Position: This article is about load of the weighing controller's systems.
Ensure that the load is applied to each load cell in your weighing controller as specified by the manufacturer. An improperly applied load, such as a twisting load, causes the strain gauges in the cell to experience strain and send a signal change proportional to the twisting rather than the load's weight.
For accurate weighing controller, the load cells alone must support all the weight to be measured. For example, rigid conduit connections and rigidly mounted piping on a weighing vessel will support some of the load and prevent the total load from being transmitted to the load cells. To avoid this problem, use flexible connections that won't support part of the load. And if you use bumpers or check rods to keep the weighing vessel from swinging and swaying, make sure that they don't support any of the load.
Correctly align each load point assembly -- that is, each load cell and its mounting hardware -- to ensure that the mounting hardware channels the load directly through the load cell. For example, for compression-mounting load cells under a hopper, align each load point assembly directly under the hopper leg to avoid pulling or pushing between assemblies on the other legs. Each load cell should be level, and all should be on the same plane to ensure that they share the load equally of the weighing controller.
Make sure that the floor or structure under the load cells is strong enough to bear the weight of the vessel and its contents -- as well as the weight of other equipment resting on the same floor or structure -- without flexing. This will ensure that the load point assemblies remain level ±0.5 percent from zero to full load and prevent unwanted side loads on the load cells that can impair the weighing controller 's accuracy.
If your weighing vessel has long spindly legs, the legs can spread apart as material is loaded into the vessel. This introduces side loads to the load cells and can cause controller binding, which prevents the load cells from sensing the full load. You can add cross bracing to the legs to strengthen the structure and preserve the weighing accuracy of weighing controller .