NOISE CRITERIA CURVES
6
4
90
80
70
60
50
40
30
20
10
63
125
250
500
1000
2000
4000
8000
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCT
A
VE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
Test conditions,
Cooling : Dry-bulb temperature 35
:
Wet-bulb temperature 24
:
53
SPL(dB(A))
LINE
COOLING
FUNCTION
High
FAN SPEED
MUCF-GA60VB
NOISE CRITERIA CURVES
90
80
70
60
50
40
30
20
10
63
125
250
500
1000
2000
4000
8000
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCT
A
VE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
Test conditions,
Cooling : Dry-bulb temperature 35
:
Wet-bulb temperature 24
:
52
SPL(dB(A))
LINE
COOLING
FUNCTION
High
FAN SPEED
MUCF-GA50VB
OUTDOOR UNIT
MICROPHONE
1m
49
SPL(dB(A))
LINE
COOLING
FUNCTION
High
FAN SPEED
90
80
70
60
50
40
30
20
10
63
125
250
500
1000
2000
4000
8000
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCT
A
VE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
Test conditions,
Cooling : Dry-bulb temperature 35
:
Wet-bulb temperature 24
:
MUCF-GA35VB
OB383A--1.qxp 06.5.9 7:08 PM Page 6