Datasheet - PMCCatalogue

Data for sizing multicartridge
filters with head at top
Δp Tot.
Δpc Filter housing
Δpe Filter element
Y Multiplication factor (see below)
Q l/min = flow rate
V1 = reference viscosity 30 mm 2 /s (cSt)
V2 = operating viscosity in mm 2 /s (cSt)
Δp Tot. = Δpc + Δpe
Δpe = Y : 1000 x Q x (V2/V1)
For multicartridge filter sizing, the value of flow rate “Q l/min”
must be divided by the number of cartridges.
Calculation example with HLP Mineral Oil
Variation in viscosity
D a t a :
Filter with in-line connections
P r e s s u r e = 10 bar
Flow rate = 1400 l/min
Viscosity = 46 mm 2 /s (cSt)
Density = 0.86 kg/dm 3
Filtration = 6 µ absolute
With bypass valve
Filter type - LMP 952 number of installed cartridges 2
(see housings pressure drop graphs on pages 78 to 79)
Practical example
Calculation examples with HFD fluid
Variations in viscosity and density
D a t a :
Filter with in-line connections
P r e s s u r e = 10 bar
Flow rate = 1400 l/min
Vi s c o s i t y = 46 mm 2 /s (cSt)
Density = 1.1 kg/dm 3
F i l t r a t i o n = 6 µ absolute
With bypass valve
Filter type - LMP 952
(see housings pressure drop graphs on pages 78 to 79)
Practical example
Q
= 1400 l/min
V 2 = mm 2 /s (cSt)
Pmax = 10 bar
Filtration = 6 µ absolute
Δp Tot. max = 0.6 bar (max. recommended value)
Filter element series N, Δp max 20 bar
Δpc = 0.1 x (1.1/0.86)= 0.127 bar
Δpe = (0.4 : 1000) x (1400/2) x (46/30) = 0.43 bar
Δp Tot. = 0.127 + 0.43 = 0.557 bar
Filter type:
LMP 952 B V F3 A06 N P01
Filter housing Δp pressure drop
The curves are plotted utilising mineral oil
with density of 0.86 kg/dm 3 to ISO 3968.
Δp varies proportionally with density.
Q
= 1400 l/min
V 2 = 46 mm 2 /s (cSt)
Pmax = 10 bar
Filtration = 6 m absolute
Δp Tot. max = 0.6 bar (max. recommended value)
Filter element series N, Δp max 20 bar
Δpc = 0.1 bar (* see diagram)
Δpe = (0.4 : 1000) x (1400/2) x (46/30) = 0.43 bar
Δp Tot. = 0.1 + 0.43 = 0.53 bar
Sized filter type:
LMP 952 B A F3 A06 N P01
Multiplication factor “Y” for definition of the
p re s s u re drop of filter elements.
R e f e r ence viscosity 150 SUS
0 , 45
0 , 36
0 , 27
0 , 18
0 , 09
0 , 00
LMP 952
95 2
0 50 0 10 00 15 00 20 00 25 00 30 00
Flow rate l/min
F i l t e r
E l e m e n t
Type
CU 210 1
2
3
CU 400 2
3
4
5
6
CU 900 1
CU 950 2
3
F i l t r a t i o n
Serie N - W
Serie N
A 0 3 A 0 6 A 1 0 A 1 6 A 2 5 M 2 5 P 1 0 P 2 5
5,3
3
1,55
3,133
2,150
1,600
1,000
0,822
0,860 0,6333 0,3166 0,300 0,2142 0,050
1,030
0,443
3,92
2,3
1,33
2,550
1,700
1,285
0,833
0,580
0,8
0,4
1,9
1,21
0,69
1,457
0,940
0,709
0,475
0,300
0,5875
0,2625
1,66
0,88
0,49
1,225
0,781
0,615
0,340
0,267
0,4
0,1833
1,2
0,68
0,42
0,780
0,500
0,400
0,200
0,175
0,2571
0,152
0,098
0,065
0,049
0,192
0,102
0,084
0,057
0,053
0,050
0,020
0,48
0,42
0,23
0,750
0,400
0,340
0,240
0,220
-
-
0,41
0,35
0,17
0,640
0,340
0,270
0,190
0,177
-
-
1 1