They emit a characteristic monochromatic yellow light that is ideal for certain exterior street and area lighting applications. Best applications for mercury vapor lamps eye lighting. Find out information about high pressure mercury vapor lamp. Place the adjustable slit another 10 cm or so beyond it, in such a way that the slit is well illuminated. Difference between sodium vapor lamp and mercury lamp. After the experiment, leave the highpressure mercury vapour lamp to cool. Current, input hid mercury vapor, metal halide, high pressure sodium. Mercury vapor lamps are becoming obsolete due to the higher efficiency and better color balance. Among the light sources in use for general lighting, high pressure mercury vapour h. A mercuryvapor lamp is a gas discharge lamp that uses an electric arc through vaporized. Fluorescent lamp low pressure mercury vapour answers. Such lamps generate an atmosphere of mercury vapour at high pressure. The outer bulb may be clear or coated with a phosphor. Some items of laboratory equipment contain mercury vapour lamps to generate uv light.
Introduction the mercury vapor lamp is a high intensity discharge lamp. Mercury vapor lamps are bright, longlasting light sources that are often used to light large areas such as streets, gyms, sports arenas, banks, or stores. Hps retrofits for mercury lamps, and will operate on all mercury reactor ballasts. Investigating the spectrum of a high pressure mercury lamp.
Lamps now available range in size from 40 watts to watts. The basic high pressure mercury lamp was introduced on a large scale in the 1930s, since when new and improved types have continually been introduced the technical developments in the 1930s that made the high. The inner surface of the lamp is coated with a fluorescent and often slightly phosphorescent coating made of varying blends of metallic and rareearth. Many of the mercury lamp types will use a brass base and have leadsoldered connections to that base. High pressure mercury lamps kolorlux standard 50w, 80w, 125w, 250w and 400w kolorlux deluxe 50w, 80w, 125w, 250w and 400w data sheet product information kolorlux mercury vapor lamps are often used due to their relative efficiency.
A mercury vapor lamp is a type of high intensity discharge hid lamp that is typically used for commercial and outdoor lighting. High intensity discharge lamps ceramic metal halide lamps are commonly known under a variety of trademarks for example osram use the powerstar and powerball trademarks, whilst ge use constantcolour cmh, there is also the generic name of hcit. However, the first low pressure lamps were sold commercially in the united states in 1901 after john cooper hewitt innovated the lamp s color. Hach replacement uv for toc analyzers, arc imaging, chromatography, photochemistry, calibration of uv detectors, calibrations of spectrophotometer, and more. Mercury vapor standard hpl high pressure mercury philips.
Figure 614 shows the basic configuration of a hid lamp. 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. Difference sodium vapour lamp mercury lamp light source works by electric discharge passage of electricity through sodium vapours at highlow pressure works through the. High pressure sodium bulbs to mercury vapor conversion light. This gives a typical diffuse mediumpressure uv spectrum see figure 3. A mercuryvapor lamp is a gas discharge lamp which uses mercury in an excited state to produce light. Phosphor coated bulbs offer a better color rendering index than either high or low pressure sodium lamps. The mercury vapour lamp in construction is similar to sodium vapour lamp. Dec, 2017 friends is video me ham discuss karenge mercury vapour lamp ke bare me. Mercuryvapor lamp a gasdischarge light source in which an electric. For the first time it combines a very high pressure mercury discharge lamp with extremely short and stable arc gap with a regenerative chemical cycle keeping the discharge walls free from.
Best applications standard mercury vapor lamps have found greatest use in industrial applications and outdoor lighting, because of their low cost and long life 16,000 to 24,000 hours, with lamp sizes ranging from 40 to 1,000 watts. It also needs to be underlined that mercury is not the only evil in the mercury filled lamps, but other chemicals present in the bulbs have the potential to cause sufficient damage to health. Highpressure mercuryvapor lamp definition lamp that produces light as a result of an electrical discharge, generated between two electrodes, in a highpressure mercury vapor that is contained in a transparent bulb. High pressure mercury vapor lamp definition lamp that produces light as a result of an electrical discharge, generated between two electrodes, in a high pressure mercury vapor that is contained in a transparent bulb.
Mercury lamps get dimmer over time and rarely burn out, so it is wise to replace them and restore light level. The common fluorescent lamp is actually a low pressure mercury arc lamp. The arc discharge is generally confined to a small fused quartz arc tube mounted within a larger borosilicate glass bulb. When a mercury vapor lamp is to be disposed, it is subject to. High pressure mercury vapour lamps for general lighting. Sont son high pressure sodium philips philips lighting. Lucalox high pressure sodium lamps offer very high efficiencies and. The lamps can be constructed to emit primarily in the uva around 400 nm or uvc around 250 nm. Dec 21, 2015 electric lamps part 07 operation of high pressure mercury vapour hpmv lamp inventor of mercury vapour hpmv lamp john thomas way london developed a mercury vapor lamp in the year1860.
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. Per unit area, the effective germicidal output of a mediumpressure lamp is much greater up to 30 times than a lowpressure lamp, allowing high flow rates to be treated using fewer lamps. It creates a very bright light by using an arc through vaporized mercury in a high pressure tube. The lamps are selected and positioned automatically. The broken line corresponds to atmospheric pressure. About 74% of these are mercury lamps, 2% are ultraviolet lamps, and 4% are high pressure sodium lamps. Mercury vapor lamps are high intensity discharge lamps that predate modern high pressure sodium and metal halide lamps. Does a metal halide and mercury vapor use the same ballast. A mercury vapor no, the output voltage is too low for the lamp to start. Mercury vapor lamps mercuryvapor lamp latest price.
It was the original metal vapor style of light fixture to be mass produced for general purpose lighting. Pdf measuring the pressure in ultrahighpressure mercury lamps. A discharge tube containing an inert gas and a small quantity of liquid mercury. As pressure increases the chance of multiple collisions gets increased. Mercury vapor technology was developed throughout the 1800s in england and germany. The original lamps were selfballasted meaning they didnt require any external.
A fluorescent lamp refers to a low pressure mercuryvapor. It uses an arc through vaporized mercury in a high pressure tube to create very bright light directly from its own arc. The mercury vapor lamp is a high intensity discharge lamp. Figi separately measured the quantity of nongaseous mercury in the lamp, which is usually in the form of a ball of amalgam a compound of mercury, tin and zinc. Son son high pressure sodium philips philips lighting. High pressure sodium bulbs to mercury vapor conversion light bulbs genesis lamp offers a wide selection of hid high intensity discharge light bulbs, including. Since the light emitted by a mercuryvapor light has a blue tone, this needs to be accounted for, or color. High intensity discharge hid4 is the term commonly used for several types of lamps, including metal halide, high pressure sodium, and mercury vapor lamps. They are commonly used in public parking lots, roadways, and other security areas.
A fluorescent lamp tube is filled with a gas containing low pressure mercury vapor and argon, xenon, neon, or krypton. Tekizoo uva uvb sun lamp high intensity selfballasted heat basking mercury vapor lamplightbulb for reptile and amphibian. Mercury vapor is the original and now the oldest hid technology and has been supplanted by other hid types that offer higher efficiencies and better color properties. Low pressure mercury lamps lightsources and strategic partner, lighttech manufacture a low pressure mercury lamp lp hg lamp that provides highly efficient short wavelength ultraviolet energy. A mercury vapour lamp is a highpressure electric arc discharge lamp that provides intense illumination over a selected range of wavelengths. If a lamp breaks, ventilate the room for 30 minutes and remove the parts, preferably with gloves. Mercury lamps are used primarily for general street, parking and hibay industrial lighting applications where good efficiency and long life is desired and. Mercury vapour pressure is typically around ten atmospheres. A common discharge lighting luminary for use in an indoor sports environment would typically be a high intensity discharge hid type lamp, such as metal halide or high pressure sodium.
During the last 15 years the luminous efficacy and the colour appearance of these mercury vapour lamps have been much improved by the application of europiumactivated phosphors. Our lp hg lamp converts forty percent of the electrical power into uvc radiation for germicidal applications. After the experiment, leave the high pressure mercury vapour lamp to cool. It uses an arc through vaporized mercury in a high pressure tube to create very bright light directly. 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. It may be necessary to incline the tilting rider a little. Set up the highpressure mercury lamp roughly in the middle of the 1m optical bench. This is different from fluorescents which use the mercury vapor arc to create a weaker light. Once the lamp has warmed up and the mercury is fully vaporised, the discharge operates in unsaturated mercury vapour at a pressure varying from 18 bar for the smallest types, to 2 bar for the largest. This was a tubular source about 4 feet long which produced light that was distinctly bluishgreen in color at a high efficacy compared with the incandescent lamps of those days. Spectrum on page not representative of mercury vapor lamp whoever added the visible spectrum to the right of the page, please consider replacing it with a high pressure mercury vapor spectrum.
Persons exposed to elemental mercury vapor do not pose a significant risk of secondary contamination to response personnel outside the hot zone. Choose from our hpl high pressure mercury philips you are now visiting our global professional lighting website, visit your local website by going to the usa website philips lighting. Ballasts of the correct size and type are required to operate mercury lamps on any standard electrical circuit to. Two continuum lamps, a deuterium and a tungstenhalogen lamp, in combination with a monochromator generate light of 520 nm bandwidths in the spectral range from 190800 nm. Dec 31, 2018 in case of fluorescent lamp the mercury vapour pressure is maintained at lower level such that 60% of the total input energy gets converted into 253. Working principle of mercury vapor lamp polytechnic hub. The mercury vapor lamp works by creating an electric current to mercury vapor within a sealed glass jacket. Selfballasted mercury lamp applications the most common applications for selfballasted style mercury vapor lamps are. In mediumpressure mercuryvapor lamps, the lines from 200600 nm are present. Mercury use in lighting this fact sheet summarizes the use of mercury in lighting devices, such as fluorescent lamps, high intensity discharge hid lamps e. Current, input hid mercury vapor, metal halide, highpressure sodium. Mercury vapour lamps operating at high pressure but below 100 watts per centimetre of arc length and with arc tubes of quartz glass are classified as the mb style. All high intensitydischarge lamps produce light from an arc tube that is usually contained in an outer glass bulb. The luminous efficacy of any discharge lamp falls as wattage is reduced.
It includes information on the total amount of mercury in all lamp products that were sold in the u. This is also standard practice in mercury lamps designed for use in colder atmospheres. Mercuryvapor lamp techsciencenews online reference. This lamp can cause unwanted interference to the smartgrid.
In these lamps, a material, such as sodium, mercury, or metal halide, is added to the arc tube. Low pressure mercury lamps have been manufactured in jelight company inc. Mercuryvapor lamp an overview sciencedirect topics. The spectrum added is that of a triphoshor fluorescent and that is a low pressure mercury vapor lamp. Mercury vapour lamp article about mercury vapour lamp by. The inner surface of the lamp is coated with a fluorescent and often slightly phosphorescent coating made of varying blends of metallic and rareearth phosphor salts. It may be necessary to incline the tilting rider a. A third, high pressure mercury vapour lamp provides high energy for scanning by fluorescence.
The mercury vapour indicator mvi is primarily used to monitor environments where mercury or any of the mercury compounds are produced, processed or stored and applications where mercury vapours may pose a health hazard to personnel. In 1935 the modern, highpressure mercury vapor lamp was developed, which works by electrifying solid mercury, which then vaporizes in a highpressure tube and produces a bright light between two electrodes. High pressure sodium lamps or hps lamps electrical4u. The mercury lamp was the first kind of metal vapour light source that was mass produced for general lighting. All highintensitydischarge lamps produce light from an arc tube that is usually contained in an outer glass bulb. Mercury vapour lamps dealing with breakages some items of laboratory equipment contain mercury vapour lamps to generate uv light. The first practical mercury lamp was the cooperhewitt lamp developed by peter cooper hewitt in 1901. In case of fluorescent lamp the mercury vapour pressure is maintained at lower level such that 60% of the total input energy gets converted into 253.
An 80w mercury vapour lamp pushed beyond its limits. A sodiumvapor 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. Put them in a sealed plastic bag and take it to your local waste facilities for recycling. During operation the body of the lamp will get hot so that there is a risk of getting burned. An arc is established between two electrodes in a gasfilled tube, causing a metallic vapor to produce radiant energy.
Ges hid line includes multivapor metal halide for sparkling white light and high. The first highpressure mercury lamp, similar to the ones used today, was introduced in 1934 in the 400watt size. The fact that the high pressure mercury vapour lamp could be introduced successfully as a practical light source, is due to the favourable spectral light distribution, the high luminous efficiency, the relatively small lamp dimensions and the possibility of an extensive range. Chemical waste collection request or a chemical collection request form pdf. Engineering high intensity discharge bulletin mercury lamps. Browse the sont products and find the product that you are looking for by using the compare option. The extensive use of the mercury vapor lamp depends entirely upon the versatility of the mercury vapor as regards pressure, temperature, voltage and other characteristics, each change resulting in a lamp of different spectral quality and efficiency. The mercury vapor lamp is similar in construction to the sodium vapor lamp. Gk, general studies, optional notes for upsc, ias, banking, civil services. Mercury vapor lamps feature low initial cost, but have higher operating costs than hps or metal halide due to its lower efficiency. Introduction this technical statement is intended to advise specifiers and users of the relative merits of the various high intensity discharge lamps and control gear options that will provide the best economic and light technical benefits for their installations.
Highpressure mercuryvapor lamps are those lamp commonly used for general lighting purposes. Pdf on mercury vapor lamps and their effect on the smartgrid plc. Do not operate the high pressure mercury vapour lamp continuously for longer than 10 minutes. Aug 20, 2016 a fluorescent lamp tube is filled with a gas containing low pressure mercury vapor and argon, xenon, neon, or krypton. Sodium vapour at high pressure and temperature is highly reactive with glass, which would rapidly fail as a result. Do not use where people will remain for more than a few minutes. Well if youre at all familiar with what i do then you would have been correct in guessing, not very long. Do not touch the body of the lamp after switching on. Product information high pressure and specification. A wide variety of mercury vapour lamp options are available to you, such as voltage. Oct 14, 2014 high pressure mercury gasdischarge lamp. A lamp breaking is extremely unlikely to have any impact on your health.
The reason for the creation of this second category of mercury lamp was to allow the efficacy to be maintained as high as possible for low wattage sources. The clear mercury bulb has a bluish green appearance and the deluxe white has a higher color rendering. A lamp in which light is produced by an electric arc between two electrodes in an ionized mercury vapor atmosphere. Mediumpressure lamps draw a much greater current than lowpressure lamps, leading to a rapid rise in the mercury vapor pressure. Standard mercury vapor lamps have found greatest use in industrial applications and outdoor lighting, because of their low cost and long life 16,000 to 24,000 hours, with lamp sizes ranging from 40 to 1,000 watts. It consists of a discharge envelope enclosed in an outer bulb of. Mercury vapor lamps benefits, health hazards and pollution.
1173 1523 126 94 1673 1395 1071 636 608 1491 796 1638 894 1182 93 437 1077 707 471 955 722 204 161 142 552 1373 1486 666 1218 392 1061 562 151 7 976 1235 867 989 1327 576 989 573 1384 555 267 1172 480 347