Ventilator: BESB200-4-1FC
Desired output: 300 l/s (1,080 m3/h) and pt = 150 Pa
BESF200-4-1FC

Reading:
Read off LWA1 (extract duct) on curve.
LWA1: 68 in range III (marked with red dot on diagram)
Suction side (outdoor air/extract air)
LWA1 read off in range III |
68 |
Correction factor KW (LW1) read off on diagram |
9 |
8 |
1 |
-3 |
-6 |
-12 |
-14 |
-20 |
Sound output level suction side LW1 |
77 |
76 |
69 |
65 |
62 |
56 |
54 |
48 |
Pressure side (supply air/exhaust air)
LWA1 read off in range III |
68 |
68 |
68 |
68 |
68 |
68 |
68 |
68 |
68 |
Correction factor KW (LW2) read off on diagram |
9 |
9 |
4 |
2 |
-2 |
-9 |
-12 |
-19 |
4 |
Sound output level pressure side LW2 |
77 |
77 |
72 |
70 |
66 |
59 |
56 |
49 |
72 |
Surroundings (sound output)
LWA1 read off in range III |
68 |
|
Correction factor KW (LW3) read off on diagram |
-15 |
-22 |
-21 |
-25 |
-31 |
-32 |
-36 |
-37 |
-23 |
Sound output level surroundings (LW3) |
53 |
46 |
47 |
43 |
37 |
36 |
32 |
31 |
45 |
LWA1 read off in range III |
68 |
Correction factor KW (LW3) read off on diagram |
-37 |
Sound pressure level surroundings LpA3 |
31 |