Mitsubishi PLA-A12BA Technical Data Book page 90

PEA-A12AA
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-A12AA
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.
90
<60Hz>
NOTCH SPL(dB) LINE
High 33
Middle 28
Low
23
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
500 1000 2000 4000 8000
<60Hz>
NOTCH SPL(dB) LINE
High 34
Middle 29
Low
24
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
500 1000 2000 4000 8000
6.6ft
Measurement location
PEA-A12AA
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-A12AA
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
Aux. duct
test unit
3.3ft
<60Hz>
NOTCH SPL(dB) LINE
High 33
Middle 28
Low
23
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
500 1000 2000 4000 8000
<60Hz>
NOTCH SPL(dB) LINE
High 35
Middle 31
Low
25
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
500 1000 2000 4000 8000