Dymax WIDECURE UV Conveyor
14
DEFINITION OF TERMS
Bulb
- Light source generating ultraviolet, visible, and infrared radiant energy from burning matter stimulated by
electrical power conditioned by a proper power supply which is an integral part of a Lamp. 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).
Intensity
- a measure of light energy over the unit of surface area (usually surface at the specified working
distance from the bottom of a Reflector Housing) in W/cm
2
or mW/cm
2
. This measure may also be referred to as
“irradiance”.
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.
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 and practically nothing can be sensed below 200 nm. This is due to the use of
ozone-blocking quartz bulb envelope (See Ozone).
1.
Ultraviolet A
(UV-A) - UV of long wavelength from approximately 400 to 320 nm of the spectral band . This is
the predominant energy produced by Dymax flood lamps.
2.
Ultraviolet B
(UV-B) - UV of medium wavelength from approximately 320 to 280nm - Dymax flood lamps
produce some amount of their energy within this bandwidth.
3.
Ultraviolet C
(UV-C) - UV of short wavelength below 280 nm.
4.
Visible
– Energy that can be seen by the human eye (400-700 nm).
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).
Ozone
- Oxidizing agent (O
3
) produced by the action of ultraviolet radiant energy (below 250 nm) or electrical
corona discharge of oxygen on air.
OSHA
1910.145: “Regulation of Accident prevention Signs and Tags” defines the following
headers as:
WARNING
–
Used when there is a hazardous situation that has some probability of severe injury.
CAUTION
–
Used to indicate a hazardous situation that may result in minor or moderate injury.
NOTICE
–
Used to convey a message related directly or indirectly to the safety of personnel, or
protection of property.
