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Membrane Filter Elements
Status: 06/2001/01 Operating Manual 19
Calculation formulae
1
Conversion charts for SI units are reproduced in the appendix (page 50).
2
Total filtering surface of the filter element (both sides).
Conversion of the common units:
[1] Required closing force:
F
min
= 0.5 x A
F
x p x 100 x S
[2] Maximum permissible closing force:
F
max
= F
min
+ (A
G
- 0.5 x A
F
) x 0.5 x p x 100
Variable Unit
1
Description
F
min
kN Minimum or required closing force
F
max
kN Maximum permissible closing force
A
F
m² Total filtration area (see data sheets)
2
A
G
m² Total surface area of the filter element
p
F
bar Filtration pressure
p
N
bar Membrane squeezing pressure
p bar Maximum operating pressure
S - Factor S = 1.3
bar kp/cm² N/cm² kPa
bar
1 1.02 10 100
kp/cm² 0.981 1 9.81 98.1
N/cm² 0.1 0.102 1 10
kPa 0.01 0.0102 0.1 1