UVP Blak-Ray Portable Ultraviolet Lamps - Manual (Page 2)

Ultraviolet Light
Ultraviolet energy cannot be detected by the human eye. Only a blue-hued light
will be visible through the filter of the lamp. This is due to the emission of visible
light from the lamp grid. The integrated filter eliminates most of this visible light
interference and also reduces solarization for prolonged filter life.
Ultraviolet energy is shorter in wavelength than visible violet light, and can be
divided into two groups:
Longwave:
The ultraviolet energy nearest to the visible light range (commonly called
black light) activates fluorescence in numerous natural substances and
manufactured materials.
Shortwave:
The ultraviolet energy farthest from visible light, shorter than rays in
sunlight, is primarily noted for its ability to fluoresce minerals for chemical
analysis. It is also noted for its germicidal effects.
Using the Ultraviolet Lamp
Certain minerals, such as Monazite and Bastnasite of the Cerium group, have no
fluorescent response but will show a dull emerald green color under the unfiltered
shortwave ultraviolet. These ultraviolet lamps are designed for use in as dark an
area as possible for greatest fluorescence on the material and the varying degrees
of brightness of different colors. All lamps have a built-in flashlight. Models UVG-
47 and UVGL-48 detect rare earths with the filter assembly removed.
Lamp Operation
Models UVGL-48 multi-band, UVG-47 shortwave and ML-49 longwave are
ultraviolet lamps designed for operation using:
a) Two J-144 standard 6-volt lantern batteries (not included) in series, or
b) Two J-145 rechargeable 6-volt lantern batteries (not included).
Standard batteries have 20+ hours of life under normal usage. Rechargeable
batteries (5 amp hours) will support approximately eight hours of continuous use,
while 4 amp hour batteries support about 6.5 hours of continuous use.
Rechargeable batteries are good for approximately 500 charges.
NOTE: With use of rechargeable batteries, the optional battery charger is
required. DO NOT attempt to charge standard (non-rechargeable) batteries as this
will result in permanent battery and/or lamp damage.
Battery Replacement
To install batteries, remove the battery cover plate. Place the lamp face down on a
clean, smooth surface. Place the first battery, coil side pointing inward, into the
battery cavity with the positive (+) coil on the bottom right. Place the second
battery on top of the first in the same position. Re-attach cover plate to the lamp.
Charging the Rechargeable Batteries
With the rechargeable batteries inserted into the lamp, plug the charger cord into
the port on the back of the lamp. Plug the charger unit into a wall outlet (for indoor
use only). NOTE: It is very important to charge the batteries for at least 16 hours
for the initial charge, since the initial charge will determine how much of a charge
the battery will hold thereafter. If the initial charge is less than 16 hours, the
battery will not hold its maximum charge and will need recharging more frequently.
Lamp Handle
Adjust the lamp to the desired beaming angle (up, down or straight ahead) by
simply moving your hand forward or backward on the curved carrying handle.
Carry the lamp with the arm hanging straight down for maximum comfort.
Lamp Selector Switch
The lamp uses a 3-position switch. In the center position, the lamp is OFF. To
operate the ultraviolet light, push switch to the left. To operate the flashlight, push
switch to the right. Be sure to turn switch off when not in use.
Using the UVGL-48 Wavelength Selector
This is a multi-band ultraviolet lamp, half longwave and half shortwave. The
wavelength selector slides up and down to allow wavelength selection. The upper
half of the lamp (flashlight end) is shortwave, the lower half is longwave. The
wavelength selector snaps on or off easily. When not in use, store the selector in
the battery compartment between the battery and lamp housing wall.
Filter Assembly Replacement
TO REMOVE: Hold the lamp handle in one hand directly over the switch. With the
other hand, grab the top half of the filter frame. With a rolling motion, pull the filter
frame away from lamp body until it breaks free from its position. Then lift off.
TO REPLACE: Align the two locking nipples located inside the top end of the lamp
housing with the filter assembly, then apply pressure on the bottom part of filter
frame until it snaps into a locked position. Shortwave filters on UVG-47 and
UVGL-48 have a rated average life of 1000 hours. The ML-49 has no separate
filter; its BLB tube contains the filter.