Pressure-Flow Curves - Levitronix BFS-i06 User Manual

2.5 Pressure-Flow Curves

0 50
1000
Atmospheric Pressure: 950 hPa, Air Temperature: 24 C
13000 rpm
900
800
12000 rpm
700
600
10000 rpm
500
400
24 V Supply Voltage,
8000 rpm
Released Performance
300
6000 rpm
200
4000 rpm
100
2000 rpm
0
0 1
0 50
0
-100
-200
-300
-400
-500
-600
-700
-13000 rpm
-800
-900
-1000
0 1
Figure 7: Pressure-flow curves of bearingless fan BFS-i06.1
•
Pressure Drop Coefficient at 0 rpm: C = 0.097
•
48 V / 24 V Supply Voltage: The maximum rotational speed is limited to 13000 rpm for 48 V supply
voltage and 8000 rpm for 24 V supply voltage.
•
Negative Rotation Direction: Negative rotational speeds can be enabled in the EEPROM editor of
®
the Levitronix Service Software. This feature can be used to block an existing flow, as replacement
for actively controlled valves. If negative flow needs to be avoided for safety reasons, it is
recommended to install passive check valves or a safety shutdown mechanism to deactivate the
bearingless fan in case of negative flow.
•
Serial or Parallel Operation of Multiple Fans: Multiple fans can be used to achieve higher pressure
or flow levels.
a. Serial: Pressure is multiplied by up to the number of fans, while flow remains unchanged.
b. Parallel: Flow is multiplied by up to the number of fans, while pressure remains unchanged.
PL-3502-00, Rev00, DCO# 21-249
100
48 V Supply Voltage,
Released Performance
2 3
100
0 rpm
-6000 rpm
-10000 rpm
2 3
Typical values measured for BFS-i06.1
Flow / cfm
150 200
4 5 6
3
Flow / m /min
Flow / cfm
150 200
6000 rpm
4000 rpm
Stability Limit
(Tilting)
4 5 6
Flow / m 3 /min

2
( P = C x Q , Q = Flow [l/s],
User Manual for BFS-i06
www.levitronix.com
250 300
4
3.5
3
2.5
2
1.5
Stability Limit
(Tilting)
1
0.5
0
7 8 9
250 300
0
-0.5
-1
-1.5
-2
-2.5
-3
-3.5
-4
7 8 9

P = Pressure Drop [Pa]).
8