Noise Criterion Curves - Mitsubishi Electric CITY MULTI PKFY Series Technical & Service Manual

4

NOISE CRITERION CURVES

NOISE CRITERION CURVES
PKFY-WL10VLM-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-WL20VLM-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
OCH711
SPL(dB)
FAN LINE
High 30
Medium1 28
Medium2 26
Low 22
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
1000 2000 4000 8000
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
PKFY-WL15VLM-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-WL25VLM-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
14
SPL(dB)
FAN LINE
High 32
Medium1 29
Medium2 26
Low 22
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
1000 2000 4000 8000
FAN SPL(dB) 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