OSTBERG BFS User Manual

SOUND DATA
The sound data have been compiled by means of sound measu-
rements methods as follows:
Pressure and drop: ISO 5801.
Determination of acoustic sound level in duct: EN ISO 5136.
Determination of acoustic sound level in reverberation room:
EN ISO 3741.
DESIGNATIONS
L
wA
Tot: Total A-weighted sound power level dB(A)(ref 10
-12
W)=
the sum of the sound power level in the octave ranges.
L
wA
: A-weighted sound power level in octave range dB(A)(ref
10
-12
W).
L
pA
: A-weighted sound pressure level in dB(A) according to nor-
med A-weightening correction and relating to an effective
absorption area of 20 m
2
with half spherical translation at a dis-
tance of 3 metres.
CK 125 C EC
10V, 105 l/s, 200 Pa L
pA
L
wA
tot dB (A) 63 125 250 500 1K 2K 4K 8K
Environment 51 58 33 32 45 53 54 48 51 44
Inlet 76 54 63 69 71 69 66 63 51
Outlet 75 50 61 68 71 68 68 62 54
8V, 85 l/s, 135 Pa
Environment 46 53 25 29 41 43 50 43 46 38
Inlet 71 51 59 65 66 63 61 57 44
Outlet 71 46 56 64 67 63 63 56 47
6V, 67 l/s, 75 Pa
Environment 40 47 22 25 37 40 43 36 37 31
Inlet 64 46 54 58 59 56 53 47 34
Outlet 64 42 50 59 60 56 56 57 36
4V, 47 l/s, 37 Pa
Environment 31 38 22 22 28 29 35 28 28 28
Inlet 55 39 45 51 50 46 41 34 19
Outlet 56 37 42 51 52 46 45 32 20
CK 150 B EC
10V, 129 l/s, 200 Pa L
pA
L
wA
tot dB (A) 63 125 250 500 1K 2K 4K 8K
Environment 45 52 43 32 45 46 44 46 44 33
Inlet 80 56 64 76 75 71 67 64 54
Outlet 79 53 64 72 73 72 72 67 57
8V, 105 l/s, 135 Pa
Environment 41 48 29 28 41 41 40 40 39 30
Inlet 73 52 61 68 69 65 62 58 46
Outlet 74 48 62 69 68 67 66 60 48
6V, 81 l/s, 80 Pa
Environment 35 42 22 26 37 36 35 33 33 28
Inlopp 67 47 58 63 62 58 55 49 35
Outlet 67 45 58 61 61 59 58 50 36
4V, 61 l/s, 40 Pa
Environment 29 36 22 21 28 29 28 27 27 28
Inlet 59 41 51 54 54 49 46 36 22
Outlet 59 37 50 53 53 52 50 37 22
19

OSTBERG BFS Specifications

General

Brand	OSTBERG
Model	BFS
Category	Fan
Language	English