applications. The very yellow color does not attract insects but it distorts colors.
There are two types of sodium lamps lowpressure lps highpressure son. There is a limited range of either linearlamp or utube fixtures available. Each additional lamp beyond the first for luminaires with multiple lamps operating low pressure sodium lamps candela tabulation at other than 22 12degrees lateral by 2 12deg. Lowpressure sodium lamps use lead solder on the base of the lamp. Low pressure sodium lamps are used in outdoor lighting of some parking areas and bridge underpasses. The lights require up to 10 minutes to start and are best used when they can stay on for hours at a time. Ideal for walkways, yards, patios, play areas and driveways creating an inviting exterior space as well as providing safety and security. Lamps the low pressure sodium lamps to be furnished with the luminaire shall be 55 watt, with a rated life of 18,000 hours equal in quality, design and performance to north american phillips company sox55. Lowpressure sodium lamps are highly efficient electrical light sources, but their yellow light restricts applications to outdoor lighting such as street lamps. Lowpressure sodium lampsproducing up to 180 lumens per watthave the highest efficacy of all commercially available lighting sources.
The peak is at 592 nm, however the lamp s dominant wavelength was measured at 588,6 nm. Since its commercial introduction in 1932, the low pressure sodium lamp has consistently maintained its enviable position as the most efficient light source available. Low pressure and high pressure sodium vapour lamp gktoday. The lowpressure sodium lamp ieee conference publication. A quick look at a 400w osram sont lamp with an integral ignitor. Low pressure sodium lamps were invented first in 1920 by arthur h. May 06, 2012 lustra 55watt low pressure sodium security light fixture duration. The story of low pressure sodium lighting is the u. May 22, 20 low pressure sodium lps lamps have a borosilicate glass gas discharge tube arc tube containing solid sodium, a small amount of neon, and argon gas in a penning mixture to start the gas discharge. The lamps are also physically largeabout 4feet long for the 180watt sizeso light distribution from fixtures is less controllable.
They are particularly useful for outdoor applications in cities where light pollution. Low pressure sodium lamps range in size from 35 watts to 180 watts. Lowpressure sodium lamps do not contain mercury, but do contain sodium metal, which reacts with water, evolving heat. As knowledge of materials and experience making electric lamps grew in the early 20th century, more efficient light sources began to reach the market. Lamptech museum of electric lamp technology sox low pressure sodium. Ballasts designed specifically for lps must be used. High pressure sodium flood light general purpose outdoor hps. The first lamp was a round bulb with two electrodes on each side. Lowpressure sodium lamps operate much like fluorescent lamps and require ballast. Low pressure sodium lamps have the highest efficacy of all commercially available lighting sources.
A fluorescent lamp is a low weight mercury vapour lamp that uses fluorescence to deliver visible light. It has a dc bayonet base by22d and does require a l74 ansi code ballast to operate. Sylvania general lighting gidds685645 sylvania lumalux eco ecologic high pressure sodium lamp, et23. Duquesne light commercial library apogee interactive. Commission, public interest energy research program, 2002 pdf, 1. A lowpressure sodium lamp is shown in the image below.
The peak is at 592 nm, however the lamps dominant wavelength was measured at 588,6 nm. When heated up the metal would vaporize and the lamp would glow yellow. Get free 2day shipping on qualified low pressure sodium, hid bulbs products or buy lighting department products today with buy online pick up in store. When a high pressure sodium lamp is to be disposed, it is subject to the current epa toxicity characteristic leaching procedure tclp disposal criteria. Bullough, lighting design and application, september 2004. Venture lightings high pressure sodium lamps hps lamps.
The advantages of a selfstarting son lamp is that an external ignitor is not required and thus reduces complexity and cost of the. A sodiumvapor lamp is a gasdischarge lamp that uses sodium in an excited state to produce light. Lampbase by22d operation position h110 18w en 26w en p20. The concept was based on the high voltage style with the addition of special features such that the discharge could be initiated at ordinary mains voltages.
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