Noise Criteria Curves - Mitsubishi Electric MSH-GA60VB-E1 Service Manual

4

NOISE CRITERIA CURVES

MSH-GA50VB
Test conditions,
Cooling : Dry-bulb temperature 27: Wet-bulb temperature 19:
Heating : Dry-bulb temperature 20: Wet-bulb temperature 15.5:
90
80
70
60
50
40
30
APPROXIMATE
20
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
MSH-GA80VB
Test conditions,
Cooling : Dry-bulb temperature 27: Wet-bulb temperature 19:
Heating : Dry-bulb temperature 20: Wet-bulb temperature 15.5:
90
80
70
60
50
40
30
APPROXIMATE
20
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
OB367D
FAN SPEED SPL(dB(A)) LINE
High
42
500 1000 2000 4000 8000
FAN SPEED SPL(dB(A)) LINE
High
47
500 1000 2000 4000 8000
MSH-GA60VB
Test conditions,
Cooling : Dry-bulb temperature 27: Wet-bulb temperature 19:
Heating : Dry-bulb temperature 20: Wet-bulb temperature 15.5:
90
80
70
NC-70
60
NC-60
50
NC-50
40
NC-40
30
NC-30
APPROXIMATE
20
THRESHOLD OF
HEARING FOR
NC-20
CONTINUOUS
NOISE
10
63 125
0.8m
MICROPHONE
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
6
FAN SPEED SPL(dB(A))
High
45
250 500 1000 2000
BAND CENTER FREQUENCIES, Hz
INDOOR UNIT
WALL
1m
LINE
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
4000 8000