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5. SOUND LEVELS
YKB/YLM 2nd
PFFY
MEE15K022
Approximate minimum
audible limit on
continuous noise
Approximate minimum
audible limit on
continuous noise
Approximate minimum
audible limit on
continuous noise
Approximate minimum
audible limit on
continuous noise
Approximate minimum
audible limit on
continuous noise
Approximate minimum
audible limit on
continuous noise
PFFY-P50VLRMM-E
External static pressure : 20Pa
Power source : 220, 230, 240V, 50/60Hz
PFFY-P50VLRMM-E
External static pressure : 40Pa
Power source : 220, 230, 240V, 50/60Hz
PFFY-P50VLRMM-E
External static pressure : 60Pa
Power source : 220, 230, 240V
, 50/60Hz
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 = 20μPa
OCTAVE BAND CENTER FREQUENCIES (Hz)
High speed
Low speed
Middle speed
NC20
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 = 20μPa
OCTAVE BAND CENTER FREQUENCIES (Hz)
High speed
Low speed
Middle speed
70
60
50
40
30
20
63
125
250
500
1000
2000
4000
8000
10
0
NC60
NC50
NC40
NC30
NC20
OCT
A
VE BAND PRESSURE LEVEL
(dB) 0dB = 20μPa
OCTAVE BAND CENTER FREQUENCIES (Hz)
High speed
Middle speed
Approximate minimum
audible limit on
continuous noise
Low speed
PFFY-P63VLRMM-E
External static pressure : 20Pa
Power source : 220, 230, 240V, 50/60Hz
PFFY-P63VLRMM-E
External static pressure : 40Pa
Power source : 220, 230, 240V, 50/60Hz
PFFY-P63VLRMM-E
External static pressure : 60Pa
Power source : 220, 230, 240V
, 50/60Hz
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 = 20μPa
OCTAVE BAND CENTER FREQUENCIES (Hz)
High speed
Low speed
Middle speed
NC20
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 = 20μPa
OCTAVE BAND CENTER FREQUENCIES (Hz)
High speed
Low speed
Middle speed
70
60
50
40
30
20
63
125
250
500
1000
2000
4000
8000
10
0
NC60
NC50
NC40
NC30
NC20
OCT
A
VE BAND PRESSURE LEVEL
(dB) 0dB = 20μPa
OCTAVE BAND CENTER FREQUENCIES (Hz)
High speed
Middle speed
Approximate minimum
audible limit on
continuous noise
Low speed
