Normalized canals
It allows the calculation of the flow by measuring the level of he canals generating the Venturi principle. Venturi measures are performed in canals with special shapes. In this type of canals, the level and flow have an exponential relation. The normalized canals are those that have a normalized shape and dimensions where the relation between the water level in a specific point and the circulating flow is known. The most common devices correspond to ultrasonic levels situated in some height over the level of the canal level, however, we have devices with hydrostatic measure that eliminate all errors due [...]