VEX unit: VEX340H
Desired output: 500 l/s (6500 m3/h) and pt = 250 Pa
VEX340H, LWA1 - Suction side
VEX340H, LWA2 - Pressure side
VEX340H, LWA3 - Pressure side
Reading:
Read LWA1 (extract duct) and LWA2 (pressure ducts) on curve.
LWA1: 73 in range 1 (marked with red dot on diagram)
LWA2: 85.5 in range 1 (marked with red dot on diagram)
Suction side (outdoor air/extract air)
| LWA1 |
58 |
| Correction factor KW (LW1) read off on diagram |
18 |
8 |
-11 |
1 |
-12 |
-20 |
-25 |
-32 |
| Sound output level suction side LW1 |
76 |
66 |
47 |
59 |
46 |
38 |
33 |
26 |
Pressure side (supply air/exhaust air)
| LWA1 |
77,5 |
| Correction factor KW (LW2) read off on diagram |
-1 |
-5 |
-5 |
-2 |
-5 |
-7 |
-15 |
-27 |
| Sound output level pressure side LW2 |
76,5 |
72,5 |
72,5 |
75,5 |
72,5 |
70,5 |
62,5 |
50,5 |
Surroundings (sound output)
| LWA3 |
52 |
| Correction factor KW (LW3) read off on diagram |
20 |
13 |
1 |
-6 |
-8 |
-12 |
-17 |
-21 |
| Sound output level surroundings (LW3) |
72 |
65 |
53 |
46 |
44 |
40 |
35 |
31 |
Surroundings (sound pressure)
| LWA3 read off in range I |
52 |
| Correction factor KpA (LW3) read off on diagram |
-15 |
| Sound pressure level surroundings LpA3 |
37 |
See measurement setup here.