Noise Criteria Curves - Mitsubishi Electric MCF-C13UV-E1 Service Manual

4

NOISE CRITERIA CURVES

MCF-C13UV -
E1
Test conditions,
Cooling : Dry-bulb temperature 27: Wet-bulb temperature 19:\
90
80
70
60
50
40
30
APPROXIMATE
20
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
MCF-C18UV -
E1
Test conditions,
Cooling : Dry-bulb temperature 27: Wet-bulb temperature 19:\
90
80
70
60
50
40
30
APPROXIMATE
20
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
SPL(dB ) LINE
NOTCH
(A)
44
High
500 1000 2000 4000 8000
SPL(dB ) LINE
NOTCH
(A)
48
High
500 1000 2000 4000 8000
MUCF-C13UV -
Test conditions,
Cooling : Dry-bulb temperature 35: Wet-bulb temperature (24:)
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
MUCF-C18UV -
Test conditions,
Cooling : Dry-bulb tempreature 35: Wet-bulb temperature (24:)
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
7
E1
SPL(dB
NOTCH
(A)
49
High
250 500 1000 2000
BAND CENTER FREQUENCIES, Hz
E1
SPL(dB
NOTCH
(A)
52
High
250 500 1000 2000
BAND CENTER FREQUENCIES, Hz
) LINE
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
4000 8000
) LINE
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
4000 8000