The ZenithTM ultraviolet meter is
a sensitive, hand-held, ultraviolet
meter; used to check the intensity
of aging ultraviolet lamps and survey
rooms utilizing air sanitizers to
ensure that the ultraviolet radiant
exposure of personnel within the
treated area is within acceptable
limits.
The ZenithTM ultraviolet meter
provides accurate and easy-toread
levels of intensity. A narrow
ultraviolet bandpass filter in combination
with the photodiode detector
makes the ZenithTM insensitive to
ambient lighting within the area
being surveyed. The ZenithTM
monitor is powered by a single 9-
volt alkaline battery and an internal
battery-saver will automatically
shut off the meter after 30 minutes
of inactivity.
The two models of the ZenithTM
ultraviolet meter are the 30-0081
and 30-0083. The 30-0081 is
preferable when the main requirement
is for safety measurements
of low-level radiation (below 1
microwatt). If the 30-0083 has to
be used for low-level measurement,
the operator should ensure
that the meter is not reading some
of the longer wavelength ultraviolet
light radiated by fluorescent lamps
in the measurement area. Switch
off any fluorescent lamps that may
interfere with the required measurements