Low pressure lamps

Classical mercury low pressure Lamps offer an excellent efficiency. 40% of the electrical power is converted into UVC radiation at 254 nm. When using synthetic quartz as the lamp material, VUV radiation at 185 nm is also emitted.


Two lamp types with different bases, connections and lengths are available:
Classical Mercury low-pressure lamps of high efficiency, spectrum: line at 254nm, ozone-free
Classical UVC low-pressure lamps with synthetic quartz tube, spectrum: lines at 254nm and 185nm, ozone-generating

These lamps can be also supplied as UV immersion lamps.

Heraeus also offers low pressure amalgam lamps with increased efficiency.

Technical data:

Typical spectra of low pressure lamps:






Standard Low-pressure lamps

	Ozone-free	Ozone-generating
Spectrum: wavelength	254 nm	185 nm, 254 nm
Illuminated lenght *	10 - 150 cm	10 - 150 cm
Electrical power	5 - 80 W	5 - 80 W
Typical UV efficiency at 254 nm	40 %	40 %
Typical efficiency at 185 nm, natural quartz glass	-	approx. 6 %
Typical efficiency at 185 nm, Synthetic quartz glass	-	approx. 9 %
Specific UVC flux	0,1 - 0,4 W/cm	0,1 - 0,4 W/cm
Ambient application temperature	max. 40 °C	max. 40 °C
Operating life	Up to 9,000 hours with a maximum fall-off of 30 % in UVC intensity	Up to 9,000 hours with a maximum fall-off of 30 % in UVC intensity
High-Output Low-pressure lamps		g g gc g
	Ozone-free	Ozone-generating
Spectrum: wavelength	254 nm	185 nm, 254 nm
Illuminated lenght *	10-150 cm	10-150 cm
Electrical power	10-150 W	10-150 W
Typical UV efficiency at 254 nm	25-35%	25-35 %
Typical efficiency at 185 nm, natural quartz glass	-	approx. 6 %
Typical efficiency at 185 nm, Synthetic quartz glass	-	approx. 9 %
Specific UVC flux	0,1-0,4 W/cm	0,2-0,5 W/cm
Ambient application temperature	max. 40°C	max. 40°C
Operating life	Up to 9,000 hours with a maximum fall-off of 30 % in UVC intensity	Up to 9,000 hours with a maximum fall-off of 30 % in UVC intensity

 
* Other lengths on request

Further information: Standard low pressure lamps Product Brochure Ultraviolet Lamps for disinfection and oxidation (PDF 1,2 MB) Flyer Standard Low Pressure Lamps (PDF 1,1 MB)