UV-C


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UV-C

(meteorology)
Ultraviolet radiation produced by the sun, ranging in wavelength from 200 to 280 nanometers, biologically, it is the most damaging of the sun's rays. Stratospheric ozone strongly absorbs it and, as a result, the solar spectrum at the earth's surface contains only the UV-A and UV-B radiation.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
* Access panels and components that are removable for cleaning and servicing, which also provide access to other areas inside a unit, shall require an interlock switch if the UV-C irradiance exceeds 1.7 [micro]W /[cm.sup.2].
* Polymeric cabinet, structural and current carrying parts and wiring that are subjected to irradiance from a UV lamp system shall be shielded from the UV-C light or constructed of a material that is capable of withstanding UV-C exposure levels expected in the product without degrading.
The enhancements to the UL standard are intended to address safety and will not impact the performance of the air handler or UV-C device.
Should the manufacturer use a lower cumulative UV-C lamp wattage on future production units than the representative tested unit, testing will not be necessary.