Pressure-Flow Curves - Levitronix BFS-i10 User Manual

2.5 Pressure-Flow Curves

0 200
1300
Atmospheric Pressure: 950 hPa, Air Temperature: 24 C
1200
7400 rpm
1100
7000 rpm
1000
900
800
6000 rpm
700
600
5000 rpm
500
400
4000 rpm
300
3000 rpm
200
2000 rpm
100
1000 rpm
0
0 5
0 200
0
-100
-200
-300
-400
-500
-600
-700
-800
-6000 rpm
-900
-1000
-7400 rpm
-1100
48 V Supply Voltage,
-1200
Released Performance
-1300
0 5
Figure 7: Pressure-flow curves of bearingless fan BFS-i10.1
•
Pressure Drop Coefficient at 0 rpm: C = 0.0085
•
48 V / 24 V Supply Voltage: The maximum rotational speed is limited to 7400 rpm for 48 V supply
voltage and 4000 rpm for 24 V supply voltage.
•
Negative Rotation Direction: Negative rotational speeds can be enabled in the EEPROM editor of
the Levitronix ®
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-3505-00, Rev00, DCO# 21-249
400 600
24 V Supply Voltage,
Released Performance
10 15
400 600
1000 rpm
0 rpm
-2000 rpm
-4000 rpm
24 V Supply Voltage,
Released Performance
10 15
Typical values measured for BFS-i10.1
Service Software or via Modbus command. This feature can be used to block an
Flow / cfm
800
48 V Supply Voltage,
Released Performance
20 25
3
Flow / m /min
Flow / cfm
800
3000 rpm
2000 rpm
Stability Limit
(Tilting)
20 25
3
Flow / m /min

2
( P = C x Q , Q = Flow [l/s],
User Manual for BFS-i10
www.levitronix.com
1000 1200
Stability Limit
(Tilting)
30 35
1000 1200
4000 rpm
30 35

P = Pressure Drop [Pa]).
1400
5
4
3
2
1
0
40
1400
-0.2
-1.2
-2.2
-3.2
-4.2
-5.2
40
8