Highpressure mercuryvapor lamps are those lamp commonly used for general lighting purposes. A sodiumvapor lamp is a gasdischarge lamp that uses sodium in an excited state to produce light. As far as efficiency is concerned, hps lamp is just as efficient as lps. The high pressure lights produce a more desirable golden to white light, while the color produced by low pressure lights is yellow to orange. Highpressure sodium vapour lamps performance specifications iec 60662. High pressure sodium lights are more popular than low pressure lights because of this significant color difference. Products will not be available on the market in eu27 countries as well as norway and switzerland.
Fluorescent lamp and working principle of fluorescent lamp. Low pressure sodium lamps are highly efficient electrical light sources, but their yellow light restricts applications to outdoor lighting such as street lamps. There are two types of sodium lamps lowpressure lps highpressure son. Product information high pressure and specification. In order to promote public education and public safety, equal justice for all, a better informed citizenry, the rule of law, world trade and world peace, this legal document is hereby made available on a noncommercial basis, as it is the right of all humans to know and speak the laws that govern them.
High pressure sodium lamp with clear tubular outer bulb philips. According to wikipedia, high intensity discharge hid lighting is a type of electrical gasdischarge lamp that produces light by means of an electric arc between tungsten electrodes housed inside a translucent or transparent fused quartz or fused alumina arc tube. High pressure sodium lamps are the most efficient artificial white light source with about 29% of the energy used by the lamp producing light. Low pressure sodium lamp the first sodium lamp that was developed was lps lamp. Better efficiency, life and size are few of the advantages of hps lamp over lps lamp. The better color rendering comes with a bit of sacrifice, it has less efficiency than the lps. 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. Lowpressure sodium lamps are one of the most efficacious light sources. Highpressure sodium lights have a better color rendition than lowpressure sodium lights. Dec 25, 20 sodium vapor lamps are very effective in fog while fluorescent lamps produce little glare. When a high pressure sodium lamp is to be disposed, it is subject to the current epa toxicity characteristic leaching procedure tclp disposal criteria.
This test is used to determine if an item can be managed as hazardous. A low pressure 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. If a lamp breaks, ventilate the room for 30 minutes and remove the parts, preferably with gloves. The mercury vapor raises the gas pressure and operating voltage, and the sodium vapor produces light when the pressure within the arc tube is sufficient. Nov 14, 20 mercury vapor lighting is the oldest hid technology. There are two types of mercury vapor light bulbs sold in the. High pressure sodium lights work by creating an electric arc through vaporized sodium metal, while additional materials and gases work to start the lamp and control the its color.
High pressure sodium lamps fall into this category. Standard lumalux standard lumalux lamps are known for high efficacy, long life, and reliability. Sodium retaining reservoirsprovide even distribution of sodium for 100% lumen maintenance, long lamp life and lamp wattage control. Sodium vapor lamps are some of the most efficient lamps in the world. 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. Metal halide and mercury vapor lights are often found in warehouses, big box retail warehouse stores, and sports facilities, while highpressure sodium lights are typically used for highway and street lights. The common fluorescent lamp is actually a low pressure mercury arc lamp. The sodium is mixed with other impurities to create a more white light. High pressure sodium vapour lamps performance specifications iec 60662. This development took place in the 1960s of the twentieth century. Browse the sont products and find the product that you are looking for by using the compare option. Sodium lamps were first produced commercially by philips in holland in 1932. Jul 05, 2017 sodium vapor lamps emit yellow light only. Dec 14, 2017 friends is video me ham discuss krenge sodium vapour lamp ke bare me.
High pressure metal halide lamps high pressure sodium. Electrodes 30a, 30b are positioned in the discharge vessel 20 and are each connected to a current supply conductor 40a, 40b which issues from the discharge vessel 20 at a respective end 21a. Venture lightings high pressure sodium lamps hps lamps. White light interchangeable with high pressure high pressure sodium lamps son 20% failure 12000 hour and 50% 14000 hour. Venture offersquality hps lamps that operate on our matching hps basllasts. A lamp breaking is extremely unlikely to have any impact on your health. Their arc tubes contain sodium, and the metal salt included is typically mercury. 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. Pdf click on the lamp product number to view detailed lamp specifications. Difference between sodium vapor lamp and mercury lamp gktoday. Now lets look at low pressure and high pressure sodium lamps. Gk, general studies, optional notes for upsc, ias, banking, civil services. The sylvania lumalux family of clear and coated high pressure sodium lamps are ideally suited for street and area lighting applications where high efficiency and long life are desired but color rendering is not critical.
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. Because of this, they are not used for everyday lighting purposes, even though they give extremely high output. Pdf modeling and checking the power quality of high pressure. The inner surface of the lamp is coated with a fluorescent and often slightly phosphorescent coating made of varying blends. Contains easytounderstand explanations and examples for commercial and industrial energy technologies. Difference between sodium vapor lamp and mercury lamp. Due to the long life, efficient energy usage and good vision, sodium vapor lamps are used for street lighting. A highpressure sodiumvapor 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. Sont son high pressure sodium philips philips lighting. The gas that is present is usually xenon, which is used for starting the lamp. Lowpressure sodium lamps are highly efficient electrical light sources, but their yellow light restricts. Click on the icon to the right to download the latest version of adobe. The main advantage of hps lamp over lps lamp is that former emits more acceptable color.
High pressure sodium lamp when it comes to street lightening, high pressure sodium lamp is used more commonly than any other lamp. High pressure sodium lamp hps lamp the hps lamp is the most ubiquitous lamp for street lighting on the planet. They have an efficiency of up to 190 lumens per watt compared to an incandescent street lamp which has between 15 and 19. Components the arc tube contains the xenon and sodium mercury amalgam mixture and provides. May 22, 20 difference sodium vapour lamp mercury lamp light source works by electric discharge passage of electricity through sodium vapours at high low pressure works through the. 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. Inefficient sodium vapour lamps will therefore be discontinued as of april 2012. Colour rendering ra 90 constant light colour during the whole lifetime. Soxe lamps are distinguished by the use of the black bases compared to the tan bases used on sox lamps. Mercury vapour lamps have resonant emissions at 185nm and 254nm, both in the uv range. Mercury vapor lighting is the oldest hid technology.
The lamp heats and the sodium is the last material to vaporize. The lamp is an improvement over the lps lamp in that it has more acceptable color with the great efficiency of the sodium lamp. High pressure sodium hid lamps the high pressure sodium hid bulbs available at supply parking lots, construction sites, gymnasiums, and warehouses with a high intensity, yellowtoned light. You are now visiting our global professional lighting website, visit your local website by. Ep0335202a2 highpressure lamp, especially a highpressure. Sodium vapor lamp is the most energy efficient of all other lamps because it uses all its current to produce yellow light.
About 51% of these are high pressure sodium lamps, 10% are flood lights, and 15% are ballasts. May 22, 20 there are two types of sodium lamps lowpressure lps highpressure son. Lumalux super and sox lamp ratings are based on measurements at constant input voltage. A high pressure discharge lamp, especially a high pressure sodium vapour lamp, having a tubular ceramic discharge vessel 1 in whose interior there are located electrodes 19 and a filling consisting of a noble gas which can be ionised and a metallic additive 16, and which has a ceramic closing element 15 which closes the ends of the ceramic discharge vessel, if required in an integrated.
In order to promote public education and public safety, equal justice for all, a better informed citizenry, the rule of law, world trade and world peace, this legal document is hereby made available on a noncommercial basis, as it is the right of all humans to. Increasing arc tube pressure improves the colour appearance of reds, blues, and greens. Aug 20, 2016 a fluorescent lamp tube is filled with a gas containing low pressure mercury vapor and argon, xenon, neon, or krypton. Low pressure sodium lamps are highly efficient electrical light sources, but their yellow light restricts applications to outdoor. The inner surface of the lamp is coated with a fluorescent and often slightly phosphorescent coating made of varying blends of metallic and rareearth. The lamps can be constructed to emit primarily in the uva around 400 nm or uvc around 250 nm. The mercury vapour lamp in construction is similar to sodium vapour lamp. The construction and applications of sodium vapour lamps. High pressure sodium lamps or hps lamps electrical4u. The lamp works by creating an electric arc through vaporized sodium metal. A wide variety of high pressure sodium lamp 2000w options are available to you, such as bulb type, application, and certification. High pressure metal halide lamps high pressure sodium lamps. A big driver behind their use is their high efficiency.
All high pressure sodium lamps contain some amount of mercury. A sodiumvapor lamp is a gasdischarge lamp that uses sodium in an excited state to produce light at a characteristic wavelength near 589 nm. They are commonly used in public parking lots, roadways, and other security areas. This lamp is the most popular lamp for street and outdoor lighting in the world due to its high efficiency and. Highpressure sodium lights are more popular than lowpressure lights because of this significant color difference. Hps lamp is the better version of its counterpart lps lamp. 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. At high pressure, the gas itself absorbs some of this radiation and reemits it as visible light. A fluorescent lamp tube is filled with a gas containing low pressure mercury vapor and argon, xenon, neon, or krypton. Best applications for mercury vapor lamps eye lighting. Sodium lamp performance is directly related to the gas pressure inside the arc cylinder. They feature excellent lumen maintenance and quick restrike times.
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. The arc then heats up the mercury and the mercury vapor then lights, giving the lamp a bluish color. From street lighting to parking lots, major portions of our infrastructure depend on this century old lighting technology. High pressure sodium plus eco 30,000 hour noncycling works on standard ballasts. These lamps are mostly used for street lighting as well as industrial uses. Low pressure and high pressure sodium vapour lamp gktoday. Nowadays, highpressure sodium hps lamps are widespread. This blog showcases in detail the working of high pressure sodium vapour lamp. The highpressure lights produce a more desirable golden to white light, while the color produced by lowpressure lights is yellow to orange. Components the arc tube contains the xenon and sodiummercury amalgam mixture and provides. High pressure sodium lamps, invented in 1931, use sodium in an excited state to produce light. The common fluorescent lamp is actually a lowpressure mercury arc lamp. In mediumpressure mercuryvapor lamps, the lines from 200600 nm are present.
A sodiumvapor lamp is a gasdischarge lamp that uses sodium in an excited state to produce light at a characteristic wavelength near 589 nm there are two varieties of such lamps. Sodium vapor lamps are very effective in fog while fluorescent lamps produce little glare. Mar 15, 2020 a fluorescent lamp is a low weight mercury vapour lamp that uses fluorescence to deliver visible light. Lamps are available from 35 to 150 watts in medium base and 50 to.
High pressure sodium lamps are one of the most efficient hid light sources available. High pressure sodium lights have a better color rendition than low pressure sodium lights. Lowpressure sodium lamps are highly efficient electrical light sources, but. A sodium vapor lamp is a gasdischarge lamp that uses sodium in an excited state to produce light.
Lumen rating sylvania high pressure sodium lamps, with the exception of lumalux super and sox lamps, are based on burning cycles of at least 10 hours per start and ballasts which meet ansi standards. Difference sodium vapour lamp mercury lamp light source works by electric discharge passage of electricity through sodium vapours at highlow pressure works through the. Lowpressure sodium lamps are highly efficient electrical light sources, but their yellow light restricts applications to outdoor lighting such as street lamps. High pressure sodium lamps lighting associates, inc.
For high pressure sodium lamps this will be after approximately 5 minutes. This second edition cancels and replaces the first edition published in 1980 and its amendments. Highintensity discharge lamp with a cdm discharge tube inside a son lamp clear tubular outer bulb. High intensity discharge lamp with a cdm discharge tube inside a son lamp clear tubular outer bulb. A high pressure sodium lamp includes discharge vessel 20 which is enclosed with intervening space 1 by an outer bulb 10, which space contains a gasfill with at least 70 mol. We also offer special conversion metal halide bulbs that can be used with fixtures intended for high pressure sodium light bulbs. This blog showcases in detail the working of highpressure sodium vapour lamp. Sodiumvapour lamp, electric discharge lamp using ionized sodium, used for street lighting and other illumination. Pdf high pressure sodium vapor lamps due to long service life high light, as the most comprehensive street lighting and industrial lighting whose use. Sodium vapour lamp, electric discharge lamp using ionized sodium, used for street lighting and other illumination. 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. A fluorescent lamp is a low weight mercury vapour lamp that uses fluorescence to deliver visible light.
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