1 - 24
PE
F
Y
MEE15K022
5. SOUND LEVELS
YKB/YLM 2nd
5-2. NC curves
PEFY-P20,25VMR-E-L/R
External static pressure : 5Pa
Power source : 220V
, 50/60Hz
PEFY-P20,25VMR-E-L/R
External static pressure : 5Pa
Power source : 230V
, 50/60Hz
PEFY-P20,25VMR-E-L/R
External static pressure : 5Pa
Power source : 240V
, 50Hz
PEFY-P32VMR-E-L/R
External static pressure : 5Pa
Power source : 220V
, 50/60Hz
PEFY-P32VMR-E-L/R
External static pressure : 5Pa
Power source : 230V
, 50/60Hz
PEFY-P32VMR-E-L/R
External static pressure : 5Pa
Power source : 240V
, 50Hz
Approximate minimum
audible limit on
continuous noise
70
60
50
40
30
20
63
125
250
500
1000
2000
4000
8000
10
0
NC60
NC50
NC40
NC30
NC20
Approximate minimum
audible limit on
continuous noise
OCT
A
VE BAND PRESSURE LEVEL
(dB) 0dB = 20
Pa
OCTAVE BAND CENTER FREQUENCIES (Hz)
High speed
Low speed
Middle speed
NC20
Approximate minimum
audible limit on
continuous noise
70
60
50
40
30
20
63
125
250
500
1000
2000
4000
8000
10
0
NC60
NC50
NC40
NC30
Approximate minimum
audible limit on
continuous noise
OCT
A
VE BAND PRESSURE LEVEL
(dB) 0dB = 20
Pa
OCTAVE BAND CENTER FREQUENCIES (Hz)
High speed
Low speed
Middle speed
NC20
Approximate minimum
audible limit on
continuous noise
70
60
50
40
30
20
63
125
250
500
1000
2000
4000
8000
10
0
NC60
NC50
NC40
NC30
Approximate minimum
audible limit on
continuous noise
OCT
A
VE BAND PRESSURE LEVEL
(dB) 0dB = 20
Pa
OCTAVE BAND CENTER FREQUENCIES (Hz)
High speed
Low speed
Middle speed
Approximate minimum
audible limit on
continuous noise
70
60
50
40
30
20
63
125
250
500
1000
2000
4000
8000
10
0
NC60
NC50
NC40
NC30
NC20
Approximate minimum
audible limit on
continuous noise
OCT
A
VE BAND PRESSURE LEVEL
(dB) 0dB = 20
Pa
OCTAVE BAND CENTER FREQUENCIES (Hz)
High speed
Low speed
Middle speed
NC20
Approximate minimum
audible limit on
continuous noise
70
60
50
40
30
20
63
125
250
500
1000
2000
4000
8000
10
0
NC60
NC50
NC40
NC30
Approximate minimum
audible limit on
continuous noise
OCT
A
VE BAND PRESSURE LEVEL
(dB) 0dB = 20
Pa
OCTAVE BAND CENTER FREQUENCIES (Hz)
High speed
Low speed
Middle speed
NC20
Approximate minimum
audible limit on
continuous noise
70
60
50
40
30
20
63
125
250
500
1000
2000
4000
8000
10
0
NC60
NC50
NC40
NC30
Approximate minimum
audible limit on
continuous noise
OCT
A
VE BAND PRESSURE LEVEL
(dB) 0dB = 20
Pa
OCTAVE BAND CENTER FREQUENCIES (Hz)
High speed
Low speed
Middle speed
