Mitsubishi PLA-A12BA, Технический справочник

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92
Measurement location
6.6ft
3.3ft
Aux. duct
5ft
test unit
PEAD-A24AA
External static pressure : 50Pa High
Middle
37.0
SPL(dB)
33.0
Low
30.0
LINE
<60Hz>
NOTCH
PEAD-A24AA
External static pressure : 35Pa High
Middle
36.0
SPL(dB)
32.0
Low
30.0
LINE
<60Hz>
NOTCH
90
80
70
60
50
40
30
20
10
63 125 250 500 1000 2000 4000 8000
OCT
A
VE B
A
ND SOUND PRESSURE LEVEL,
dB (0 dB = 0.0002 μ
b
ar)
BAND CENTER FREQUENCIES, Hz
90
80
70
60
50
40
30
20
10
63 125 250 500 1000 2000 4000 8000
OCT
A
VE B
AND SOUND PRESSURE LEVEL,
dB (0 dB = 0.0002 μbar)
BAND CENTER FREQUENCIES, Hz
PEAD-A24AA
External static pressure : 100Pa High
Middle
39.0
SPL(dB)
36.0
Low
31.0
LINE
<60Hz>
NOTCH
PEAD-A24AA
External static pressure : 70Pa High
Middle
38.0
SPL(dB)
34.0
Low
30.0
LINE
<60Hz>
NOTCH
90
80
70
60
50
40
30
20
10
OCT
A
VE B
A
ND SOUND PRESSURE LEVEL,
dB (0 dB = 0.0002 μbar)
90
80
70
60
50
40
30
20
10
OCT
A
VE B
AND SOUND PRESSURE LEVEL,
dB (0 dB = 0.0002 μbar)
63 125 250 500 1000 2000 4000 8000
BAND CENTER FREQUENCIES, Hz
63 125 250 500 1000 2000 4000 8000
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.
APPROXIMATE
TERESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
APPROXIMATE
TERESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
APPROXIMATE
TERESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
APPROXIMATE
TERESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
DOCS14̲15revA.indd 92 DOCS14̲15revA.indd 92 10.8.25 4:09:50 PM 10.8.25 4:09:50 PM