Elma 1350C, User Manual

Page: 21 / 24

Elma 1350C side 21
Operating precautions
1. Wind blowing across the microphone would bring additional extraneous noise.
Once using the instrument in the presence of wind, it is a must to
mount the windscreen to avoid picking up undesirable signals.
2. Calibrate the instrument before operation if the instrument was not in use for a long
time or operated at 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. Turn on and select the desired response time and weighting. If the
sound source consists of short bursts, 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.
2. Select desired Level.
3. Hold the instrument comfortably in hand or fix on tripod and point the microphone at
the suspected noise source, the sound pressure level will be displayed.
4. 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 button 2 seconds to clear the MAX/MIN reading.
“ MAX/MIN ” symbol disappears.
5. Turn OFF the instrument.