Patent ID: 8829366

Claim:
A bulk material weighing unit for measuring the mass of a bulk material in motion on bulk material conveyor belt, the bulk material weighing unit comprising: a weight bearing element; a single-point load cell configured to measure only vertical force; means for fastening the single-point load cell onto the weight bearing element; a rigid weighing frame comprising a plurality of weighing roller assemblies having rollers for engaging with the conveyor belt and adapted to directly transfer the mass load of the bulk material to the single-point load cell, the rigid weighing frame being fastened onto the single-point load cell, wherein the single-point load cell is disposed at a central region of the rigid weighing frame and arranged such that the rigid weighing frame is wholly supported by the single-point load cell so that the force detected by the single-point load cell is substantially the same as the load of bulk material on the conveyor belt over the plurality of weighing roller assemblies.