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4.2.2.
Installing the Device for Measuring Solids
False measured value
Coning and strong tensile force on the probe
The probe may not touch the lifter pipe
Strong tensile force. The rope must not be
anchored when measuring solids.
The device is mounted at a distance of half the
radius of the tank from the top of the tank with a
minimum lift nozzle height.
It prevents excessive mechanical stress when
emptying the tank.
The tensile force of the probe rope depends on the height and shape of the
tank, the fragmentation of the material, the density, and the speed of
discharge.
The following table gives the tensile load values for the different materials
(approximate data in tons).
Probe type
Material
Probe length
6 m
(20 ft)
12 m
(40 ft)
24 m
(80 ft)
Single cable, Ø8 mm (Ø0.31
″
), max. load: 3.0 T
Cement
0.6 T
1.2 T
2.4 T
Ash
0.3 T
0.6 T
1.2 T
The measured process material can accumulate on the probe and lifter, which weakens the energy of the measuring pulse.
Avoid creating cavities that increase deposition.
Observe the load capacity of the tank top, which must ensure the maximum tensile force of the probe.
