relation: https://khub.utp.edu.my/scholars/8925/ title: Sinusoid based calibration for holdup measurement in two-phase flow using helical capacitance sensor creator: Lim, L.G. creator: Tang, T.B. creator: Hamid, N.H. creator: Pao, W.K.S. description: A helical capacitance sensor was designed to measure the holdup of two-phase stratified flow in horizontal pipe. The structure of 360° twisted helical capacitance sensor had been designed, analyzed and optimized using finite element method. A sinusoidal function was observed as the relationship between the capacitance readings and holdup. As the nonhomogeneity in the distribution of capacitance sensitivity field cannot be completely eliminated, a helical capacitance sensor was designed in such a way that a sinusoidal relationship was generated. The numerical readings and the approximation model obtained a very close agreement, where the mean absolute difference was about ±1. Besides, the effects of geometric parameters on the capacitance values were analyzed and investigated, where it was found that the symmetry of sinusoidal function can be modeled by adjusting the pitch of helix. © 2016 IEEE. publisher: Institute of Electrical and Electronics Engineers Inc. date: 2017 type: Conference or Workshop Item type: PeerReviewed identifier: Lim, L.G. and Tang, T.B. and Hamid, N.H. and Pao, W.K.S. (2017) Sinusoid based calibration for holdup measurement in two-phase flow using helical capacitance sensor. In: UNSPECIFIED. relation: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85012024091&doi=10.1109%2fICIAS.2016.7824103&partnerID=40&md5=ed48c238178998b5ef6399268e01ff9d relation: 10.1109/ICIAS.2016.7824103 identifier: 10.1109/ICIAS.2016.7824103