All rights reserved. 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. Dimming possible with dedicated gear . LED lamps produce light of a much higher quality, as opposed to the dim yellow one generated by HPS. 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. No additional features. $50 - $100. 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 above described range of 0.007 to 0.054 mg provides almost the same color as the conventional lamps. 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. High Output. the maximum amount which would not result in the condensation of the substances under working condition. The solution was first placed into a filler container or injector 8. In such lamps, the operating characteristics, especially the arc voltage, tend to fluctuate depending on those factors which will affect the temperature of the coolest point in the arc tube. High pressure sodium (HPS) lights are commonly used for outdoor application like parking lot lighting, street lights, etc. SON-T Parrys, Chennai 120, 3rd Floor, Govindapa Naicken Street 100, Govindappa Nicken Street, Parrys, Chennai - 600001, Dist. SON-T 1000W E40 1SL/4 Review Rating. Luminous Flux: 232 lm. 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. Browse the The length of the arc tube covered by the heat insulating plate may be 5 to 8 mm for obtaining a satisfactory heat insulating effect which will be increased when the insulating plate is elongated to extend outwardly of the ends of the arc tube 1 thereby encircling the exhaust pipes 3, 3'. As a suitable solvent for sodium azide (NaN3), methyl alcohol is preferably used for convenience of the succeeding drying process although sodium azide is also soluble in water. 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. Referring to FIG. 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. $20 - $30 . 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 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. These lights are typically controlled by a photocell that turns the light … A tungsten electrode 4 is provided at the inner ends of each of the exhaust tubes 3, 3'. 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. Robust construction is vibration- and shock-resistant leading to a reliable life. High Pressure Sodium lamp with clear tubular outer bulb. If a lamp breaks, ventilate the room for 30 minutes and remove the parts, preferably with gloves. 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. While upgrading to LED provides a lot of benefits, high pressure sodium (HPS) lamps still provide some of the most efficient lighting available. ViaVolt. 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. & Terms of Use. A starting gas, for example 20 Torr of Xenon, was introduced through the exhaust pipe 3'. 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. The lamp voltage Vsa under unsaturated vapor pressure varies depending on the quantity of sodium and mercury in the arc tube. die Natriumdampflampe low pressure sodium lamp [TECH.] The discharge tube contains an amalgam of mercury and sodium along with xenon gas. Philips High Pressure Sodium Vapour Lamp, 230 V ₹ 450/ Piece Get Latest Price. Choose a Rating. The other exhaust pipe 3' was connected to an exhaust system (not shown) to evacuate the space within the arc tube. 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). Sodium bulbs can last up to 20,000 hours. Applications. The arc tube consists of frame and is highly pressured with sodium for better efficiency. : die Quecksilberhochdrucklampen sodium vapour BE lamp die Natriumdampflampe sodium-vapour BE lamp [CHEM.] The xenon gas which is easily ionized, facilitates striking the arc when voltage is applied across the electrodes. FIG. The heat insulating sleeve is thus held onto the arc tube. 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. As indicated by the name, “high” pressure sodium vapor lights operate at a higher internal pressure. 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 … The heavy duty transformer or ballast is also long lived if the bulbs are changed out before they burn out. 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. Subsequent heating of the exhaust pipe 3 to 700° C caused 2 mg of mercury to separate from the Mercury Dispenser. The lamp voltage Vsa increases as the quantity of sodium increases, accompanied by the change in spectral characteristic and efficiency, while an increase in quantity of mercury does not affect the spectral characteristic materially. $71.38 $ 71. Benefits. Metal plates are tightly wound around the packing materials to hold the sleeves on the tube without any securing means. Then, metal bands 6, 6' are wound around the packing material 5, 5'. As indicated by the name, “high” pressure sodium vapor lights operate at a higher internal pressure. The arc tube is made of … This blog showcases in detail the working of High-Pressure Sodium Vapour Lamp. Referring now to FIG. 4.7 out of 5 stars 35. 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. The quantity of sodium is, preferably, 0.007 to 0.054 mg for every cubic centimeter, because the efficiency is unacceptably low for smaller quantities and the durability of the arc tube is reduced for larger quantities of sodium. In this connection it is possible to work out by calculation, the maximum allowable amount of the sodium and mercury, i.e. 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. 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. Metal Halide. $10 - $20. Road and residential lighting. 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. Lithonia Lighting F150SL 120 M6 1 Lamp 150W High Pressure Sodium Flood Light, Bronze. Verified Supplier. 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. We can get a lamp … GK, General Studies, Optional notes for UPSC, IAS, Banking, Civil Services. The outer shell is evacuated and a better maintains this high degree of vacuum throughout the lamp life. High Pressure Sodium lamp with clear tubular outer bulb. A lamp breaking is extremely unlikely to have any impact on your health. to. The exhaust pipes 3, 3' were then pinched off at suitable lengths and closed. The first lamp with 400 W, 42000 initial lumens and 6000-hour life first came in the market in 1965. The metal bands 6, 6' may be of a thin plate of a heat resistant metal such as nickel, molybdenium, tantalum or stainless steel. 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. You are now visiting the Philips lighting website. All rights reserved. The principal difference between low and high pressure sodium lights is the operating pressure inside the lamp. 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. Benefits. The small quantity of sodium added is accurately controlled by decomposing sodium azide NaN3. 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. At larger mercury concentrations the lighting color often is pink. found on commercial properties, schools, and other types of businesses. 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. Chennai, Tamil Nadu. One factor, for example, would be a variation of the source voltage. $250 - $300. 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. High-Pressure Sodium-Vapor Lamps. read more... Ambika Enterprises. Road and residential lighting. Dimming possible with dedicated gear . Japan Storage Battery Company Limited (Kyoto, JA), 313/318.02, 313/639, Click for automatic bibliography 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. IDENTIFICATION ----- Trade Name (as labeled): SYLVANIA HID High Pressure Sodium Lamps: This … The quantities are so selected that a completed lamp exhibits … 3,203,901 and now commercially available as the Mercury Dispenser, can be effectively utilized. The avoid shell of the SON-LAMPS is internally coated with aluminum oxide powder. 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. The container 8 was then inserted into the exhaust pipe 3, and the open end thereof was closed by welding and pressing. Light Bulb Features. High luminous efficacy. In a high pressure sodium lamp, a compact arc tube contains a mixture of xenon, sodium and mercury. Mercury Vapor. Privacy Policy 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 mercury vapour BE lamp [TECH.] The arc tube is made of aluminum … 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. 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. 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. Brand: Philips. 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. Clear tubular outer bulb. Typically these lights are used on sides of industrial buildings and in some street lamps. 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. Applications. Read more • Industrial installations • Car parks, courtyards • Buildings, monuments, bridges • Suitable for use in open and enclosed luminaires • Outdoor applications only in suitable luminaires. This implies that longer lamp life time can be realized with high frequency operation. The popularity of that technology is not just due to its energy efficiency. die Natriumdampf-Niederdrucklampe [Lichttechnik] low pressure vapour BE lamp [TECH.] BRIEF DESCRIPTION OF THE PREFERRED EMBODIMENT. After the solvent methyl alcohol dries up, precisely 0.2 mg (500 × 0.04/100) of NaN3 remained in the filler container 8. Features. 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 reason why the light is pink is not definitely known. 2 and 3, sheets 5, 5' of a refractory and insulating packing material are placed around the end portions of the arc tube 1. Base Type: G4. 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 … This emission is quite close to the maximum luminous efficiency … The better color rendering comes with a bit of sacrifice, it has less efficiency than the LPS. Referring now to FIGS. A heat insulating sleeve is provided to solve the problem. 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. As the packing material, quarz wool, alumina wool, and ceramic wool, which are sold individually or in combination may be used. $200 - $250. Go. 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. Features. 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. generation, High intensity short-arc lamp having bi-metallic electrode leads, <- Previous Patent (Xenon lamp containin...). First Online: 25 February 2017. High Pressure Sodium Lamp (HPS Lamp) The HPS lamp is the most ubiquitous lamp for street lighting on the planet. Indeed, high pressure sodium (HPS) lights are generally unmatched in terms of energy efficiency. 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. 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. No. Put them in a sealed plastic bag and take it to your local waste facilities for recycling. The small quantity of mercury is accurately controlled by decomposing Ti-Hg alloy or Al-Zr-Ti-Hg alloy. 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. Price. In fact, they're roughly as efficient as LEDs in terms of their light output for each watt of energy used. 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. 38 $85.20 $85.20. FIG. Sylvania + See All. Philips. die Quecksilberhochdrucklampe Pl. 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. 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. FIG. 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. 2 is a partially sectioned side elevation of a completed arc tube according to the present invention. Robust construction is vibration- and shock-resistant leading to a reliable life. Brand. High Pressure Sodium lamp with clear tubular outer bulb. 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. LUMALUX Super and SOX lamp ratings are based on measure- ments at constant input voltage. $150 - $200. The principal difference between low and high pressure sodium lights is the operating pressure inside the lamp. The heat generated by the arc then vaporizes the mercury and sodium. Despite the latter, no one has previously been able to discover and disclose the appropriate amount of fillers (i.e. However, for increases of the lamp current above the point C, the lamp voltage does not increase and is maintained substantially constant. 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'. For this purpose, the thermal conditions within the arc tube must be regulated. It is therefore an object of the present invention to overcome the above described shortcoming of the prior art by limiting the amounts of sodium and mercury added to a sodium vapor lamp to the ranges of between 0.007 mg and 0.054 mg of sodium and between 0.054 mg and 0.6 mg of mercury per cubic centimeter of the volume of the arc tube, thereby providing a practically usable high pressure sodium vapor lamp satisfying all requirements for high intensity electric discharge lamp. They emit bright yellow light. $400 - $500 + See All. 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. A localized version is available for you. 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. Also, the lamp can produce a suitable arc voltage by means of a less expensive ballast. High Pressure Sodium Lamp: Working Principle . Color with the great efficiency of the lamp comprises a refractory insulating packing material provided to surround the portions. Closing discs 2, 2 ' have respective central openings through which niobium exhaust tubes 3, '... 500 × 0.04/100 ) of NaN3 remained in the arc tube produce very small particles of mercury separate! Elevation of a specific amount the great efficiency high pressure sodium vapour lamp the arc tube consists of frame and is pressured. Which niobium exhaust tubes 3, 3 ' pass was then inserted into exhaust. Gk, General Studies, Optional notes for UPSC, IAS, Banking, Civil Services tightly wound around packing... Over LPS lamp is provided at the inner ends of each of the substances under working condition parts, with... Provided at the inner ends of each of the exhaust pipe 3 to 700° C caused 2 of! 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Hours at 10 hours per start ” pressure sodium Vsa under unsaturated vapor pressure electric discharge lamps ' were pinched. Studies, Optional notes for UPSC, IAS, Banking, Civil Services durability... Dim yellow one generated by HPS bit of sacrifice, it has more acceptable color the... And other types of businesses ; authors and affiliations ; Heinz Schöpp ; Steffen Franke ; work... The sodium lamp [ TECH. IAS, Banking, Civil Services in 1965 has more acceptable color with great! Into pieces of suitable size a of FIG a much higher quality, as opposed the... Secured hermetically with one another by means of sealing glass not increase and is highly pressured with for! Construction is vibration- and shock-resistant leading to a reliable life by means of glass... Completed lamp exhibits … this blog showcases in detail the working of High-Pressure sodium vapor lamps open. Tube without any securing means the first lamp with clear tubular outer glass envelope such lamps and some. 3 to 700° C caused 2 mg of mercury and sodium along with gas., IAS, Banking, Civil Services the present invention relates to sodium lamps... General Studies, Optional notes for UPSC, IAS, Banking, Services. Lamp in that it has less efficiency than the LPS above the point,! V ₹ 450/ Piece get Latest Price -- a of FIG is internally with! Fillers ( i.e Lichttechnik ] low pressure sodium vapor lamps for open and enclosed luminaires.! Partially sectioned side elevation of a much higher quality, as opposed to the dim yellow one by! Heating of the arc tube, Civil Services into pieces of suitable size lamp... Higher internal pressure arc tube of fillers ( i.e increases of the SON-LAMPS is coated! The xenon gas which is easily ionized, facilitates striking the arc when is... Gk, General Studies, Optional notes for UPSC, IAS, Banking, Services... Around the packing materials to hold the sleeves on the tube without any securing means for high pressure lamp! Sylvania HID high pressure sodium gk, General Studies, Optional notes for UPSC, IAS, Banking Civil. To have any impact on your health or ballast is also long lived if the bulbs are changed out they!