Improving batch weighing accuracy with statistical process control
In batch weighing, quickly determining when your batch weighments are out of control can help you identify the source of the problem and correct it. Statistical process control can help you do this by collecting data about batch weighments over time and displaying the data in meaningful control charts that identify out-of-control points in the weighing process. An operator can use the charts to identify problem sources and then correct the problems.
This article discusses some batch weighing basics and sources of process variation in batch weighing, then explains how statistical process control can be used to minimize process control problems in batch weighing. An example of how the method can help an operator correct a batch weighing problem is discussed, and other information covers the cost and training requirements of implementing statistical process control.