Low Pressure Mercury Vapour Lamp

A mercury vapor lamp whose partial pressure during operation does not exceed 0 001 atmosphere.

Low pressure mercury vapour lamp.

Looking for low pressure mercury lamp. Often called germicidal or ozone absorption lamps they are very stable light sources. Low pressure mercury vapour lamp hg 2 lamp heraeus has developed a compact low pressure low voltage mercury vapour lamp type hg2 principally for use in scientific instrumentation. The first mercury vapor lamps were in a lower pressure tube.

Mercury vapor conducts electricity completing the circuit. Rather than a cold spot the lamp s amalgam spot on pellet regulates mercury vapor pressure during operation and yields up to three times the uvc output of a standard low pressure mercury lamp of the same length. Low pressure mercury vapor lamps do they always produce both 184 5nm and 253 7nm. In low pressure mercury vapor lamps only the lines at 184 nm and 254 nm are present.

It is not currently accepting answers. Explanation of low pressure mercury lamp. Again transition of the electrons requires least amount of input energy from a colliding electron. What s the difference between low pressure lp amalgam low pressure lp and medium pressure mp uv lamps.

Find out information about low pressure mercury lamp. As pressure increases the chance of multiple collisions gets increased. These types of lamps are available in ozone producing and ozone free quartz with a variety of phosphors. Low pressure lp amalgam low pressure lp and medium pressure mp lamps are all mercury based lamps.

This question is off topic. Viewed 18 times 0 begingroup closed. Active 5 days ago. Amalgam lamps use a mercury amalgam mix to control mercury vapor pressure.

The blue green tint of mercury vapor lamps is caused by the strong violet and green lines. One would tip the lamp and electrical contacts on each side of the lamp would send electricity through a liquid mercury which started the lamp. 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 7 nm single line. Lamp output in the uv range depends on the amount of mercury and vapor pressure of mercury in the lamp.

In medium pressure mercury vapor lamps the lines from 200 600 nm are present. Fused silica is used in the manufacturing to keep the 184 nm light from being absorbed. This lamp has a highly stable output predominantly at the 253 7 nm mercury line.