I - 90
SM830082
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1. Specifications
1-10 Noise Criterion Curves
●
4-Way Air Discharge Semi-concealed Type
MODEL
: XH2442
SOUND LEVEL
: HIGH
38 dB(A),
NC 31
LOW
31 dB(A),
NC 23
CONDITION
: Center,
Under the unit 4.9 ft.
SOURCE
: 208 - 230 V,
1 Phase,
60 Hz
MODEL
: XH4242
SOUND LEVEL
: HIGH
45 dB(A),
NC 38
LOW
34 dB(A),
NC 27
CONDITION
: Center,
Under the unit 4.9 ft.
SOURCE
: 208 - 230 V,
1 Phase,
60 Hz
MODEL
: XH3642
SOUND LEVEL
: HIGH
44 dB(A),
NC 37
LOW
33 dB(A),
NC 25
CONDITION
: Center,
Under the unit 4.9 ft.
SOURCE
: 208 - 230 V,
1 Phase,
60 Hz
60
50
40
30
20
10
OCTAVE BAND SOUND PRESSURE LEVEL, dB
(0 dB = 0.0002
µ
bar)
63
125
250
500
1000 2000 4000 8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
BAND CENTER FREQUENCIES, Hz
NC-20
NC-40
NC-50
NC-30
2108_X_I
60
50
40
30
20
10
OCTAVE BAND SOUND PRESSURE LEVEL, dB
(0 dB = 0.0002
µ
bar)
63
125
250
500
1000 2000 4000 8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
BAND CENTER FREQUENCIES, Hz
NC-40
NC-50
NC-30
2109_X_I
NC-20
60
50
40
30
20
10
OCTAVE BAND SOUND PRESSURE LEVEL, dB
(0 dB = 0.0002
µ
bar)
63
125
250
500
1000 2000 4000 8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
BAND CENTER FREQUENCIES, Hz
NC-40
NC-50
NC-30
2110_X_I
NC-20