User Manual 5.1-1 (2018-09) 10
Subject to change
Series FK92K
FK90K fire dampers
Dimensioning (3)
Pressure drop with ventilation duct connection on one side, and free incoming flow with protective grille
300
500
1000
Volu
me
flow
V [m³/h]
700
2000
3000
4000
5000
1
2
3
5
10
20
30
100
200
300
400
600
800
Width [mm]
Pressure drop p [Pa]
S
Flow velocity v
[m/s]
A
2
2.5
4
5
6
7
8
9
100
125
150
150
225
250
Height H [mm]
Height H [mm]
125
100
150
175
200
225
250
100
200
3
1.5
175
4
40
150
50
500
700
250
150
H \ W 100 150 200 250 300 400 500 600 700 800
100
0.010 0.015 0.020 0.025 0.030 0.040 0.050 0.060 0.070 0.080
125
0.013 0.019 0.025 0.031 0.038 0.050 0.063 0.075 0.088 0.100
150
0.015 0.023 0.030 0.038 0.045 0.060 0.075 0.090 0.105 0.120
175
0.018 0.026 0.035 0.044 0.053 0.070 0.088 0.105 0.123 0.140
200
0.020 0.030 0.040 0.050 0.060 0.080 0.100 0.120 0.140 0.160
225
0.023 0.034 0.045 0.056 0.068 0.090 0.113 0.135 0.158 0.180
250
0.025 0.038 0.050 0.063 0.075 0.100 0.125 0.150 0.175 0.200
Inflow cross-section
A
A
[m²]
H \ W 100 150 200 250 300 400 500 600 700 800
100
0.008 0.012 0.016 0.020 0.024 0.032 0.040 0.048 0.056 0.064
125
0.010 0.015 0.020 0.025 0.030 0.040 0.050 0.060 0.070 0.080
150
0.012 0.018 0.024 0.030 0.036 0.048 0.060 0.072 0.084 0.096
175
0.014 0.021 0.028 0.035 0.042 0.056 0.070 0.083 0.098 0.112
200
0.016 0.024 0.032 0.040 0.048 0.064 0.080 0.095 0.111 0.128
225
0.018 0.027 0.036 0.045 0.054 0.072 0.090 0.107 0.125 0.143
250
0.020 0.030 0.040 0.050 0.060 0.080 0.100 0.119 0.139 0.159
Free cross-section
[m²]
including protective grille
Nomenclature
Exhaust
air
B
[mm] Width
H
[mm] Height
A
A
[m²] Inflow cross-section B x H
A
free
[m²] Free cross-section
V [m³/h] Volume flow
v
A
[m/s] Flow velocity in inflow cross-section
(inflow velocity)
D
p
s
[Pa] Static pressure drop
L
WA
[dB(A)] A-weighted, area-corrected sound power
level
L
W-Oct
[dB] Octave sound power level
L
W-Oct
= L
WA
+
D
L
D
L
[dB] Relative sound power level to L
WA
f
[Hz] Octave mid frequency
