Abstract
This article proposes that the Pitot Cole tube used for measuring water flow in the distribution does not require calibration, as it is an intrinsically self-calibrated equipment. Its function is to transform flow speed (kinetic energy) into manometric pressure, where the measurement is made by manometers or Pitometry Cases. The article also cites a third-degree polynomial equation that automatically corrects the Pitot Cole tube discharge factor rangeability from 3:1 up to 35:1. As a fundamental highlight, added to other article contributions, the credibility achieved today during a flow measurement is cited, reaching an accuracy from 3:1 or better, in the entire measurement range, of 35:1. In the water industry, the Pitot Cole tube interconnected in the Pitometry Case measure and record electronically the flow of treated and distributed water in the consumer sectors and, through specific software, it executes and issues a report comparing the Pitometric measurements against installed and fixed measurement equipment on the same network.
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