–18–
OCT
A
VE BAND PRESSURE LEVEL< dB> 0dB = 0.0002
µ
bar
OCT
A
VE BAND PRESSURE LEVEL< dB> 0dB = 0.0002
µ
bar
PEH-P8YE
PEH-P10YE
Measurement condition
Measurement condition
NC60
NC50
NC30
NC20
Approximate minimum
audible limit on
continuous noise
70
60
50
40
30
20
63
125
250
500
1000
2000
4000
8000
10
OCTAVE BAND CENTER FREQUENCIES <Hz>
NC60
NC50
NC40
NC30
NC20
70
60
50
40
30
20
63
125
250
500
1000
2000
4000
8000
10
OCTAVE BAND CENTER FREQUENCIES <Hz>
Approximate minimum
audible limit on
continuous noise
External static pressure: 50Pa
External static pressure: 150Pa
External static pressure: 50Pa
External static pressure: 150Pa
1m
2m
1.5m
Measured point
Aux. duct
1m
2m
1.5m
Measured point
Aux. duct
NC40
[6] NC Curve (Indoor unit)