Pressure-Flow Curves - Levitronix BFS-i04 User Manual

2.5 Pressure-Flow Curves

0 20
1000
Atmospheric Pressure: 950 hPa, Air Temperature: 24 C
18000 rpm
900
800
16000 rpm
700
600
14000 rpm
500
12000 rpm
400
10000 rpm
300
8000 rpm
200
6000 rpm
100
0
0.0 0.5
0 20
0
-100
-6000 rpm
-200
-300
-10000 rpm
-400
-500 -12000 rpm
-600
-18000 rpm
-700
-800
24 V Supply Voltage,
-900
Released Performance
-1000
0.0 0.5
Figure 9: Pressure-flow curves of bearingless fan BFS-i04.1
•
Pressure Drop Coefficient at 0 rpm: C = 0.506
•
24 V / 12 V Supply Voltage: The maximum rotational speed is limited to 18000 rpm for 24 V supply
voltage and 10000 rpm for 12 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-3507-00, Rev00, DCO# 23-128
40 60
24 V Supply Voltage,
Released Performance
12 V Supply Voltage,
Released Performance
1.0 1.5 2.0
40 60
0 rpm 6000 rpm
12 V Supply Voltage,
Released Performance
1.0 1.5 2.0
Note: Typical values measured for BFS-i04.1
Service Software or via Modbus command. This feature can be used to block an
Flow / cfm
80 100 120
2.5 3.0
3
Flow / m /min
Flow / cfm
80 100 120
Stability Limit
(Tilting)
2.5 3.0
3
Flow / m /min
, Q = Flow [l/s], P = Pressure Drop [Pa]).
2
(P = C x Q
User Manual for BFS-i04
www.levitronix.com
140 160
Stability Limit
(Tilting)
3.5 4.0 4.5
140 160
3.5 4.0 4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
5.0
0.0
-0.5
-1.0
-1.5
-2.0
-2.5
-3.0
-3.5
-4.0
5.0
9