Automação de um medidor de vazão quantitativo.

Abstract

Instruments for determination of the flow can be divided among those that use measure means direct or quantitative and those that are indirect, that is, rate meters are called. The direct meters are constituted of a reservoir of known section and of a device of measurement of the height water level that can be manual or electronic. It was aimed at with the work, to automate an flow meter quantitative through the use of level sensor, built with electronic components of low cost. Mounted in an electronic circuit, those sensor ones were monitored by a program done in Delphi language using the parallel port as middle of communication between the electronic circuit and the computer. Tests accomplished with the meter they showed that the level sensor used presented high sensibility in the detection of the water level, making possible your use in flow meters. Those, for your time, can be used as primary pattern for the calibration of the indirect flow meters, as well as in research laboratory for obtaining of the flow-pressure curve emitters for irrigation.