Electromagnetic flowmeter evaluation in real facilities: Velocity profiles and error analysis

Autor(es)

Sotero Salustiano Martim, Andre Luis ^[1] ; Dalfre Filho, Jose Gilberto ^[1] ; Lemos De Lucca, Yvone de Faria ^{[2, 3]} ; Borri Genovez, Ana Ines ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Campinas, Sch Civil Engn Architecture & Urban Design, Dept Water Resources, Unicamp, Campinas, SP - Brazil

^[2] CTH, Technol Ctr Hydraul, Hydromech Res, Mech Engn, Sao Paulo, SP - Brazil

^[3] DAEE, Dept Water & Elect Energy, Sao Paulo, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: FLOW MEASUREMENT AND INSTRUMENTATION; v. 66, p. 44-49, APR 2019.
• Citações Web of Science: 0

Resumo

The reliability and accuracy of a flowmeter depends on its installation conditions, as an improper installation may distort the end results. The objective of this work was to determine the errors obtained in an electromagnetic flowmeter of 100 mm diameter, installed in common real conditions, that is, not obeying the straight pipelines length recommended in flowmeter standards. To achieve this objective of the work, the electromagnetic flowmeter was installed in four different conditions: installed downstream of a 90 degrees curve and down-stream of two curves of 90 degrees, both of short radius; downstream of a gate valve, openings of 100% and 50%. During the research, flow velocity profiles were obtained, with the purpose of evaluating the influence of profile distortion on the performance of the meter. The tests were carried out in the Laboratory of Hydraulics and Fluid Mechanics of FEC-Unicamp, Brazil, and the results are consubstantiated in comparative graphs, which demonstrate the influence of the velocity profile on the flowmeter response and accuracy for each setup bench. (AU)

• Processo FAPESP: 17/09921-2 - Determinação da correlação entre turbidez e concentração de sedimentos em suspensão e elaboração de um modelo de avaliação do transporte de sedimentos para o Rio Jundiaí - Bacia do PCJ
• Beneficiário: ANDRÉ LUÍS SOTERO SALUSTIANO MARTIM
• Modalidade de apoio: Auxílio à Pesquisa - Regular