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|Type:||Artigo de periódico|
|Title:||A high frequency electronic transducer for multiphase flow measurements|
|Author:||Belo, Francisco Antônio|
Moura, Luiz Felipe Mendes de
|Abstract:||This paper describes an electronic transducer for multiphase flow measurement. Its high sensitivity, good signal to noise ratio and accuracy are achieved through an electrical impedance sensor with a special guard technique. The transducer consists of a wide bandwidth and high slew rate differentiator where the lead inductance and stray capacitance effects are compensated. The sensor edge effect is eliminated by using a guard electrode based on the virtual ground potential of the operational amplifier. A theoretical modeling and a calibration method are also presented. The results obtained seem to confirm the validity of the proposed technique.|
|Editor:||The Brazilian Society of Mechanical Sciences|
|Appears in Collections:||Artigos e Materiais de Revistas Científicas - Unicamp|
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