Once an adjustment has been made, the checkweigher continues to monitor the weight in the same manner as before, but there will be a delay before the system can send another control signal to the filler again. This gives the filler time to adjust to the new setting and prevents the system from overcorrecting.
Implementing feedback control is straightforward. Checkweighers can be either directly integrated into the filler control, or if the factory floor already includes a networked automation system, they can be connected to that instead. In order to make the feedback control effective, the checkweigher should be as close as possible to the filler to reduce the delay between an adjustment being made and the new setting taking effect. Properly positioned, a checkweigher with feedback control capabilities ensures that overfilling is minimized resulting in cost savings. Under-filling is also avoided ensuring compliance with weights and measures guidelines.