OPERATION
idler frame
scale mounting bracket
dynamic beam
static beam
test weight bar
idler bracket
Force
idler clip
Each MSI weighbridge is designed to react to the vertical component of the force being applied to it. Each MSI
consists essentially of a static assembly and a weighing assembly.
The static assembly is used to mount each MSI between the conveyor stringers and supports the weighing
assembly via its load cells.
The weighing assembly supports the scale idler and transfers the weight of the material to the load cells.
These are the active components in the weighing assembly.
As the material travels along the conveyor, a force is exerted through the suspended idler onto the weighing
assembly. The weighing assembly is forced down proportionally. The movement in each load cell is sensed
by its strain gauges. These modulate the excitiation signal from the electronic integrator to produce a signal
proportional to weight, which is returned to the integrator. The movement in the load cell is limited by the
positive stop incorporated in the design of the load cell.
weigh
bridge
PL-327
3
