A New Dimension to Flow Measurement

Existing mechanical flow meters are unsuitable in conditions where flood velocities exceed 5 m/s, where water is carrying debris, high sediment loads, or where there is weed growth. Pressure transducers can be used to measure velocity in two ways. Firstly, when connected to a Pitot tube, the stagnation pressure less the static head corresponds to the velocity pressure head 1/2pV2. This technique i…