Sound Level Characteristics; Sound Pressure Level; Wng 7 - Electra WNG 7 Service Manual

6.

SOUND LEVEL CHARACTERISTICS

6.1

Sound Pressure Level

Figure 1. Wall Mounted
Figure 3. Ducted
6.2 Soud Pressure Level Spectrum (Measured as Figure 1)

WNG 7

NC (Noise Criteria) Curves
90
80
70
60
50
40
30
Approximate xim mate
threshold of ho old of
20
rearing for ring ng for
continuous ont ntinuous
noise no oise
10
63 125 125 125 250 250 250 500 1000 2000 4 500 1000 2000 4000 8000 500 1000 2000
Octave Band Center Frequencies [Hz] e Band Center Frequenci e Band Center Frequenc
FAN SPEED
HI
ME
LO
Service Manual - WNG
Sp pectrum (Measured
es s
NC65 NC65
NC60 NC60
NC55 NC55
NC50 NC50 0
NC45 NC4 C4
NC N NC40
N NC35
NC30
NC25
NC20
NC15
LINE
Revision Y05-03
CONTENT
SOUND LEVEL CHARACTERISTICS
Figure 2. Floor Mounted e 2 2. Floor Mounted
Figure Figure Figure 4. Cassette re 4. Casset ett
m (Me (Me d
WNG 9
NC (Noise Criteria) Curves
90 90
80 8 8
70
60
50
40
30
Approximate
threshold of
20
rearing for
continuous
noise
10
63 125 250 500 1000 2000 4000 8000
Octave Band Center Frequencies [Hz]
NC65
NC60
NC55
NC50
NC45
NC40
NC35
NC30
NC25
NC20
NC15
6-1