BLAUBERG BlauFast - Page 41

41
blaubergventilatoren.de
Connection of a dierential pressure switch to air ducts for pressure dierence measurement
Supply Extract ExhaustIntake
AnemometerAnemometer
Air ow regulation through ventilation grilles or disk valves in the rooms
An anemometer with an appropriate funnel should be used for measuring of the air flow through a ventilation grille.
Measurement of the air ow through a ventilation grille or disk valve
Funnel
Anemometer
Reduce or increase air flow, if necessary.
For this, change the cross section of the disk valve or install an air throttling damper into an air distribution box or a floor-mounted
connector.
0
100
200
300
400
500
600
700
800
900
1000
0 50 100 150 200 250 300 350 400 450
Identify the unit speed curve on the diagram.
Example: maximum speed.
Draw the horizontal line corresponding to
pressure difference measured by a differential
pressure switch on the diagram.
Example: 134 Pa.
From the point of intersection of the horizontal
line and the unit speed curve draw a vertical line
to the horizontal axis to determine performance.
Example: 360 m
3
/h.
Pressure [Pa]
Air flow [m
3
/h]