25
Sound Data
Model Speed
1/1 Octave A-Weighted Sound Pressure (dBA), ref 20µPa
Overall
(dBA)
Noise
Criteria
125Hz 250Hz 500Hz 1kHz 2kHz 4kHz 8kHz
FUD20B
High 57 50 47 44 40 35 24 50 43
Med
57 46 44 40 35 30 17 46 41
Low 48 42 41 35 30 24 6 42 36
FUD25B
High 57 53 50 50 44 40 31 54 49
Med
55 51 49 48 42 38 28 52 47
Low 54 50 48 46 40 35 25 50 45
FUD30B High 57 55 56 53 51 46 38 58 53
Microphone position: 1.5m below the centre of the unit.
(Tested with 2m length duct at the air discharge outlet and 1m length of air return inlet).
To Next Page
Loading...
