Airwell ONG 12, Technical Manual

Page: 56 / 142

6-1
SOUND LEVEL CHARACTERISTICS
Revision
0
6. SOUND LEVEL CHARACTERISTICS
6.1 Sound Pressure Level
Figure 1. Wall Mounted Figure 2. Floor Mounted
Figure 3. Ducted Figure 4. Cassette
6.2 Soud Pressure Level Spectrum (Measured as Figure 1)
FLO
7
FLO
9
NC (Noise Criteria) Curves
NC15
NC20
NC25
NC30
NC35
NC40
NC45
NC50
NC55
NC60
NC65
10
20
30
40
50
60
70
80
90
63 125 250 500 1000 2000 4000 8000
Approximate
threshold of
rearing for
continuous
noise
Octave Band So
und Press. Level [dB re 20 mPa]
Octave Band Center Frequencies [Hz]
FAN SPEED LINE
HI
ME
LO
NC (Noise Criteria) Curves
NC15
NC20
NC25
NC30
NC35
NC40
NC45
NC50
NC55
NC60
NC65
10
20
30
40
50
60
70
80
90
63 125 250 500 1000 2000 4000 8000
Approximate
threshold of
rearing for
continuous
noise
Octave Band So
und Press. Level [dB re 20 mPa]
Octave Band Center Frequencies [Hz]
2. Floor Mounted
re 4. Casset
pectrum (Measured
s
N
NC4
NC50
NC55
NC60
NC65
125 250 500 1000 2000
mate
old of
ng for
ntinuous
oise
e Band Center Frequenc
8
90
re 20 mPa]
e 2
ett
Sp d
es
N
NC
C4
0
125 250 500 1000 2000 4
xim
ho
ring
ont
no
e Band Center Frequenci
8
re 20
available
e
Figure Figure
m (Me (Me
Data is not av Da
a
i
ot
D
ta
is
not
Data is n
ta
ata
Dat
t
at
av
va va va