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MC Low Pressure Mercury Vapour
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Updated
21-VII-2021 |
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Mercury Vapour lamps operating at low pressure and with discharge tubes of soft glass are classified as the MC family. The vapour pressure is typically just a few hundredths of an atmosphere, these conditions leading to maximum efficacy for the generation of UV-C radiation at 253.7nm. The positive column types generally dissipate fewer than 10 watts per centimetre of discharge length, but there also exist certain variants based on glow discharge or even arc discharge types, in which the mercury vapour pressure remains low due to the relatively large envelope dimensions.
The MC class of discharge lamp was specifically created to drive fluorescent lamp technology. Because of the great variety of fluorescent lamps, these are classified elsewhere on this site under the section of that name. There do exist however a few specialised low pressure mercury lamps having no fluorescent coating, or in which the coating is optimised for the generation of ultraviolet radiation. Such lamps are catalogued under this page. |
| | Glow Discharge |
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GE |
400W |
| S-1 Ultraviolet Sunlamp, Thermionic discharge |
| ~1950 |
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GE |
85W |
| S-2 Ultraviolet Sunlamp, Thermionic discharge |
| 1939 |
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GE |
4W |
| G4S11 Ozone Producing Thermionic discharge |
| 1959 |
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Thorn |
4W |
| M2 miniature ultraviolet source |
| 1975 |
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Osram |
9W |
| HNV miniature Woods' glass blacklight |
| 1943 |
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GE |
4W |
| F5000 DC Discharge Fluorescent Blacklight |
| 1950 c. |
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SPO Svet |
4W |
| LUF-4 DC Discharge Fluorescent Blacklight |
| 1989 |
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SELA Abadie |
4W |
| Abadie 6002 DC Fluorescent Blacklight |
| 1992 |
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| | Positive Column Discharge |
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Osram |
13W |
| HgN miniature UV-A source |
| 1950 |
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Philips |
6W |
| TUV Germicidal lamp with internal resistance |
| 1992 |
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Philips |
6W |
| TW Blacklight lamp with internal resistance |
| 1983 |
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Osram |
10W |
| HNS 10W/U OFR U-Tube Germicidal Ozone Free |
| 1973 |
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