BSK-EN fire damper
INSTALLATION, MOUNTING AND OPERATING INSTRUCTIONS
Technical data
Construction subject to change
No return possible
Version: 2018-11-14 | Page 7
TECHNICAL DATA
PRESSURE LOSS AND NOISE LEVEL
Flow generated noise, damper width B = 600 mm
Diagram 1: Damper width B=600 mm
Flow generated noise L
WA
[dB(A)]
Radiated noise L
WA Abst
[dB(A)]
Pressure loss
Δ
p
[Pa]
Without
finishing
protective gra-
ting
With finishing
protective grating
(ASG)
Without
finishing
protective grating
With finishing
protective grating
(ASG)
Without
finishing
protective
grating
With finishing
protective grating
(ASG)
B
[mm]
L
WA1
[dB(A)] =
L
WA
[dB(A)] + KF
1
L
WA2
[dB(A)] =
L
WA1
[dB(A)] x KF
2
L
WA Abst1
[dB(A)] =
L
WA1
[dB(A)] +KF
3
L
WA1 Abst2
[dB(A)] =
L
WA2
[dB(A)] +KF
3
Δ
p
1
=
Δ
p x KF
4
Δ
p
2
=
Δ
p
1
x KF
5
200
-3
1.05
-7
2.15
1.66
250
-3
1.07
-7
1.8
1.69
300
-2
1.09
-7
1.55
1.72
350
-2
1.10
-7
1.4
2.85
400
-2
1.11
-8
1.3
2.85
450
-1
1.11
-8
1.2
2.85
500
-1
1.11
-8
1.15
2.85
550
-1
1.11
-8
1.05
2.85
600
0
1.11
-8
1
2.85
650
1
1.11
-9
1
2.85
700
1
1.11
-9
0.95
2.85
750
1
1.11
-9
0.9
2.85
800
1
1.11
-9
0.9
2.85
900
1
1.11
-9
0.85
2.85
1000
2
1.11
-9
0.85
2.85
1100
3
1.11
-9
0.85
2.85
1200
4
1.11
-9
0.85
2.85
1300
4
1.11
-9
0.8
2.85
1400
4
1.11
-9
0.8
2.85
1500
5
1.11
-9
0.8
2.85
Table 3: Correction factor for pressure loss and noise level depending on different widths B [mm], at the same flow rate
Correction values B = 600 mm
with finishing protective grating
L
WA
x 1.11
Δp x 2.85
Radiated noise:
L
WA
- 8 [dB(A)]
