Mitsubishi MCFH-24NV - Noise Criteria Curves

7
NOISE CRITERIA CURVES
4
MCFH-13NV -
E4
MUCFH-13NV -
E4
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
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
Test conditions,
Cooling : DB 27: WB 19:\ 
Heating : DB 20: WB 15:
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
High
SPEED
46-47
SPL(dB
(A)) LINE
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
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
Test conditions,
Cooling : DB 35: WB (24:)
Heating : DB 7: WB 6:
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
SPEED
49-49
SPL(dB
(A)) LINE
High
MCFH-18NV -
E3
MUCFH-18NV -
E3
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
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
Test conditions,
Cooling : DB 27: WB 19:\ 
Heating : DB 20: WB 15:
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
High
SPEED
48-48
SPL(dB
(A)) LINE
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
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
Test conditions,
Cooling : DB 35: WB (24:)
Heating : DB 7: WB 6:
High
SPEED
52-52
SPL(dB
(A)) LINE
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