Kistler-Morse KM L-Cell Bolt-On - Manual (Page 26)

Chapter 4. L-Cell Installation on Horizontal Beams
4-1
Chapter 4: Installation of the L-Cell on
Horizontal Beams
Figure 4-1. L-Cell Shear
Mounting Set-- One on either
side of load point, same side
of web
Load Point
Follow the instructions in this chapter only if installing L-Cells on
horizontal beams.
This chapter describes the mounting locations, installation details, and
wiring details for L-Cells and junction boxes. Follow all instructions
carefully to ensure proper system operation.
L-Cell Mounting Locations
Follow the procedures below to determine L-Cell mounting locations prior to
beginning installation. This will ensure optimal system performance. Consult
KM if special considerations prevent you from installing L-Cells at the
designated locations.
L-Cell Sets
L-Cells are best mounted on beams in a shear mounting set (Fig 4-1). The
number of cells and their placement is a function of desired accuracy,
installation requirements, and maintenance considerations. See page 4-3 for a
description of the five mounting methods.
Distribution of L-Cell Sets
The distribution of L-Cell sets on beams is dependent on vessel support
configuration. Figure 4-2 shows the distribution of sets for eight support
configurations, varying from independent vessels to multiple vessels with
common columns and beams. Note in all cases with common beams between
multiple vessels, the common lateral beams are not instrumented with
L-Cells.
Figures 4-3 through 4-7 show the location of L-Cell sets on a beam. The ideal
location is midway between the vessel support bracket and the support
column or beam. This places the shear mounting set away from joints and
load points. The minimum distance between the load point and the support
column or beam should be equal to the beam height or 18” (457mm), which-
ever is highest. If less space is available, consult KM before proceeding
further.
Note
L-Cell locations may be
adjusted up to 12”
(305mm) in any direction
to avoid obstacles. If
adjusting locations,
maintain the configura-
tion of the set (i.e., if you
move one L-Cell in the
set from its ideal
location, move the other
L-Cell as well).
This cell is to
be reverse
wired