Levelflex FMP56, FMP57
Endress+Hauser 21
Ordering information: Feature 600 "Probe Design", Option MB "Sensor remote, 3m/9ft cable" (® ä 47).
Dimensions (® ä 34).
Additional mounting hints Bending strength of rod probes
Sensor Feature 060 Probe Bending strength [Nm]
FMP57 AE, AF Rod 16mm (0.63") 316L 30
Tensile load limit of rope probes
Sensor Feature 060 Probe Tensile load limit [kN] Max. rupture load [kN]
1)
FMP56 LA, LB Rope 4mm (1/6") 316 12 16
NB, NE Rope 6mm (1/4") PA>Steel 12 16
FMP57 LA, LB Rope 4mm (1/6") 316 12 16
LC, LD Rope 6mm (1/4") 316 30 35
NB, NE Rope 6mm (1/4") PA>Steel 12 16
NC, NF Rope 8mm (1/3") PA>Steel 30 35
1) The ceiling of the silo must be designed to withstand this load.
Tensile load
Bulk solids exert tensile forces on rope probes whose height increases with:
• the length of the probe, i.e. max. cover
• the bulk density of the product,
• the silo diameter and
• the diameter of the probe rope
The following diagrams show typical loads for frequently occurring bulk solids as reference values. The
calculation is performed for the following conditions:
• Suspended probe (probe end not fixed at the bottom)
• Free-flowing bulk solid, i.e. mass flow. A calculation for core flow is not possible. In the event of collapsing
cornices, considerably higher loads can occur.
• The specification for tensile forces contains the safety factor 2, which compensates for the normal fluctuation
range in pourable bulk solids.
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