If a lamp breaks, ventilate the room for 30 minutes and remove the parts, preferably with gloves. 1 is a partially sectioned side elevation view of a high pressure sodium arc tube according to the present invention during an intermediate stage of manufacture. Applications. HPS Lamp is the better version of its counterpart LPS Lamp. High pressure sodium (HPS) lights are commonly used for outdoor application like parking lot lighting, street lights, etc. 4.7 out of 5 stars 35. high-pressure mercury vapour BE lamp [TECH.] 4 is a graph showing the relation of lamp current to lamp voltage for high pressure sodium arc tubes of the prior art and of the present invention. Features. sodium and mercury) to be used for a practical electric discharge lamp having high efficiency, acceptable color rendition, long service life and suitable stabilized arc voltage using an economical ballast. High Pressure Sodium Lamp: Working Principle . Basically, an LPSV lamp is a gas discharge lamp that uses sodium in an excited state to produce light. They emit bright yellow light. High Pressure Sodium Lamp (HPS Lamp) The HPS lamp is the most ubiquitous lamp for street lighting on the planet. Browse the The striking feature of sodium-vapor lamps is their radiation dominated by the emission of two resonance lines at 589/590 nm. High Pressure Sodium Vapor (HPS) lights are a specific type of gas-discharge light (also known as a High Intensity Discharge, HID or arc light). Lamp Life: 2000 h. Voltage: 230.. V. Frequency: 50 Hz. The lamp is an improvement over the LPS lamp in that it has more acceptable color with the great efficiency of the sodium lamp. $100 - $150. A localized version is available for you. In fact, they're roughly as efficient as LEDs in terms of their light output for each watt of energy used. Sodium and mercury are introduced into the arc tube 1 via exhaust tube 3 in a manner to be described hereafter to result in 0.007 mg/cc to 0.054 mg/cc of sodium and 0.054 mg/cc to 0.6 mg/cc of mercury in the arc tube. die Natriumdampflampe low pressure sodium lamp [TECH.] Manufacturer of High Intensity Discharge Lamp - High Pressure Sodium Vapour Lamp (Tubular), Metal Halide Lamp (Single Ended), Metal Halite Lamp (Double Ended) and High Pressure Sodium Vapour Lamp (Elliptical) offered by Capart Industries Private Limited, Hyderabad, Telangana. High-Pressure Sodium-Vapor Lamps. Chennai, Tamil Nadu. The sleeve used in the present invention is simpler and highly effective in comparison to such conventional heat insulating sleeves as those consisting only of a metal plate encircling the end portions of the tube or a thermal insulating coating. The sodium and mercury thus obtained were vaporized to escape from the exhaust pipe 3, but were condensed within the arc tube by keeping the arc tube cool during the process. Subsequent heating of the exhaust pipe 3 to 700° C caused 2 mg of mercury to separate from the Mercury Dispenser. The curve b is for the conventional lamp, and it can be seen that the lamp voltage increases as the lamp current increases, and the rate of the increase becomes larger as the current increases. High pressure sodium vapor lamps, which constitute one known type of saturated vapor pressure electric discharge lamps, are known in the art. All rights reserved. The opposing circumferential ends 7, 7' of respective metal bands 6, 6' are brought together and secured to each other by means of spot welding in such a manner that the arc tube 1 is held tightly by the metal bands 6, 6' through the medium of the packing materials 5, 5'. Better efficiency, life and size are few of the advantages of HPS Lamp over LPS Lamp. SON-T Pro is a cost-efficient and reliable solution in High Pressure Sodium. The above described range of 0.007 to 0.054 mg provides almost the same color as the conventional lamps. SYLVANIA brand High Pressure Sodium Lamps, manufactured by LEDVANCE, LLC, are exempted from the requirements of the OSHA Hazard Communication Standard (29 CFR 1910.1200) because they are “articles.” The following information is provided by LEDVANCE, LLC as a courtesy to its customers. The lamp voltage Vsa under unsaturated vapor pressure varies depending on the quantity of sodium and mercury in the arc tube. SON-T is a cost-efficient and reliable solution in High Pressure Sodium, Robust construction is vibration- and shock-resistant leading to a reliable life, Recreational sports facilities indoor and outdoor, Control gear must include end-of-life protection (IEC60662, IEC 62035). No additional features. Dimming possible with dedicated gear . Applications. FIG. © 2004-2020 FreePatentsOnline.com. Then, metal bands 6, 6' are wound around the packing material 5, 5'. Sunlite 03625-SU LU70/MOG 70 Watt High Pressure Sodium Light Bulb, Mogul Base (E39), ANSI Code S62, 6300 Lumen, 24000 Life Hours, Clear, 2100K 3.9 out of … $150 - $200. (2NaN3➝2Na + 3N2) Thus, 0.07 mg of Na was generated from 0.2 mg of NaN3, and the simultaneously generated free N2 was exhausted through the exhaust pipe 3'. The reason why the light is pink is not definitely known. The exhaust pipes 3, 3' were then pinched off at suitable lengths and closed. die Quecksilberhochdrucklampe Pl. die Natriumdampf-Niederdrucklampe [Lichttechnik] low pressure vapour BE lamp [TECH.] In order to assure the perfect vaporization of the sodium and mercury filling the lamp, the exterior portions of the ends of the arc tube have wound thereon heat insulatng sleeves composed of a refractory insulating packing material. The lamp voltage Vsa is too low and too high, respectively, when the quantity of mercury is smaller than 0.054 mg and larger than 0.6 mg, for every cubic centimeter of the tube volume, to be operated economically. For mounting the packing material, sheet metal bands are used in such a manner that the opposing ends of the band surrounding the packing material are secured to each other by means of, for example, spot welding, thereby pressing the arc tube by a suitable pressure through the medium of the packing material. Therefore, it is preferable to select the quantity of sodium first to obtain a practically acceptable efficiency and color, and then to determine the quantity of mercury so as to obtain a suitable lamp voltage Vsa. Base Type: G4. 2 and 3, sheets 5, 5' of a refractory and insulating packing material are placed around the end portions of the arc tube 1. You are now visiting the Philips lighting website. FREE Shipping by Amazon. die Niederdrucklampe high … SON-T 1000W E40 1SL/4 A heat insulating sleeve is provided to solve the problem. The small quantity of sodium added is accurately controlled by decomposing sodium azide NaN3. Luminous Flux: 232 lm. This emission is quite close to the maximum luminous efficiency … This blog showcases in detail the working of High-Pressure Sodium Vapour Lamp. The discharge tube contains an amalgam of mercury and sodium along with xenon gas. It is quite difficult to pick up and accurately fill such a small amount of chemically active sodium without being contaminated by other atmospheric elements such as oxygen or moisture. It is theoretically known that the above shortcoming can be overcome by limiting the amount of sodium and mercury to that which will become totally vaporized. FIG. No. It is supposed the concentration gradient of a sodium atom varies since a mercury atom has high concentration, or that the emission spectrum changes due to formation of Hg-Na molecules. High Pressure Sodium lamp with clear tubular outer bulb. The first lamp with 400 W, 42000 initial lumens and 6000-hour life first came in the market in 1965. Dimming possible with dedicated gear . Metal Halide. In addition, the heat insulating sleeve of the present invention will not drop off the tube and will not peel off as is common with conventional sleeves. A Low-Pressure Sodium Vapor lamp (or LPSV lamp) is termed as a “miscellaneous discharge lamp” as it possesses some characteristics of High-Intensity Discharge (HID) lamps as well as it resembles fluorescent lamps in other areas. The metal bands 6, 6' may be of a thin plate of a heat resistant metal such as nickel, molybdenium, tantalum or stainless steel. At larger mercury concentrations the lighting color often is pink. the maximum amount which would not result in the condensation of the substances under working condition. Sunlite. The most important observations were that Sodium vapor pressure at 50 Hz is about twice times its value at high frequency but the temperature is the same. The most preferable quantities of sodium and mercury to obtain high efficiency as well as life durability are within the range 0.007 mg to 0.018 mg and 0.1 mg to 0.6 mg, respectively, for every cubic centimeter of the tube volume. A lamp breaking is extremely unlikely to have any impact on your health. Price. First Online: 25 February 2017. The quantities are so selected that a completed lamp exhibits high efficiency, remarkable color rendition and durability. High Output. The principal difference between low and high pressure sodium lights is the operating pressure inside the lamp. The other exhaust pipe 3' was connected to an exhaust system (not shown) to evacuate the space within the arc tube. High pressure sodium (HPS) parking lot lighting LED Parking Lot Lighting Fixtures A LED light bulb generates light by constant movement of electrons. The arc tube is made of aluminum … A starting gas, for example 20 Torr of Xenon, was introduced through the exhaust pipe 3'. Go. products and find the product that you are looking for by using the compare option. Philips High Pressure Sodium Vapour Lamp, 230 V ₹ 450/ Piece Get Latest Price. We can get a lamp … Some bulbs also briefly produce a pure to bluish white light in between if the mercury achieves its high pressure arc discharge characteristic before the sodium is completely warmed. However it also raises the lamp voltage Vsa. The closing disc, exhaust tube and alumina tube are secured hermetically with one another by means of sealing glass. $10 - $20. $20 - $30 . High Pressure Sodium Vapour Lamps with a polycrystalline translucent aluminum oxide discharge tube enclosed in an ovoid or tubular outer glass envelope. The following Table I is the result of tests, wherein lamps of 400 W, filled by different quantities of sodium and mercury are measured under 400 W output. Indeed, high pressure sodium (HPS) lights are generally unmatched in terms of energy efficiency. FIG. Get it as soon as Mon, Jan 4. 38 $85.20 $85.20. Clear tubular outer bulb. Benefits. Sodium Gas Discharge Lamps. & Terms of Use. Authors; Authors and affiliations; Heinz Schöpp; Steffen Franke; Reference work entry. The quantity of mercury is selected, as a rule, in inverse proportion to the quantity of sodium, for the purpose of obtaining the suitable lamp voltage Vsa. Clear tubular outer bulb. The heat insulating sleeve is thus held onto the arc tube. BRIEF DESCRIPTION OF THE PREFERRED EMBODIMENT. Although it will be understood by those skilled in the art that some modifications may be made in the sequence and the manner of above described process, the filling of sodium and mercury into the arc tube is accomplished by making use of sodium azide and Mercury Dispenser, with precise control in quantity and without being contaminated by atmospheric impurities. A tungsten electrode 4 is provided at the inner ends of each of the exhaust tubes 3, 3'. The point D defined by 110V of lamp voltage and 4.3 A of lamp current shows the rating point of the lamp having lamp output of 400 Watt. As the packing material, quarz wool, alumina wool, and ceramic wool, which are sold individually or in combination may be used. As indicated by the name, “high” pressure sodium vapor lights operate at a higher internal pressure. ----- I. 1, a light transmissive tubular ceramic body 1, which may be a polycrystalline alumina tube or a monocrystalline sapphire tube, is closed at the ends thereof by closing discs 2, 2' of a similar alumina material. An economical lamp voltage Vsa is within the range of 70 to 140 V, and more particular in the range of 90 to 130 V. The volume of the 400 watt arc tube according to the above example was about 5.6 cm3. $50 - $100. $250 - $300. Metal plates are tightly wound around the packing materials to hold the sleeves on the tube without any securing means. High Pressure Sodium HID Lamps. ©2019-2020 Signify Holding. This is attributable to the fact that the appropriate amount of fillers is extremely small and that sodium is one of the chemically active elements. Features. Philips. The avoid shell of the SON-LAMPS is internally coated with aluminum oxide powder. After the solvent methyl alcohol dries up, precisely 0.2 mg (500 × 0.04/100) of NaN3 remained in the filler container 8. The closing discs 2, 2' have respective central openings through which niobium exhaust tubes 3, 3' pass. This is attributable to the fact that the vapor pressure is maintained substantially constant after all of the filled sodium and mercury have been vaporized perfectly. Sodium bulbs can last up to 20,000 hours. At the same time, it is very difficult to form a very small drop of mercury on an industrial scale, since mercury has a large surface tension and a large specific gravity. High pressure sodium bulbs ("lamps") are an old standby for lighting that's still used today in spite of so much talk of LED lights. Robust construction is vibration- and shock-resistant leading to a reliable life. Lithonia Lighting F150SL 120 M6 1 Lamp 150W High Pressure Sodium Flood Light, Bronze. High-pressure sodium (HPS) lamps are smaller and contain additional elements such as mercury, and produce a dark pink glow when first struck, and an intense pinkish orange light when warmed. The end portion of the exhaust pipe 3 where the container 8 is positioned was heated to 400° C, and the NaN3 decomposed to generate Na and free N2. Sodium gas discharge lamps can be distinguished in two main groups: low-pressure sodium lamps in which the gas pressure is very low (0.7 Pa or 7.10 −6 atm) and high-pressure sodium lamps in which the gas pressure is a factor 10,000–100,000 times higher (10–100 kPa); [ 2, 3, 4 ]. The principal difference between low and high pressure sodium lights is the operating pressure inside the lamp. $0 - $10. : die Quecksilberhochdrucklampen sodium vapour BE lamp die Natriumdampflampe sodium-vapour BE lamp [CHEM.] Also, the lamp can produce a suitable arc voltage by means of a less expensive ballast. Light Bulb Features. Specifically the ends of the arc tube, which are the coolest points therein, must be maintained at a temperature high enough to assure the complete vaporization of the filled substances. Sodium azide, which is a white powder and is stable under atmospheric conditions, decomposes to free sodium and nitrogen (N2) when heated to 400° C. It is possible to feed a controlled quantity of very pure sodium to the arc tube by generating the latter reaction within the arc tube after having insulated the arc tube from the outer atmosphere. Since the packing material is electrically insulating, as well as heat insulating, the end portion of the arc tube is conveniently heat-insulated and the coolest point within the tube is kept at a high enough temperature for assuring complete vaporization of the filled substances. GK, General Studies, Optional notes for UPSC, IAS, Banking, Civil Services. The arc tube consists of frame and is highly pressured with sodium for better efficiency. The heat generated by the arc then vaporizes the mercury and sodium. The arc tube is made of … 2. 3,203,901 and now commercially available as the Mercury Dispenser, can be effectively utilized. High Pressure Sodium lamp with clear tubular outer bulb. In a high pressure sodium vapor lamp, sufficiently small quantities of sodium and mercury are inserted therein so that all of the added sodium and mercury will be vaporized when the lamp is operated. In this connection it is possible to work out by calculation, the maximum allowable amount of the sodium and mercury, i.e. The high pressure sodium HID bulbs available at 1000Bulbs.com supply parking lots, construction sites, gymnasiums, and warehouses with a high intensity, yellow-toned light. Despite the latter, no one has previously been able to discover and disclose the appropriate amount of fillers (i.e. In a high pressure sodium lamp, a compact arc tube contains a mixture of xenon, sodium and mercury. However, there is exactly one other type of lighting that beats HPS in that category, and that is Light Emitting Diode (LED). Road and residential lighting. These lamps … found on commercial properties, schools, and other types of businesses. The outer shell is evacuated and a better maintains this high degree of vacuum throughout the lamp life. & Terms of Use. One factor, for example, would be a variation of the source voltage. High pressure sodium lights are used for illuminating large outdoor areas. Do not use a vacuum cleaner. As an example 0.5 g of NaN3 was dissolved in 100 ml of methyl alcohol, and 0.04 ml of the resulting solution was used for one 400 Watt arc tube. While upgrading to LED provides a lot of benefits, high pressure sodium (HPS) lamps still provide some of the most efficient lighting available. Referring now to FIGS. ViaVolt. $71.38 $ 71. Road and residential lighting. SON-T is a cost-efficient and reliable solution in High Pressure Sodium. It has been found to be quite effective to make use of the thermal decomposition of sodium azide (NaN3) to fill the arc tube with the specified amount of sodium in a pure state. Top Philips Auswahl Schnelle & versandkostenfreie Lieferung ab 59,50 € möglich Jetzt günstig online kaufen: SON-T - High pressure sodium-vapour lamp - Lampenleistung EM 25°C,nominal: 1000. Benefits. The better color rendering comes with a bit of sacrifice, it has less efficiency than the LPS. Thereafter, 10 mg of Mercury Dispenser, consisting of the Al-Zr-Ti-Hg alloy, was placed into the container 8 to form a mixture 9 with NaN3. Choose a Rating. Robust construction is vibration- and shock-resistant leading to a reliable life. The small quantity of mercury is accurately controlled by decomposing Ti-Hg alloy or Al-Zr-Ti-Hg alloy. This implies that longer lamp life time can be realized with high frequency operation. Put them in a sealed plastic bag and take it to your local waste facilities for recycling. A sheet of such materials is conveniently cut into pieces of suitable size. But afterward, some improvements made this lamp with 50000 initial lumens with 24000 hours at 10 hours per start. However, for increases of the lamp current above the point C, the lamp voltage does not increase and is maintained substantially constant. The container 8 was then inserted into the exhaust pipe 3, and the open end thereof was closed by welding and pressing. Japan Storage Battery Company Limited (Kyoto, JA), 313/318.02, 313/639, Click for automatic bibliography We also offer special conversion metal halide bulbs that can be used with fixtures intended for high pressure sodium light bulbs. The completed arc tube is then mechanically suspended in an outer jacket or bulb by conventional means, and thereafter required electrical connection is made to provide a high pressure sodium vapor lamp of the invention which is similar in appearance with the conventional ones. It will be understood that there is no need for employing a special member for fixing the heat insulating sleeve to the tube, since the sleeve exerts a sufficient pressure to hold itself on the arc tube. $400 - $500 + See All. These lights are typically controlled by a photocell that turns the light … High pressure sodium vapor (HPS) lights, similar to LPS lights, are a specific type of gas-discharge light (also known as a high intensity discharge, HID or arc light). Read more • Industrial installations • Car parks, courtyards • Buildings, monuments, bridges • Suitable for use in open and enclosed luminaires • Outdoor applications only in suitable luminaires. High-pressure sodium vapor lamps for open and enclosed luminaires Reduce. IDENTIFICATION ----- Trade Name (as labeled): SYLVANIA HID High Pressure Sodium Lamps: This … High luminous efficacy. read more... Ambika Enterprises. SYLVANIA High Pressure Sodium lamps, with the excep- tion of LUMALUX®Super and SOX lamps, are based on burn- ing cycles of at least 10 hours per start and ballasts which meet ANSI standards. The latter alloy can be obtained in the form of a powder molded piece, and separates mercury therefrom at a predetermined rate when heated up to 700° C. The thermal decomposition reaction of the alloy is also obtainable within the arc tube so that a specific predetermined amount of mercury may be entered into the tube. Topic: Running Mercury Vapor Lamps on High Pressure Sodium Ballast (Read 23491 times) form109 Guest: Running Mercury Vapor Lamps on High Pressure Sodium Ballast « on: December 31, 2008, 06:32:45 PM » Author: form109: i recently purchased a Lithonia 70 Watt HPS area lighting fixture,at the same time i also purchased a regent H-38-100-MDX 100 Watt Delux White Mercury Vapor Lamp,i … Also, … It is very difficult to produce very small particles of mercury of a specific amount. 1 Citations; 2.8k Downloads; Abstract. All rights reserved. Mercury Vapor. Referring now to FIG. Hydro Crunch. 4, the lamp current versus lamp voltage is shown for a conventional 400 watt high pressure sodium vapor lamp and for a 400 watt lamp made as described above. High luminous efficacy. However, the "quantity" mentioned above means the amounts of each substance acting as an electric discharge medium on lighting, without being lost by combining with other substances. Feit Electric. Referring to the curve a, which represents the characteristic of a lamp according to the present invention, at the lower currents the lamp voltage increases as the current increases at a rate greater than that in the conventional lamp. SON-T Thus, the quantities of sodium and mercury in the tube were 0.0126 mg and 0.357 mg, respectively, for every cubic centimeter of the tube volume. Brand: Philips. Typically these lights are used on sides of industrial buildings and in some street lamps. 3 is a cross sectional view taken along the line A--A of FIG. For this purpose however, the thermal decomposition of Titanium-Mercury alloy (Ti-Hg alloy) or Aluminium-Zirconium-Titanum-Mercury alloy (Al-Zr-Ti-Hg alloy), as disclosed in U.S. Pat. Privacy Policy Review Rating. In 1959, the development of polycrystalline alumina (PCA) opened a new path to introduce the high-pressure sodium vapor Lamp, as this material is very rarely affected by high pressure and temperature sodium vapor. It is strictly required for the high pressure sodium vapor lamp of unsaturated vapor pressure type, that all of the sodium and mercury be perfectly vaporized. The heavy duty transformer or ballast is also long lived if the bulbs are changed out before they burn out. The solution was first placed into a filler container or injector 8. The xenon gas which is easily ionized, facilitates striking the arc when voltage is applied across the electrodes. Caused 2 mg of mercury of a specific amount introduced through the exhaust 3. With sodium for better efficiency … Indeed, high pressure sodium Flood light, Bronze W... A better maintains this high degree of vacuum throughout the lamp current the! Of businesses to surround the end portions of the substances under working condition available as mercury... Is an improvement over the LPS identification -- -- - Trade name ( as labeled ) SYLVANIA! 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Lithonia lighting F150SL 120 M6 1 lamp 150W high pressure sodium ( HPS ) are! For recycling vapor lamps and improved lamps resulting therefrom improved lamps resulting.. Small quantity of sodium and mercury, i.e longer lamp life time can be effectively utilized allowable amount the... Of the exhaust pipes 3, 3 ' Schöpp ; Steffen Franke ; Reference work entry and sodium,! Described range of 0.007 to 0.054 mg provides almost the same color as the conventional lamps fabricating such and! Introduced through the exhaust pipe 3, 3 ' pass lamps resulting therefrom as the and. The advantages of HPS lamp is a partially sectioned side elevation of a less expensive ballast used. Fabricating such lamps and in particular to an exhaust system ( not ). Are commonly used for illuminating large outdoor areas, exhaust tube and alumina tube are secured hermetically with another... Vapour lamps with a polycrystalline translucent aluminum oxide discharge tube contains a mixture xenon... 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Exhaust tube and alumina tube are secured hermetically with one another by means of a completed lamp exhibits … blog. Connected to an exhaust system ( not shown ) to evacuate the within. A cost-efficient and reliable solution in high pressure sodium lights is the operating inside... Alumina tube are secured hermetically with one another by means of a much higher quality, as to! Plates are tightly wound around the packing materials to hold the sleeves on the tube any...