Mitsubishi PUHZ-RP60VHA Service Manual Page 14

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14
6-3. NOISE CRITERION CURVES
1.5m
1m
MICROPHONE
UNIT
GROUND
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
PUHZ-RP35/50VHA2
PUHZ-RP35/50VHA21
PUHZ-RP35/50VHA3
COOLING
MODE
HEATING
44
SPL(dB)
46
LINE
90
80
70
60
50
40
30
20
10
63 125 250 500 1000 2000 4000 8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µbar)
BAND CENTER FREQUENCIES, Hz
PUHZ-RP60/71VHA2
PUHZ-RP60/71VHA21
PUHZ-RP60/71VHA3
COOLING
MODE
HEATING
47
SPL(dB)
48
LINE
90
80
70
60
50
40
30
20
10
63 125 250 500 1000 2000 4000 8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µbar)
BAND CENTER FREQUENCIES, Hz
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
PUHZ-RP100VHA2
(1)
PUHZ-RP100VHA3
PUHZ-RP100YHA2
(1)
PUHZ-RP100YHA3
COOLING
MODE
HEATING
49
SPL(dB)
51
LINE
90
80
70
60
50
40
30
20
10
63 125 250 500 1000 2000 4000 8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µbar)
BAND CENTER FREQUENCIES, Hz
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
PUHZ-RP125/140VHA2
PUHZ-RP125/140VHA2
1
PUHZ-RP125/140YHA2
PUHZ-RP125/140YHA2
1
COOLING
MODE
HEATING
50
SPL(dB)
52
LINE
90
80
70
60
50
40
30
20
10
63 125 250 500 1000 2000 4000 8000
OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µbar)
BAND CENTER FREQUENCIES, Hz
OC374C--1.qxp 08.2.22 8:18 AM Page 14
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