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RDM-38-1120
8. Measuring and adjusting airflow
NORDcanopy canopies are fitted with measuring nozzles located inside the canopy.
ATTN! During measurement, HFU steam filters must be fitted and front panel must be closed.
In order to adjust supply airflow, the position of the adjusting plate, located in the supply chamber, is
adjusted.
Front panel
per 1m
k-factor
SPx0
-
SPx1*
19,2
SPx2*
32,3
SPx3*
50,4
AirGrip
2,4
=
1
2
3
4
1
2
3
4
1
2
1
3
2 3
4
4
L
k-factor
s=1
s=2
s=3
s=4
1000
38,9
34,4
29,1
25,7
1500
43,8
37,6
30,9
27,0
2000
77,9
68,7
58,1
51,5
2500
83,8
72,7
60,5
53,1
3000
87,7
75,2
61,9
54,0
3500
123,2
107,4
89,7
79,0
4000
155,7
137,5
116,2
102,9
4500
162,3
142,0
118,9
104,8
5000
167,6
145,4
120,9
106,2
5500
171,9
148,2
122,5
107,2
6000
175,3
150,4
123,8
108,0
Adjusting plate located behind HFU condensation plates is used for adjusting exhaust airflow.
For fixing the regulating plate, lock the butterfly nuts!
*The supply panels k-factor contain the "AirGrip" air nozzle system K-factor.
Calculation example:
Supply air canopy L=2 meter with SPx2 front panel.
Calculation of the supply air volume:
Pressure in the supply air chamber is 26 Pa
Front panel SPx2 k-factor is 32,3
Q
s
= 2 x 32,3 x √26 = 330 l/s
Q
v
=k√∆p
m
