Rice Lake Weigh Modules/Mount Assemblies - Manual (Page 31)

WEIGH MODULES
2-2
Single-Ended Beams
Figure 2-2
Single-End Beam Orientation
Figure 2-2 illustrates four different vessels and recommended
mounting configurations for single-end beam weigh modules. See
the subsection on Paramounts
® for special movement consider-
ations that apply to this unique single-ended beam system.
The vessels in the upper row, at right, illustrate a vertical cylindri-
cal vessel. Note that the longitudinal axis through each load cell
points towards the center of the vessel.
This principle could also be used for the vessels in the lower row,
if it were convenient to mount the cells in each corner with the
longitudinal axis pointing toward the center. However, it may be
more convenient, and is acceptable, to mount the cells as illus-
trated. As these cells are relatively immune to extraneous forces
applied along the longitudinal axis of the cell, it should point in the
direction of any prevalent side force (for example, on a roller
conveyor, the load cells should point in the direction of travel).
General Mounting Principles
• The mounting surface should be flat and level.
• The mounting block should be thick enough to provide
adequate threads for the mounting screws.
• The corner of the mounting surface (where the cell cantile-
vers out) must be hard to prevent peening.
• The mounting bolts should be at least grade five to prevent
stretching or the possibility of breaking.
• The load should be applied vertically through the center line
of the load hole (the load may be applied from above, as
illustrated in Figure 2-1, or may be hung from below).
• The load introduction means must provide flexibility to avoid
the transmission of extraneous forces and to tolerate the
unavoidable deflection of the load cell itself.
• The mounting bolts should be torqued to specified values.
Single-End Beam Load Cell Modules
Introduction
Single-end beam load cells offer many advantages when used in well-designed weigh modules. The modules using single-end beam load
cells have a low profile, and are generally self-checking. Load cell replacement is possible in most single-ended beam mount systems by
raising the vessel only enough to remove pressure from the cell.
Figure 2-1