Mitsubishi PLA-A12BA Technical Data Book page 91

PEA-A18AA
External static pressure :
0.020[in.WG](5Pa)
90
80
70
60
50
40
30
APPROXIMATE
20
TERESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
PEA-A18AA
External static pressure :
0.140[in.WG](35Pa)
90
80
70
60
50
40
30
APPROXIMATE
20
TERESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
NOTE: The sound level is measured in an anechoic room where echoes are few, when compressor stops. The sound
may be bigger than displayed level under actual installation condition by surrounding echoes. The sound level
can be higher by about 2 dB than the displayed level during cooling and heating operation.
<60Hz>
NOTCH SPL(dB) LINE
High 37
Middle 33
Low
29
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
500 1000 2000 4000 8000
<60Hz>
NOTCH SPL(dB) LINE
High 39
Middle
35
Low 31
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
500 1000 2000 4000 8000
PEA-A18AA
External static pressure :
0.060[in.WG](15Pa)
90
80
70
60
50
40
30
APPROXIMATE
20
TERESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
PEA-A18AA
External static pressure :
0.200[in.WG](50Pa)
90
80
70
60
50
40
30
APPROXIMATE
20
TERESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
<60Hz>
NOTCH SPL(dB) LINE
High 38
Middle 34
Low
30
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
500 1000 2000 4000 8000
<60Hz>
NOTCH SPL(dB) LINE
High 39
Middle
36
Low 32
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
500 1000 2000 4000 8000
91