Endress+Hauser Levelflex FMP56 Manual page 22

30
silica sand
smooth metallic walls
silo diameter 12 m
25 silo diameter 9 m
silo diameter 6 m
silo diameter 3 m
20
15
10
5
0
0 5 10
18
wheat
smooth metallic walls
16
silo diameter 12 m
silo diameter 9 m
silo diameter 6 m
14
silo diameter 3 m
12
10
8
6
4
2
0
0 5 10
22
15 20 25 30
level [m]
15 20 25 30
level [m]
Since the tensile forces are also heavily dependent on the viscosity of the product, a higher safety factor is
necessary for highly viscous products and if there is a risk of cornice buildup. In critical cases it is better to use
a 6 mm rope instead of a 4 mm one.
The same forces also act on the silo cover. On a fixed rope, the tensile forces are definitely greater, but this can
not be calculated. Observe the tensile strength of the probes.
Options for reducing the tensile forces:
• Shorten the probe.
• If the maximum tensile load is exceeded, check whether it would be possible to use a non-contact Ultrasonic
or Level-Radar device.
9
20
18
8
16
7
14
6
12
5
10
4
8
3
6
2
4
1
2
0
0
0
35
12
30
10
25
8
20
6
15
4
10
2
5
0
0
35
0
Levelflex FMP56, FMP57
polyethylene pellets
smooth metallic walls
silo diameter 12 m
silo diameter 9 m
silo diameter 6 m
silo diameter 3 m
5 10 15 20
level [m]
cement
smooth metallic walls
silo diameter 12 m
silo diameter 9 m
silo diameter 6 m
silo diameter 3 m
5 10 15 20
level [m]
6
5
4
3
2
1
0
25 30 35
20
18
16
14
12
10
8
6
4
2
0
25 30 35
A0014133-EN
Endress+Hauser