Sharp R-610D Manual descargar pdf (Pagina 118)

UV Glossary

9-6

Part 1105120-01

E 2013 Nordson Corporation

quartz tube (1) A sealed tube made from a silicate material that is filled with a

precise mixture of mercury and various inert gases and sometimes

fitted with electrical connections. The vapor emits light when it is

energized through the use of either a voltage arc or microwave energy.

Often used to refer to the bulb.

(2) An open tube made from a silicate material through which a

substrate can pass. The tube is often placed in front of a UV lamphead

and flooded internally with Nitrogen. Parts traveling through the tube

are then safeguarded from exposure to the oxygen and ozone in the

lamphead cooling air.

reflector Reflect and concentrate the UV light onto the substrate. Rolled from

highly polished aluminum sheet metal or formed from borosilicate into

elliptical or parabolic profiles. Elliptical profiles optimize the

concentration of UV energy that is reflected by guiding the radiation

into a tightly focused UV band while parabolic reflectors result in a

flood of UV light. Holes or slots in the reflector allow cooling air to pass

through. The holes or slots are engineered for size and location to

provide both optimal and balanced airflow across the length of the

bulb.

remote cooling fan (blower) The cooling fan when it is mounted separate from the lamphead and

ducted in to the lamphead.

RF Radio Frequency. Any frequency between normally audible sound

waves and the infrared light portion of the spectrum lying between

10 KHz and 1,000,000 MHz.

RF detector Monitors RF levels in the vicinity of the UV system and signals the

power supply to shut off the UV if RF levels exceed allowable limits.

screen A wire mesh assembly attached to a microwave lamphead that allows

UV to pass through but prevents RF from leaking from the unit.

short UV Refer to UVC.

single An electrode lamphead assembly with a cradle that supports only one

bulb and one reflector.

shutter An assembly designed to block UV light while passing cooling air.

solarization The effect of the UV light on the quartz bulb. Over time, UV light and

heat will cause the quartz to devitrify or revert back to a crystalline and

porous state.

spectral output The various wavelengths of light emitted from a UV bulb.

spectral output efficiency

graph

A graph or chart showing the relative concentration of UV at various

wavelengths for a particular bulb type. Typically, the concentration is

provided as a normalized percentage where the energy is integrated

over 10-nanometer bands to reduce the difficulty of quantifying the

effects of line emission spectra.

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