Sound Pressure Level - Levitronix BFS-i04 User Manual

3.2 Sound Pressure Level

The sound pressure level emitted by the BFS-i04 depends strongly on the installation, operating point, and
rotational speed. It is recommended that customers measure the sound pressure level after installation of the
fan in their setup during typical operation.
Figure 12 shows the sound pressure levels measured at Levitronix
1.8 m above ground into a closed duct system. Measurements were taken based on Semi S2 guidelines, i.e.
1 m traversed from the setup at a height of 1.2 m and 1.5 m above ground.
60
55
50
45
40
35
8000 10000
Figure 12: Sound pressure level vs rotational speed and measurement height
PL-3507-00, Rev00, DCO# 23-128
12 V Supply Voltage,
Released Performance
12000
Note: Typical measured values of BFS-i04.1 installed in a closed duct system
®
. The fan was installed at a height of about
14000
Rotational Speed / rpm
User Manual for BFS-i04
www.levitronix.com
1.2 m above
ground
1.5 m above
ground
24 V Supply Voltage,
Released Performance
16000 18000
12