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Sound levels 5CSL0-06B
1.4.7 Sound levels
overall
DISCHARGE SUCTION
DUCT
2m
1.5m
1m
1m
Sound pressure level
Sound Pressure Level (dB re 20μPa )
Sound Pressure Level (dB re 20μPa )
90
80
70
60
50
40
30
20
10
90
80
70
60
50
40
30
20
10
DUCT
Notes:
- Data is valid at nominal operation condition
- Reference accoustic pressure OdB = 20μPa
- Sound level will vary depending on a range of factors such as
the construction(acoustic absorption coefficient) of particular
room in which the equipment is installed.
- The operating conditions are assumed to be standard.
ABNH186HLAD[UB18 NHD] ABNH246HLAD[UB24 NHD] ABNH306GLAD[UB30 NGD]
63 125 250 500 1000 2000 4000 8000
Octave Band Center Frequency (Hz)
NC-70
NC-65
NC-60
NC-55
NC-50
NC-45
NC-40
NC-35
NC-30
NC-25
NC-20
NC-15
Sound Pressure Level (dB re 20μPa )
90
80
70
60
50
40
30
20
10
63 125 250 500 1000 2000 4000 8000
Octave Band Center Frequency (Hz)
ABNH366GLAD[UB36 NGD] ABNH426RLAD[UB42 NRD] ABNH486RLAD[UB48 NRD]
63 125 250 500 1000 2000 4000 8000
Octave Band Center Frequency (Hz)
NC-70
NC-65
NC-60
NC-55
NC-50
NC-45
NC-40
NC-35
NC-30
NC-25
NC-20
NC-15
Sound Pressure Level (dB re 20μPa )
80
70
60
50
40
30
20
10
Approximate
Hearing
Threshold
63 125 250 500 1000 2000 4000 8000
Octave Band Center Frequency (Hz)
122 Duct (H)
NC-65
NC-60
NC-55
NC-50
NC-45
NC-40
NC-35
NC-30
NC-25
NC-20
NC-15
NC-70
NC-65
NC-60
NC-55
NC-50
NC-45
NC-40
NC-35
NC-30
NC-25
NC-20
NC-15
Sound Pressure Level (dB re 20μPa )
Sound Pressure Level (dB re 20μPa )
90
80
70
60
50
40
30
20
10
90
80
70
60
50
40
30
20
10
63 125 250 500 1000 2000 4000 8000
Octave Band Center Frequency (Hz)
63 125 250 500 1000 2000 4000 8000
Octave Band Center Frequency (Hz)
NC-70
NC-65
NC-60
NC-55
NC-50
NC-45
NC-40
NC-35
NC-30
NC-25
NC-20
NC-15
NC-70
NC-65
NC-60
NC-55
NC-50
NC-45
NC-40
NC-35
NC-30
NC-25
NC-20
NC-15