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What are UV light systems

UV light systems provide ultravioletfor processing. Spot or wand systems are
(UV) light for curing, materialbenchtop units that provide a UV beam
identification, forensic location,with a small spot size for selective
disinfection and material processingcuring applications. Wall or ceiling
applications. Some UV light systems usemounted UV systems disinfect an air
ultraviolet radiation to initiatestream as UV light irradiates the air
chemical reactions and cure adhesives,circulating through the room. HVAC or
coatings, and resins. Others use theduct-mounted systems are also available.
fluorescent response of chemicals, water
tracers, markers or inks, minerals andUV light systems produce ultraviolet
biological specimens to identify theradiation falling into one to three UV
presence of specific material types. Forbands: UVA, UVB and UVC. UVA is the
example, forensic scientists use UVnear or long wave UV band (~315 to 400
light systems to locate and identifynm). Also known as black light, UVA
materials or trace chemicals in arsonmakes certain pigments fluoresce. UVA
accelerants or tagging dyes. UV light ishas little effect on pathogens and no
also an essential tool in thin-layereffect on human tissue. UVB is the
chromatography (TLC), a process thatmiddle UV band (~280 to 315 nm). It
chemists use to identify the componentsinactivates a moderate amount of
in a mixture. Medical, pharmaceutical,pathogens, but is not as effective as
and public health personnel use UVUVC in destroying bacteria. Prolonged
disinfection systems and ultravioletexposure to UVB results in blistering of
germicidal irradiation (UVGI) tothe skin and cornea damage. UVC is the
sanitize air, water, and transparentgermicidal or short wave UV band (~200
materials or surfaces. UV light systemsto 280 nm). When used correctly, UVC or
are also used in specialized orUVGI inactivates pathogens by destroying
proprietary applications.their DNA and RNA, rendering the
UV light systems are available in amicrobes impotent. The ideal wavelength
variety of configurations. Curingfor eradicating pathogens is 253.7 nm.
chambers consist of a power supply,Some UV light systems also produce
light source and enclosure or chambervisible or UV-visible light in the blue
that provides a work surface and shieldsgreen region (~395 to 455 nm). Visible
the operator from radiation. UVlight is useful for adhesives with dual
conveyors or continuous systems consistUV/visible cure capability. Products
of a belt conveying unit, power supplythat produce ultraviolet light falling
and UV light source, as well as aninto the vacuum UV (VUV) band (100 to
enclosure that is open on both ends,200 nm) are also available.
which allows products or sheets to passSelecting UV light systems requires an
through the system. Hand held oranalysis of lamp output power, lamp
portable UV devices are useful forintensity, and product features. Some
repair and testing in field, laboratory,devices can be programmed or have a
plant floor, and other settings wherecomputer interface for programming,
transportation of large systems iscontrol or data acquisition. Others have
impractical. Flood or focused UV sourcesintegral or optional filters, meters or
or modules are also integrated intimers, and can feed multiple wands.
production lines. Process or lineSpecialized equipment can expose a
mounted UV systems include a powerproduct or material to light from
supply, light source and flange,multiple directions. Pulsed UV light
cartridge mounting or fitting, websystems and products that use light
system, coating line, and conveyor linesemitting diodes (LEDs) as a light source
or tanks that transport chemicals,are also available.
plastic film, or other transparent media



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