Mitsubishi Electric MUCFH-13NV-E4, Service Manual

Page: 6 / 72

6
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
OCT
A
VE 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
OCT
A
VE 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 -
MUCFH-18NV -
E4
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
OCT
A
VE 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
OCT
A
VE 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
OB267--1.qxp 01.12.19 2:58 PM Page 6