Sound Levels; Noise Levels; Nc Curves - Mitsubishi Electric PEFY-P-VML-E Data Book

2. Sound Levels

2-1. Noise levels

Wall mounted
Measurement location

2-2. NC curves

70
60
50
40
30
20
Approximate minimum
audible limit on
continuous noise
10
63
OCTAVE BAND CENTER FREQUENCIES(Hz)
70
60
50
40
30
20
Approximate minimum
audible limit on
continuous noise
10
63
OCTAVE BAND CENTER FREQUENCIES (Hz)
70
60
50
40
30
20
Approximate minimum
audible limit on
continuous noise
10
63
OCTAVE BAND CENTER FREQUENCIES (Hz)
1.0m
PKFY-P20VAM-E
High speed
Low speed
NC60
NC50
NC40
NC30
NC20
125 250 500 1000 2000 4000 8000
PKFY-P32VGM-E
High speed
Low speed
NC60
NC50
NC40
NC30
NC20
125 250 500 1000 2000 4000 8000
PKFY-P50VGM-E
High speed
Low speed
NC60
NC50
NC40
NC30
NC20
125 250 500 1000 2000 4000 8000
Noise level at anechoic room
(Low-Middle2-Middle1-High)
Model
PKFY-P20VAM-E
PKFY-P25VAM-E
PKFY-P32VGM-E
PKFY-P40VGM-E
PKFY-P50VGM-E
PKFY-P25VAM-E
70
60
50
40
30
20
Approximate minimum
audible limit on
continuous noise
10
63 125 250
OCTAVE BAND CENTER FREQUENCIES (Hz)
PKFY-P40VGM-E
70
60
50
40
30
20
Approximate minimum
audible limit on
continuous noise
10
63 125 250
OCTAVE BAND CENTER FREQUENCIES (Hz)
1- 107
Unit : dB(A)
Noise level (A weighted)
32-33-35-36
33-36-38-41
34-37-40-43
High speed
Low speed
NC60
NC50
NC40
NC30
NC20
500 1000 2000 4000 8000
High speed
Low speed
NC60
NC50
NC40
NC30
NC20
500 1000 2000 4000 8000