Abstract
Initially the most suitable pressure sensor for an application was selected. The sensor model chosen was the MPX5050DP, this sensor was connected to an orifice plate. After this it was necessary to calibrate with the rotameter, we initially used a generic value for flow to see the operation of the project, after that, the correct value was used by the graph so that the programming worked correctly. The programming was done, so that by pressing the "select" button, the voltage and the flow or the voltage and the pressure variation can be visualized, so you can see both data by the same device. In the final test, the meter behaved well, and with equal values to the values of the rotameter. The project was a success and had great results, being of low cost, high precision and digital.
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