Electra OU10-47T ST Manual de servicio Pagina 24

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6-1
SOUND LEVEL CHARACTERISTICS
SM SAFRPM 1-A.0 GB
6. SOUND LEVEL CHARACTERISTICS
6.1 Sound Pressure Level
6.2 Sound Pressure Level Spectrum
(Measured as Figure 1)
SAF024 SAF045
Hz, BAND CENTER FREQUENCIES
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
-70NC
-60NC
-50NC
-40NC
-30NC
-20NC
MICRO BAR0.002 dB re , OCTAVE BAND SOUND PRESSURE LEVEL
Hz, BAND CENTER FREQUENCIES
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
-70NC
-60NC
-50NC
-40NC
-30NC
-20NC
MICRO BAR0.002 dB re , OCTAVE BAND SOUND PRESSURE LEVEL
FAN SPEED LINE
HI
ME
LO
Figure 1
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