OSTBERG LPK Series, Installation And Directions For Use, Page: 5 / 8

S O U N D D A T A
LPK 4” A, 64 CFM, 0,5 H
2
O L
pA
L
wA
tot dB (A) 63 125 250 500 1K 2K 4K 8K
To environment 42 49 20 28 39 37 43 47 33 27
Inlet 58 38 50 46 52 52 48 46 42
Outlet 62 48 54 52 54 58 53 50 45
LPK 4” B, 131 CFM, 0,5 H
2
O L
pA
L
wA
tot dB (A) 63 125 250 500 1K 2K 4K 8K
To environment 48 55 23 33 46 45 51 50 42 37
Inlet 67 46 59 57 63 59 56 56 55
Outlet 73 56 62 63 66 66 64 62 61
LPK 5” A, 95 CFM, 0,3 H
2
O L
pA
L
wA
tot dB (A) 63 125 250 500 1K 2K 4K 8K
To environment 40 47 28 34 39 39 43 41 32 25
Inlet 57 41 48 50 53 50 46 47 32
Outlet 62 46 54 54 55 56 50 55 39
LPK 5” B, 144 CFM, 0,7 H
2
O L
pA
L
wA
tot dB (A) 63 125 250 500 1K 2K 4K 8K
To environment 47 54 23 37 45 45 50 48 40 33
Inlet 66 47 56 59 62 57 54 53 49
Outlet 71 53 64 63 65 65 61 60 56
LPK 6” B, 205 CFM, 0,6 H
2
O L
pA
L
wA
tot dB (A) 63 125 250 500 1K 2K 4K 8K
To environment 50 57 29 45 47 48 53 52 46 39
Inlet 71 56 64 67 64 58 56 58 56
Outlet 74 58 63 68 67 67 60 63 61
LPK 6” D, 220 CFM, 1,1 H
2
O L
pA
L
wA
tot dB (A) 63 125 250 500 1K 2K 4K 8K
To environment 50 57 37 47 48 49 50 50 48 46
Inlet 74 52 64 70 69 61 60 61 61
Outlet 78 61 68 73 73 70 67 66 66
The sound data have been compiled by means of sound
measurements methods as follows:
Pressure and drop: SS-ISO 5801.
Determination of acoustic sound level in duct:
SS-EN ISO 5136.
Determination of acoustic sound level in reverberation
room: SS-EN ISO 3741. D E S I G N A T I O N S
LwATot
: Total A-weighted sound power level dB(A)
(ref 10 -12 W)
=
the sum of the sound power level in the
octave ranges.
LwA
: A-weighted sound power level in octave range
dB(A)(ref 10 -12 W).
LpA
: A-weighted sound pressure level in dB(A) accor-
ding to normed A-weightening correction and relating
to an effective absorption area of 20 m
2 with half sphe-
rical translation at a distance of 3 metres.
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1270140_LPK_UL_utg1.qxp 2009-09-04 10:23 Sida 5