What is the mercury lamp?
mercury vapor lamp is a type of high intensity lamp (HID), which is mainly used for commercial and outdoor lighting. It was the first metal style of the steam of light to be made for general lighting. The mercury lamp produces bluish white light by introducing electric current into the mercury steam in a closed glass tube. The bulb consists of an inner tube, called an arc tube, and an outer tube.
The arc tube is usually made of quartz and has an electrode at each end. Inside the arch tube is a small amount of mercury and buffer gas, usually argon. The creation gas helps to carry the discharge while the lamp warms up, which can take up to 10 minutes. It also creates the heat needed to evaporate the mercury.
The outer lip of the mercury vapor is generally filled with nitrogen or a mixture of nitrogen and argon. Its task is to provide thermal insulation and protect users from ultraviolet (UV) radiation, which is a common funny mercury lighting. This protective shell can be made of clearAbout borosilicate glass, but often covered with phosphorus surface for repairing color and adding additional UV protection.
As with fluorescent lamps, mercury pairs require lamps to supply the correct voltage and regulate the current into the electrodes. The load is designed to be used with a specific size or power. The use of a mercury steam lamp with a ballast, which was made for a higher power bulb, could damage it or cause it to explode. The use of too small ballast will result in lower light output and can shorten the life of the bulb.
When using the right ballast and properly maintained, the lamp has a long life. The average life expectancy is more than 24,000 hours or almost three years of continuous use. If they are not damaged, these lamps usually do not burn completely.causes a phenomenon called lumen. In general, lumen depreciation causes a lamp with a pair of mercury to produce 50 percent less light every five years.
As more efficient types of luminaires with lighting of hidden lighting have entered the market, mercury lamps have become less popular. Although the bulbs are still widely available, the United States banned the sale of mercury couples in 2008. According to the ban, existing accessories can remain in operation, but as they burn out, they must be replaced by newer and more efficient lighting alternatives. Similar laws were passed in the European Union, which set 2015 as the year when mercury lamps will no longer be approved for lighting purposes.