Handbook HELLA 202108

20/103 | HELLA
Technical Parameters
Legend
L
0,2
(m)Air throw length with terminal velocity 0,2 m/s
L
x
(m)Air throw length calculated for specific terminal velocity
x (m/s)Terminal velocity in range of 0,1 m/s ... 1 m/s
0%, 25%, 50%, 75%, 100% The slider adjustment damper positions in pressure drop/noise diagrams
are represented as percentage. 0% is fully closed damper. 100% is fully open damper.
Calculation of Air Throw for Different Terminal Velocities
L
x
= L
0,2
· 0,2/x
HELLA-1-500-B-R-0-AN + PB-HELLA-1-500
Pressure drop & A-weighted sound power level in dB(A)
10 20 30 40 50 60 70 m³/h
5 10 15 l/s
25
50
Pa
25 dB(A)
30 dB(A)
35 dB(A)
40 dB(A)
45 dB(A)
0 %
25 %
50 %
75 %
100 %
HELLA-1-700-B-R-0-AN + PB-HELLA-1-700
Pressure drop & A-weighted sound power level in dB(A)
25 50 75 m³/h
4 8 12 16 20 24 l/s
10
20
30
40
50
Pa
25 dB(A)
30 dB(A)
35 dB(A)
40 dB(A)
45 dB(A)
0 %
25 %
50 %
75 %
100 %
HELLA-1-500-B-R-0-AN + PB-HELLA-1-500
Throw length (terminal velocity 0.2 m/s)
10 20 30 40 50 60 70 m³/h
3
6
m
Horizontal
HELLA-1-700-B-R-0-AN + PB-HELLA-1-700
Throw length (terminal velocity 0.2 m/s)
25 50 75 m³/h
3
6
m
Horizontal