Eventos Anais de eventos
COBEM 2021
26th International Congress of Mechanical Engineering
DEVELOPMENT OF AN AUTOMATED HOPPLER VISCOMETER
Submission Author:
José Victor Passos Santiago , MG
Co-Authors:
José Victor Passos Santiago, Luis Henrique Simões Leite, Gustavo Fonseca de Freitas Maia
Presenter: José Victor Passos Santiago
doi://10.26678/ABCM.COBEM2021.COB2021-0354
Abstract
The present research aims to develop an automated viscometer, from its initial conception to the calibration tests and practical use of a Höppler viscometer, as an instrument comply with the demands of the laboratory and industrial markets - which currently need faster and more efficient methods capable of reducing operational errors generated during the process of measuring viscosity, which - at this time - operates by manual and non-automated methods. Thereby, using the Höppler viscometer, found in the market and with the addition of a microcontrolled system based on Arduino, it is possible to calculate the fluid viscosity. To accomplish this, it is necessary to calculate the free fall time of a moving sphere inside a tube containing the material to be analyzed using Höppler's equation. A laser emitter-receiver system will be used, which will be positioned at the beginning and end of the path in order to mark the sphere's fall time that, when passing through the laser beam, will interrupt the communication of the laser emitter with its respective receiver, which will start or stop the timing. The time will be used to calculate the fluid viscosity, among other data previously imputed in the microcontroller's memory, which are the fluid density, the sphere density, and constants derived from the device calibrations. Then, through 180º rotation of the tube, by means of a servo motor, the movement of falling sphere is initiated again, the test is restarted. As a result, it is intended that, after the calibration of the instrument, it will be possible to compare the viscosity values measured in this test against those already available on the market, with the objective that, when automated, this viscosimeter will reach faster resulta and an accuracy close to or greater than that of a manual viscosimeter from a company that is already renowned on the market. Therefore, this work is pertinent due the fact that introduces into the market a new option that is more practical, precise and efficient, modernizing the scenario of viscometers currently in use.
Keywords
Viscometer, AUTOMATED, Arduino, Höppler
