Sharp R-610D Manual descargar pdf (Pagina 114)

UV Glossary

9-2

Part 1105120-01

E 2013 Nordson Corporation

dose (dosage) Refer to energy density.

dose rate (dosage rate) Refer to irradiance.

dynamic exposure Exposure to a varying irradiance. It occurs when a lamphead passes

over a substrate without pausing or when a substrate passes under a

lamphead without pausing.

dynamic range The span between the minimum irradiance and the maximum

irradiance to which a radiometer will accurately respond. Measured in

joules/cm

effective cure length The length of a bulb that delivers optimal UV output. For electrode

bulbs, the effective cure length is always less than the arc length. For

microwave bulbs, the effective cure length is the length of the bulb.

electrodeless A microwave-powered UV system.

electromagnetic spectrum The full wavelength range of electromagnetic radiation, including

microwave, ultraviolet, visible, and infrared energy.

energy density The total amount of UV energy delivered to a particular area,

measured in joules/cm

. Also referred to as total energy. Improperly

referred to as dose.

flood An unfocused band of UV light that is more evenly and diffusely

distributed across the width of the reflector.

flux The flow of photons, measured in einsteins/second.

focal distance (length) The perpendicular distance from the edge of the lamphead to the point

where the UV light emitting from the bulb converges. This is the

location of maximum UV concentration.

focus The band where the UV energy reflected from the lamphead is at the

highest concentration.

frequency The number of times a periodic wavelength cycle occurs in one

second, measured in Hertz (Hz).

gallium A bluish-white metallic element used in additive mercury bulbs. The

gallium additive provides a yellowish tint to an un-energized UV bulb

and a violet coloration to the UV output. Gallium bulbs have a spectral

peak around 417 nm and a spectral concentration between 400 and

450 nm. They are often used when deeper cure is required or with

white coatings containing titanium oxides. In some industries,

microwave gallium bulbs are referred to as V bulbs.

1 2 ... 109 110 111 112 113 114 115 116 117 118 119 ... 143 144

Sin comentarios

Sharp R-610D Manual Pagina 114