Elma 1350B
side 12
Operating Precautions
1. Wind blowing across the microphone will bring additional extraneous noise.
When using the instrument in the presence of wind , it is a must to mount the
windscreen to not pick up undesired signals.
2. Calibrate the instrument before operation if the instrument was not in use for a long
time or operated in bad environment.
3. Do not store or operate the instrument at high temperature and high humidity
environment.
4. Keep microphone dry and avoid severe vibration.
5. Please take out the battery and keep the instrument in low humidity environment
when not in use.
Measurement
1. Open battery cover and install a 9V battery in the battery compartment.
2. Turn power ON and select the desired response time and weighting. If the sound
source consists of short bursts or only catching sound peak, set response to FAST.
To measure average sound level, use the SLOW setting.
Select A- weighting for general noise sound level and C-weighting for measuring
sound level of acoustic material.
3. Select desired Level.
4. Hold the instrument comfortably in hand and point the microphone at the suspected
noise source , the sound pressure level will be displayed.
5. When MAX/MIN ( maximum, minimum hold ) mode is chosen. The instrument
captures and holds the maximum and minimum noise level for a long period using
any of the time weightings and ranges.
Press the MAX/MIN button 2 seconds to clear the MAX/MIN reading . “ MAX/MIN ”
symbol disappears.
6. Turn OFF the instrument.
