Noise Criterion Curves - Mitsubishi Electric PKFY-WL04NLMU-E.TH Technical & Service Manual

4

NOISE CRITERION CURVES

NOISE CRITERION CURVES
PKFY-WL04NLMU-E.TH
90
80
70
60
50
40
30
20
Approximate minimum
audible limit on
continuous noise
10
63 125 250 500
BAND CENTER FREQUENCIES, Hz
PKFY-WL08NLMU-E.TH
90
80
70
60
50
40
30
20
Approximate minimum
audible limit on
continuous noise
10
63 125 250 500
BAND CENTER FREQUENCIES, Hz
TCH122
FAN SPL(dB) LINE
High
30
Medium1 28
26
Medium2
Low 22
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
1000 2000 4000 8000
SPL(dB)
FAN LINE
High 41
Medium1 36
30
Medium2
Low 22
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
1000 2000 4000 8000
PKFY-WL06NLMU-E.TH
90
80
70
60
50
40
30
20
Approximate minimum
audible limit on
continuous noise
10
63 125 250 500
BAND CENTER FREQUENCIES, Hz
PKFY-WL12NLMU-E.TH
90
80
70
60
50
40
30
20
Approximate minimum
audible limit on
continuous noise
10
63 125 250 500
BAND CENTER FREQUENCIES, Hz
6
FAN SPL(dB) LINE
High 36
Medium1 33
28
Medium2
Low 22
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
1000 2000 4000 8000
SPL(dB)
FAN LINE
High 41
Medium1 38
Medium2 34
Low 29
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
1000 2000 4000 8000