Noise Criteria Curves - Mitsubishi MCFH-13NV Service Manual

4

NOISE CRITERIA CURVES

MCFH-13NV -
E4
90
80
70
60
50
40
30
APPROXIMATE
20
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
MCFH-18NV -
E3
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
SPEED
(A)
High
46-47
Test conditions,
Cooling : DB 27: WB 19:\
Heating : DB 20: WB 15:
500 1000 2000 4000
SPL(dB ) LINE
SPEED
(A)
High 48-48
Test conditions,
Cooling : DB 27: WB 19:\
Heating : DB 20: WB 15:
500 1000 2000 4000 8000
MUCFH-13NV -
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
8000 63
MUCFH-18NV -
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
E4
SPEED SPL(dB
49-49
High
Test conditions,
Cooling : DB 35: WB (24:)
Heating : DB 7: WB 6:
125 250 500 1000 2000
BAND CENTER FREQUENCIES, Hz
E3
SPL(dB
SPEED
52-52
High
Test conditions,
Cooling : DB 35: WB (24:)
Heating : DB 7: WB 6:
250 500 1000 2000
BAND CENTER FREQUENCIES, Hz
) LINE
(A)
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
4000 8000
) LINE
(A)
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
4000 8000