This article shows a method where on vessels with load cells, and no other means of quantifying the material additions, load cells and a control system can be used to perform material additions. (See Figure 1, above.) The required amount setpoint is specified in addition to the required tolerance.
The material addition process starts by capturing a reference weight, the required equipment is commanded to start the required material transfer, the weight is monitored until the required cutoff amount is achieved, and the system then commands the equipment to stop transferring material. After the material transfer completes, the actual amount dosed is calculated and verified to be within the required tolerance.