D Y MA X. COM
W I D ECU RE
®
C ONV EY O R U S ER G U I D E
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Definition of Terms
Brightness, also known as Luminance - Description of energy in the visible region of the spectrum (approximately from 400 to 700
nm) and recorded in photometric units. “
Intensity
” (see below) of visible light energy is called Illuminance.
Bulb - a light source generating ultraviolet, visible, and infrared radiant energy from burning matter stimulated by electrical power
conditioned by a proper power supply. A light source is usually placed into a reflector (of various geometry) to increase light source
efficiency by collecting and directing radiant energy of selected spectra (for a given curing process).
Dose - irradiance integrated over time, or Irradiance (W/cm
2
) x Time (s) = Dose (Joules/cm
2
).
NOTE: Watt is the power that gives rise to the production of energy at the rate of 1-joule (J) per second (s).
Intensity - a measure of light energy over the unit of surface area (usually the surface at the specified working distance from the
bottom of the reflector housing) in W/cm
2
or mW/cm
2
.
Ozone - oxidizing agent (O
3
) produced by the action of ultraviolet radiant energy (below 185 nm) or electrical corona discharge of
oxygen on air.
Ultraviolet (UV) - The invisible region of the spectrum just beyond the violet end of the visible region. Wavelength ranges in general
from 1.0 to 400 nm. Dymax bulbs do not radiate energy in deep ultraviolet; there are very minute amounts below 220 nm.
•
Ultraviolet A (UV-A) - UV of long wavelength from within approximately 400 to 320 nm of the spectral band - predominately
produced by Dymax conveyors and flood systems.
•
Ultraviolet B (UV-B) - UV of medium wavelength from within approximately 320 to 280 nm - Dymax conveyor and flood arrays
produce some amount of their energy within this bandwidth.
•
Ultraviolet C (UV-C) - UV of short wavelength below 280 nm (we say from 280 to 200 nm)
–
a large amount of this energy is present in the sunlight.
•
Visible - Energy that can be seen by the human eye (400-700 nm).
OSHA 1910.145: “Regulation of Accident
Prevention
Signs and Tags” defines the following
headers as:
•
WARNING
–
is used when there is a hazardous situation that has some probability of severe injury.
•
CAUTION - is used to indicate a hazardous situation that may result in minor or moderate injury.
•
NOTICE - is used to convey a message related directly or indirectly to the safety of personnel, or protection of property.
