FluidAqua Mobil - FAM 10/15-P
FAM Set-up and Connection
HYDAC FILTER SYSTEMS GMBH
en(us)
Page 31 / 80
BEWA FAM10-15-P 3193324b en-us 2011-01-19.doc
2011-01-19
Determine the pressure loss
P
(height)
as follows:
P
(height)
[bar] = h/10.
h
stands here for the distance between the suction connection on the FAM and the
fluid surface in the tank.
The pressure differential in a hydraulic line (
P
(line)
) depends on the following:
Flow
rate
Kinematics
viscosity
Pipe
dimensions
density of fluid
The pressure loss in straight pipes (
P
(line)
) can be calculated as follows:
Δ
p ~ 6,8 * L / d
4
* Q * V * D
Δ
p = Pressure differential in [bar]
L
= pipe length [m]
d
= internal pipe diameter [mm]
Q
= Flow rate [l/min]
V
= kinematics viscosity [mm²/s]
D
= Density [kg/dm³]
Mineral oil based hydraulic fluid has a density of
~
0.9 kg/dm³.
Skydrol
®
has a density (D) of 0.9 ... 1.1 kg / dm
3
.
Additional threaded connections and pipe bends increase the pressure differential
and must be taken into account.
Keep the height difference between the pump and the oil level in the tank as low as
possible.
Avoid constrictions in the connected hoses. They compromise output and increase
the risk of cavitation.
Make sure that no tension or vibrations are carried over to the pump or filter housing
when the pipes are connected. Use hoses or expansion joints if necessary.
