Tonnage monitor
A tonnage monitor is a meter used on a
piezoelectric effect
as they are stretched during press operation.
The tonnage monitor may provide any of the following additional features:
- Warning indication when the load exceeds a setpoint
- A press stop signal to halt the press at the top of the stroke for when the load exceeds a set point. This signal is generally used to watch for sudden events such as a tool breaking or a part becoming jammed.
- Recording of successive press hits to show the operational trend
- Graphing of a single stroke. With a progressive die, such a graph can be used by the tool and diemaker to view the operation of the different cutting pieces and thereby optimize tool performance.