9 globalspecialties.com
Global Specialties
Measurement
1. Turn on the meter and select the desired response time and
frequency weighting. If sound source consists of short bursts,
set response to
“
FAST”
.
To measure the average sound level,
use the “SLOW”
setting.
Both
A
and
C
weighting model how the human ear perceives
sound, dependent on frequency.
A
is best suited to volumes
below 50 dB and
C
for volumes above 50 dB.
2. Next select the desired decibel range.
3. Hold the instrument comfortably in hand or attach it to a tripod
via the tripod mount.
4. When “MIN MAX”
(maximum and minimum hold mode)
is
displayed, the instrument records and updates the maximum
and minimum noise level over long periods of time. Press
and hold for 2 seconds to clear the stored values.
5. Turn off the instrument.
Operating Precautions
•
Wind blowing across the microphone will bring additional
extraneous noise and will be reduced by use of the provided
windscreen.
•
Calibrate the instrument before operation if the instrument was
not in use for a long time or was operated near or beyond the
environmental limits.
•
Do not store or operate the instrument in high temperature or
high humidity environments.
•
Take out the battery and keep the instrument in low humidity
when not in use.