Engineering Design Of An Eletronic Flow Transducer Based In A Venturi Differential Pressure Device.

Abstract

This paper presents a study on the development of an electronic flowmeter based in a Venturi tube as primary element. The design of the transducer is described with respect to its dimensional and constructive details, aided by computational flow simulation results. Some design characteristics of the transducer are described in the paper such as built in chambers for pressure averaging. A preliminary electronic design for the Venturi transducer is also presented in the paper, considering the use of a commercial transducer for differential pressure measurement, incorporated to the Venturi body. An experimental planning for static calibration is discussed in order to determine characteristics related to discharge coefficient change with Reynolds number and contraction ratio. Future applications of the proposed Venturi transducer will be made for flow rate measurements in actual applications both in liquid and gas phases, in order to validate the proposed design as a commercial flow measurement product.