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Mitsumi electronic PLA-ABA Manuale Utente

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Pagina di 52
50
90
80
70
60
50
40
30
20
10
63
125
250
500
1000
2000
4000
8000
APPROXIMATE
TERESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCT
A
VE
B
AND SOUND PRESSURE LEVEL,
 dB (0 dB = 0.0002 
μ
bar)
BAND CENTER FREQUENCIES, Hz
PEA-A18AA
External static pressure :
0.060[in.WG](15Pa)
High
Middle
38
SPL(dB)
34
Low
30
LINE
<60Hz>
NOTCH
90
80
70
60
50
40
30
20
10
63
125
250
500
1000
2000
4000
8000
APPROXIMATE
TERESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCT
A
VE
B
AND SOUND PRESSURE LEVEL,
 dB (0 dB = 0.0002 
μ
bar)
BAND CENTER FREQUENCIES, Hz
PEA-A18AA
External static pressure :
0.020[in.WG](5Pa)
High
Middle
37
SPL(dB)
33
Low
29
LINE
<60Hz>
NOTCH
90
80
70
60
50
40
30
20
10
63
125
250
500
1000
2000
4000
8000
APPROXIMATE
TERESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCT
A
VE
B
AND SOUND PRESSURE LEVEL,
 dB (0 dB = 0.0002 
μ
bar)
BAND CENTER FREQUENCIES, Hz
PEA-A18AA
External static pressure :
0.200[in.WG](50Pa)
High
Middle
39
SPL(dB)
36
Low
32
LINE
<60Hz>
NOTCH
90
80
70
60
50
40
30
20
10
63
125
250
500
1000
2000
4000
8000
APPROXIMATE
TERESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCT
A
VE
B
AND SOUND PRESSURE LEVEL,
 dB (0 dB = 0.0002 
μ
bar)
BAND CENTER FREQUENCIES, Hz
PEA-A18AA
External static pressure :
0.140[in.WG](35Pa)
High
Middle
39
SPL(dB)
35
Low
31
LINE
<60Hz>
NOTCH
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.