Kiefer Klimatechnik GmbH
www.kieferklima.de/en
INDUSAIL SONIC active acoustic sail system
Technical modifications reserved
- E1909_08/21
PART I-18
ACOUSTIC ABSORPTION ACCORDING TO
DIN EN ISO 354
125
250
500
1000
2000
4000
0,0
0,2
0,4
0,6
0,8
1,0
1,2
1,4
Sc
hall
absorpt
ionsgra
d
α
S
Frequenz f [Hz]
125
250
500
1000
2000
4000
0,0
0,5
1,0
1,5
2,0
2,5
3,0
3,5
4,0
äq
ui
val
en
te
Absorpt
ionsf
lä
che [
m
²]
Frequenz f [Hz]
silent (s = 100 mm)
silent (s = 200 mm)
air / plus (s = 200 mm)
125
250
500
1000
2000
4000
0,0
0,5
1,0
1,5
2,0
2,5
3,0
3,5
4,0
äq
ui
val
en
te
Absorpt
ionsf
lä
che [
m
²]
Frequenz f [Hz]
silent (s = 100 mm)
silent (s = 200 mm)
air / plus (s = 200 mm)
INDUSAIL SONIC
air / plus
s = 200 mm
silent
s = 200 mm
s = 100 mm
Frequency
Absorption
Area
Absorption
Area
Absorption
Area
[Hz]
αS [-]
Equivalent
[m²]
αS [-]
Equivalent
[m²]
αS [-]
Equivalent
[m²]
100
0.05
0.13
0.11
0.30
0.12
0.33
125
0.12
0.34
0.29
0.80
0.23
0.63
160
0.12
0.32
0.33
0.91
0.29
0.79
200
0.27
0.73
0.55
1.50
0.56
1.55
250
0.35
0.97
0.66
1.81
0.60
1.65
315
0.37
1.03
0.71
1.95
0.77
2.12
400
0.52
1.44
0.81
2.24
0.79
2.17
500
0.59
1.61
0.83
2.27
0.83
2.27
630
0.68
1.87
0.88
2.41
0.91
2.49
800
0.76
2.10
0.94
2.58
0.90
2.47
1000
0.76
2.08
0.98
2.71
0.87
2.40
1250
0.87
2.40
1.01
2.77
0.92
2.52
1600
0.85
2.35
1.04
2.86
0.96
2.65
2000
0.85
2.34
1.09
3.00
1,03
2.84
2500
0.83
2.27
1.15
3.15
1.12
3.07
3150
0.80
2.20
1.18
3.23
1.09
2.99
4000
0.73
2.02
1.09
3.00
1.01
2.79
5000
0.69
1.90
1.08
2.97
1.01
2.78
Assessed sound abs. αW
0.60
0.90
0.90
“Absorption class DIN EN
ISO 11654”
C
A
A
"Fire protection class
of acoustic mat DIN EN
13501-01"
B-s1, d0
B-s2, d0
B-s2, d0
0,0
0,2
0,4
0,6
0,8
1,0
1,2
1,4
0,0
0,5
1,0
1,5
2,0
2,5
3,0
3,5
4,0
125
250
500
1000
2000
frequency f [Hz]
silent (s = 115 mm)
silent (s = 215 mm)
air / plus (s = 215 mm)
4000
equivalent
absorption area [m²]
sound absorption level α
S
frequency f [Hz]
INDUSAIL SONIC silent sails are additionally equipped with
a highly absorbent polyester insulating material on the back.
This results in particularly high sound absorption values. The
sound absorption of the “plus” and “air” sails is independent of
the distance to the ceiling, as there is no acoustically effective
material on the back of these sails.
S
The INDUSAIL LUMINOUS “plus” and “air” achieve the same
sound absorption, as the surface area of the acoustically
effective material is identical.
