Membrane Filter Elements
Status: 06/2001/01 Operating Manual 23
Reading the graphs
The graph at the left illustrates the
system for calculating the closing force
for the filter element type KMZ 1200 PP
(Example 2).
To calculate the closing force, proceed
in the following order:
1. Draw a horizontal line from the
operating temperature to the curve
of the temperature-dependent
operating pressure.
2. In the current example, the actual
operating pressure is less than the
permissible value.
3. Now draw a vertical line from the
actual operating pressure to
intersect with the two straight lines
F
min
and F
max
.
4. Now read off the required closing
force F
min
from the horizontal line.
5. Read off the maximum permissible
closing force F
max
at the horizontal
line in a similar manner.
Note
• The accuracy with which the graphs are read may result in deviations from the
calculated values. Therefore, use the graph reading only as an initial approximation
of the closing forces.
• The determined closing force for the plate pack must be correctly transferred to the
closing device of the filter press. Ask the filter press manufacture to properly adjust
the closing forces.
Operating pressure: p
Closing force: F (kN)
Operating temperature: T
1
2
3
4
5
