Noise Criteria Curves - Mitsubishi Electric MCFZ-A12WV Service Manual

3

NOISE CRITERIA CURVES

MCFZ-A12WV -
E1
Test conditions,
Cooling : Dry-bulb temperature 27: Wet-bulb temperature 19:
Heating : Dry-bulb temperature 20: Wet-bulb temperature 15:
90
80
70
60
50
40
30
APPROXIMATE
20
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
MCFZ-A24WV -
E1
Test conditions,
Cooling : Dry-bulb temperature 27: Wet-bulb temperature 19:\
Heating : Dry-bulb temperature 20: Wet-bulb temperature 15:
90
80
70
60
50
40
30
APPROXIMATE
20
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
SPEED
SPL(dB ) LINE
(A)
High
46
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
500 1000 2000 4000 8000
SPL(dB ) LINE
SPEED
(A)
High 48
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
500 1000 2000 4000 8000
MCFZ-A18WV -
E1
Test conditions,
Cooling : Dry-bulb temperature 27: Wet-bulb temperature 19:\
Heating : Dry-bulb temperature 20: Wet-bulb temperature 15:
90
80
70
60
50
40
30
APPROXIMATE
20
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
MICROPHONE
1m
5
SPL(dB ) LINE
SPEED
(A)
High
48
500 1000 2000 4000 8000
INDOOR UNIT
WALL
1m
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20