1. Specifications
1
1
2
3
4
5
I - 90
SM830080
1-8
Noise Criterion Curves
4-Way Air Discharge Semi-concealed Type
MODEL
: SPW-XR253GH56
SOUND LEVEL
: HIGH
37 dB(A),
NC 30
LOW
31 dB(A),
NC 22
CONDITION
: Center,
Under the unit 1.5 m
SOURCE
: 220 - 230 - 240 V,
1 Phase,
50 Hz
MODEL
: SPW-XR363GH56 , XR483GH56
SOUND LEVEL
: HIGH
43 dB(A),
NC 36
LOW
36 dB(A),
NC 24
CONDITION
: Center,
Under the unit 1.5 m
SOURCE
: 220 - 230 - 240 V,
1 Phase,
50 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
0275_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-20
NC-40
NC-50
NC-30
0274_X_I
REMARKS: 1. Value obtained in the actual place where the unit is installed may be slightly higher than the values
shown in this graph because of the conditions of operation, the structure of the building, the background
noise and other factors.
2. The test results were obtained from an anechoic room.
To evaluate “Noise level” the maximum number of the measured OCTAVE BAND SOUND PRESSURE LEVEL is used.
Read the number on each BAND CENTER FREQUENCIES (horizontal axis) ranging from 63 Hz to 8000 Hz and select
the maximum value (vertical axis) among them.
NOTE
