Octave Band Center Frequency (Hz)
20
30
40
50
60
70
80
90
100
125 250 500 1000 2000 4000 8000
NR-30
NR-35
NR-40
NR-45
NR-50
NR-55
NR-60
NR-65
NR-70
NR-75
NR-80
NR-85
NR-90
Octave Band Center Frequency (Hz)
20
30
40
50
60
70
80
90
100
125 250 500 1000 2000 4000 8000
NR-30
NR-35
NR-40
NR-45
NR-50
NR-55
NR-60
NR-65
NR-70
NR-75
NR-80
NR-85
NR-90
Octave Band Center Frequency (Hz)
20
30
40
50
60
70
80
90
100
125 250 500 1000 2000 4000 8000
NR-30
NR-35
NR-40
NR-45
NR-50
NR-55
NR-60
NR-65
NR-70
NR-75
NR-80
NR-85
NR-90
Octave Band Center Frequency (Hz)
20
30
40
50
60
70
80
90
100
125 250 500 1000 2000 4000 8000
NR-30
NR-35
NR-40
NR-45
NR-50
NR-55
NR-60
NR-65
NR-70
NR-75
NR-80
NR-85
NR-90
Octave Band Center Frequency (Hz)
20
30
40
50
60
70
80
90
100
125 250 500 1000 2000 4000 8000
NR-30
NR-35
NR-40
NR-45
NR-50
NR-55
NR-60
NR-65
NR-70
NR-75
NR-80
NR-85
NR-90
Octave Band Center Frequency (Hz)
20
30
40
50
60
70
80
90
100
125 250 500 1000 2000 4000 8000
NR-30
NR-35
NR-40
NR-45
NR-50
NR-55
NR-60
NR-65
NR-70
NR-75
NR-80
NR-85
NR-90
Octave Band Sound Power Level (dB = 10E-6μW/m
2
)
Octave Band Sound Power Level (dB = 10E-6μW/m
2
)
Octave Band Sound Power Level (dB = 10E-6μW/m
2
)
Octave Band Sound Power Level (dB = 10E-6μW/m
2
)
Octave Band Sound Power Level (dB = 10E-6μW/m
2
)
Octave Band Sound Power Level (dB = 10E-6μW/m
2
)
ARNU07GTU*4 ARNU09GTU*4 ARNU12GTU*4
ARNU18GTT*4 ARNU24GTT*4
9.2 Sound Power Levels
Notes:
• Data is valid at diffuse field condition
• Data is valid at nominal operating condition
• Sound level can be increased in static pressure mode or
used air guide.
• Sound power level is measured on the rated condition in the
reverberation rooms.
•
Sound level will vary depending on a range of factors such as
the construction (acoustic absorption coefficient) of particular
room in which the equipment in installed.
•
Reference acoustic intensity 0dB = 10E-6μW/m
2
Model
Sound Power Levels dB(A)
High Fan Speed
ARNU07GTU*4 50.0
ARNU09GTU*4 53.0
ARNU12GTU*4 57.0
ARNU18GTT*4 59.0
ARNU24GTT*4 62.0
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