Philips lighting company lamp material data sheet lmds lmds. Most modern mercury vapor lamps have this rectification done in them. Our lamps employ a highperformance cathode, so they maintain a stable arc point even after many hours of use unlike conventional lamps. Despite the mandate, there are plenty of old outdoor mercury vapor lights still in use in the united states. 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. The mercury vapor lamp produces a bluish white light by introducing an electric current to mercury vapor within a sealed glass tube. Occupational mercury exposure at a fluorescent lamp. Dec 31, 2018 the lamp gets its state of its operational stability. It was the first metal vapor style of light fixture to be mass produced for general lighting. Mercury vapor lamps, however, may not be good for your health. Nov 14, 20 mercury vapor lamps have found the greatest use in industrial applications and outdoor lighting, because of their low cost and long life, and lamp sizes of up to 1,000 watts. Ultraviolet light is emitted as a current flows through vaporized mercury.
It has a bluish green appearance and features a low initial cost. Mercuryvapor lamp definition of mercuryvapor lamp by. This test is used to determine if an item can be managed of as hazardous or nonhazardous waste. Gasdischarge lamps are a family of artificial light sources that generate light by sending an electric discharge through an ionized gas, a plasma. Mercury lamps use lead solder on the lamp base and mercury in the arc tube. Uv is a selfballasted mercury vapor lamp which emits uva, uvb and heat all in one lamp. Mercury vapor lamps are highintensity discharge lamps that predate modern highpressure sodium and metal halide lamps. Mercury vapor lamps generally contain between 10 and 100 mg of mercury. Mercury vapor lamp article about mercury vapor lamp by. Documents sold on the ansi webstore are in electronic adobe acrobat pdf format, however some iso and iec standards are available. Removing the broken lamp debris and ventilating the area for 15 minutes if possible is recommended. The amount of mercury per case may exceed the iata regulation for.
The 160 watt projects uvb up to several feet from the lamps surface and is ideal for large terrariums or bird aviaries. Ideal for photometric equipment such as spectrophotometers, and other applications where highprecision measurement lamps are. Typically, such lamps use a noble gas argon, neon, krypton, and xenon or a mixture of these gases. Theres a lot of mercury in our world, and handling it needs to be left up to the experts. However, the first lowpressure lamps were sold commercially in the united states in 1901 after john cooper hewitt innovated the lamp s color. Since the light emitted by a mercuryvapor light has a blue tone, this needs to be accounted for, or color corrected as it is called. Mercury vapor lamps benefits, health hazards and pollution. The tubes carry many times the amount of mercury about 115 milligrams depending on the lamp then the metal halide or mercury vapor bulbs about. A fluorescent lamp is a low weight mercury vapour lamp that uses fluorescence to deliver visible light. In lowpressure mercury vapor lamps, only the lines at 184 and 253 nanometers nm are.
While the bulbs are being used, the mercury within them poses. Germicidal lamp components glass filament mount sa fill gas mercury final assembly 3. Germicidal lamp types lamp nomenclature lamp diameter 2. The first practical mercury lamp was the cooperhewitt lamp developed by peter cooper hewitt in 1901. There is a considered view that these lamps have the potential to sap out the energy from us if we get exposed to it on a regular basis. Mercuryvapor lamp an overview sciencedirect topics. Working principle of mercury vapor lamp polytechnic hub. Mercuryvapor lamp a gasdischarge light source in which an electric. A jerome 411 gold film mercury vapor analyzer 10 was used to detect mercury vapor released from the broken bulbs. A halfinch diameter port was installed in the side of the barrel. The lamp is said to be low pressure if the partial pressure of the vapor is below 0.
The watt lamp contains enough mercury to be regulated for transportation by air. Just the name mercury vapor is misleading because there is no vapor in the arc tubes unless the arc is burning. Apr 07, 2020 a mercury vapor lamp is a type of high intensity discharge hid lamp that is predominantly used for commercial and outdoor lighting. Mercury vapor lamps feature low initial cost, but have higher operating costs than hps or metal halide due to its lower efficiency. Mercury lamps get dimmer over time and rarely burn out, so it is wise to replace them and restore light level. Philips mercury vapor lamps all wattages all standard mercury vapor lamps medium and mogul base h33, h36, h37, h38, h39, h43, h44, h45, h46. 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.
M ercury vapo r lig ht so urce university of virginia. A mercury vapor lamp is a type of high intensity discharge hid lamp that is predominantly used for commercial and outdoor lighting. However, the first lowpressure lamps were sold commercially in the united states in 1901 after john cooper hewitt innovated the lamps color. Mercury vapor standard hpl high pressure mercury philips. The lamp gets its state of its operational stability. Mercuryvapor lamp definition is an electric lamp in which the discharge takes place through mercury vapor called also mercury lamp. P a s c o w ill repair or replace, at its option, any part of the product. The photolysis cell is composed of a narrowbore borosilicate glass coil 15 loops each of 8. 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. Philips mercury vapor lamps last at least 24,000 hours. The arc discharge is generally confined to a small fused quartz arc tube mounted within a larger borosilicate glass bulb. A case of 6 watt lamps shipped by air cargo plane requires a declaration of dangerous goods shipping document. A key or legend to abbreviations and acronyms used in the safety data sheet.
But there may be still some invisible ultraviolet radiation during discharging process of mercury vapour so phosphor coating may be provided on outer glass cover to improve efficiency of the mercury lamp. Occupational mercury exposure at a fluorescent lamp recycling. According to the united states government printing office, the energy policy act of 2005 prohibited the manufacture and importation of mercury vapor light ballasts after january 1, 2008. Documents sold on the ansi standards store are in electronic adobe acrobat pdf format, however some iso and iec standards are available from amazon in hard copy format. Engineering high intensity discharge bulletin mercury lamps. Some include additional substances, like mercury, sodium, and metal halides, which are vaporized during startup to become part of the gas mixture. These are similar in operation and appearance to a fluorescent lamp. The determination of mercury by cold vapor atomic absorption. For transport exemptions consult applicable regulations. Components of a germicidal lamp mercury omercury is useful in lighting because it contributes to the bulbs efficient operation and life expectancy. Less than 1% of the mercury in a mercury vapor lamp is in vapor form and will be released if a lamp is accidentally broken.
The clear mercury bulb has a bluish green appearance and the deluxe white has a higher color rendering. 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. Halogen and mercury vapor reptile heat bulbs box turtle world. Eye lighting still offers a full line of mercury replacement lamps. The energy causes a phosphor coating on the inside of the tube to fluoresce, converting the uv.
The electric current excites the mercury vapor in the tube, generating radiant energy, primarily in the ultraviolet uv range. Standard mercury hid lamps operate on existing mercury ballast. The mercury vapor lamp produces a bluish white light by introducing an electric current to mercury vapor within a. The mercury vapor arc gives visible spectra of green, yellow and violet. Mercury vapor lamps have found the greatest use in industrial applications and outdoor lighting, because of their low cost and long life, and lamp sizes of up to 1,000 watts. Self ballasted mercury hid lamps contain an internal ballast that allows it to operate in an incandescent socket. Every step of the process from packaging and transporting mercuryladen products to reclaiming the mercury they contain carries the risk of elemental mercury and mercury vapor release.
Toxic mercury vapors can be released if the lamp is broken. Hach replacement uv for toc analyzers, arc imaging, chromatography, photochemistry, calibration of uv detectors, calibrations of spectrophotometer, and more. The mercury vapor lamp is similar in construction to the sodium vapor lamp. All mercury vapor lamps contain some amount of mercury. Because mercury lamps are so prevalent in current outdoor lighting, and still safe when properly installed in a serviceable fixture, the need for these products will. Pdf the mercury vapor lamp is the oldest high intensity discharge technology lamp that uses an electric arc, and comes in different shapes and. This gives a typical diffuse mediumpressure uv spectrum see figure 3.
This rectification is done by applying phosphor on the inner surface of the bulb. Mercury vapor lamp definition of mercury vapor lamp by. Best applications for mercury vapor lamps eye lighting. The fluorescent lamp is perhaps the best known gasdischarge lamp.
U sing a glove or several folds of thick cloth to protect. Mediumpressure lamps draw a much greater current than lowpressure lamps, leading to a rapid rise in the mercury vapor pressure. Mar 15, 2020 a fluorescent lamp is a low weight mercury vapour lamp that uses fluorescence to deliver visible light. In the mercury lamp, light is produced by the passage of an electric current through a gas or vapor under pressure instead of through a tungsten wire as in the incandescent lamp.
Pdf on mercury vapor lamps and their effect on the smart. It includes information on the total amount of mercury in all lamp products that were sold in the u. Halogen and mercury vapor reptile heat bulbs box turtle. Cathode ray tubes crts from computers, televisions, etc may be handled as either electric lamps or consumer electronics universal waste. A mercury vapor lamp is a gasdischarge lamp that produces light via an electric arc through vaporized mercury. Low pressure mercury lamps have been manufactured in jelight company inc. 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. Ultraviolet energy for disinfection is produced using mercury vapor lamps. Xenon lamps emit a continuous spectrum, ranging from the uv to visible to infrared, with high luminance and high color temperature. Temperature optimum hg vapor pressure the cold spot hg. I am matthew,from haining xushi bulb factory in china. Germicidal lamp definition what does a germicidal lamp do.
The lead solder or mercury vapor should pose little risk of exposure under normal use and handling. Mercury lamp replacements high efficiency choice 12 ez lux converts mercury sockets to highly efficient high pressure sodium lighting direct replacement for mercury lighting more efficient, higher lumens than mercury14% energy cost savings and at least 40% more light iline multivapor converts mercury sockets to. Mercury vapor light source 01202262h 4 w arranty and equipm ent return l im ite d w a rra n ty p a s c o scientific w arrants this product to be free from defects in m aterials and w orkm anship for a period of one year from the date of shipm ent to the custom er. A mercury hollow cathode lamp was used as the light source. It consists of a discharge envelope enclosed in an outer bulb of. Mercury vapor lamps are primarily used in industrial applications and outdoor lighting e. Mercury lamps are becoming harder and harder to find.
A toxicity characteristic leaching procedure tclp test conducted on the lamp for lead or mercury could cause the lamp to be classified as a hazardous waste. When a mercury vapor lamp is to be disposed, it is subject to the current epa toxicity characteristic leaching procedure tclp disposal criteria. Philips mercury vapor 250watt high pressure hid light bulb is ideal for use in landscape lighting, dusk to dawn, roadway, parking lots, floodlights and security fixtures. A protective quartz sleeve, which is transparent to uv light, surrounds the lamp. The agilent model 65 vapor generation accessory the agilent model 65 accessory is used not only for the mercury cold vapor technique but also for the determination of metallic hydrideforming elements. An electricdischarge lamp consisting of an electric arc in mercury vapor in a sealed tube, which in turn may be enclosed in an outer glass envelope. Mercury vapor air sampling results at a fluorescent lamp recycling facility wisconsin, 2017. Philips lighting company lamp material data sheet lmds. Mercury vapor bulb facts 1 self ballasted mercury vapor sbmv bulbs bulbs have a filament inside that works as a ballast. Compared to incandescent lamps, gasdischarge lamps offer higher efficiency, 1 2 but are more complicated to manufacture and most exhibit negative resistance, causing the resistance in the plasma to decrease as the current flow increases. Mercury vapor technology was developed throughout the 1800s in england and germany. Mercury vapour lamp article about mercury vapour lamp by. A mercury vapor lamp is a gas discharge lamp that uses an electric arc through vaporized mercury to produce light. U nscrew the eight screw s that attach the top plate of the light source and rem ove the top plate.
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