Model407780‐ENv2.31/14
6
SEL Mode
In the SEL mode (Sound Exposure Level) – the display indicates the constant sound level in decibels
which, if lasting for one second, would deliver the same amount of acoustical energy as that delivered
over the entire measurement period. If no run time has been accumulated the display shows dashes.
1. Turn the meter on by pressing the green on/off button.
2. Select the SEL mode by pressing the Leq SEL SPL button until SEL appears on the LCD.
3. Select the desired Frequency Weighting as needed (A or C).
Change the Frequency Weighting by pressing the 'A/C' button. The 'A' or 'C' icon will display on
the right-hand area of the LCD.
4. Select the desired Response Time as needed (Fast or Slow)
Change the Response Time by pressing the 'FAST/SLOW/IMPULSE' button. The 'FAST'
'SLOW' or IMP icon will display.
5. Select the desired Run Time. There are 13 preset time settings available (To perform a manual
recording select the 24 hour interval)
Change the run time by pressing the INTEG TIME button. The run time will appear in the middle
of the LCD. Press the ▲or▼ button to select the preset time setting.
6. Hold the instrument comfortably in hand and away from your body or position it on a tripod. Point
the microphone toward the noise source
7. Press ►
button to begin measuring. The run time counter will zero and
begin counting. While running the meter will display ► at the top of the
display.
The meter will stop automatically after the preset time interval has expired
and will display ■ and the SEL for the recording interval.
It is also possible to datalog the session. Simply press RECORD before
pressing ►
. The RECORD icon will appear on the bottom right of the
display and flash while the session is in progress. For instructions on retrieving the recorded data
please refer to the software manual on the CD included with your meter.
1 second 3 seconds 10 seconds 30 seconds 1 minute
5 minutes 8 minutes 10 minutes 30 minutes 15 minutes
30 minutes 1 hour 8 hours 24 hours
SEL
SEL
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