MRF 1
Calculating filters and filter elements
HYDAC Filter Systems GmbH
en
Page 16 / 36
BeWa MRF1 3221266e en 2009-06-08.doc
2009-06-08
R-Factor
Filtration rating
Filter material of
element
Aqueous fluids
Oils
40 µm
PP
41
-
50 µm
PES
25
2.9
50 µm
PP
34
-
70 µm
PES
25
2.6
70 µm
PP
34
-
90 µm
PES
20
2.3
90 µm
PP
34
-
Maximum differential pressure at the filter element
The maximum differential pressure
Δ
p and the permitted temperature at the filter
element can be obtained from the following table:
Filter material of element
Fluid temperature
PES
PP
-10 – 30 °C
8 bar
5 bar
-10 – 60 °C
6.5 bar
2 bar
-10 – 100 °C
5 bar
-
Contamination retention capacity (CRC) of the filter element
The determination of the values is based on experiences in daily practice and
laboratory measurements in accordance with the following limiting conditions:
Flow rate:
10 l/min (for each 10" of filter element length)
Viscosity range:
1 - 100 mm²/s
Filtration rating:
1 - 90 µm
Differential pressure:
2.5 bar
Contamination retention capacity in grams (g)
Filter element length
DekaRheo
MegaRheo
10 inch
25 - 35
40 – 50
20 inch
60 – 70
80 – 100
30 inch
90 – 115
120 – 150
40 inch
130 - 170
160 – 200
