The V-Notch (triangular) Weirs are typically installed in open channels such as streams to determine discharge (flow rate).
The V-Notch (triangular) Weirs are typically installed in open channels such as streams to determine discharge (flow rate). The main component is a cylindrical weight suspended from a vibrating wire force transducer. As the water level changes, the changing buoyancy force on the cylinder acts directly on a vibrating transducer.