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In this paper, an experimental investigation and numerical study were performed on different electrode configurations for oil-air two phase flow measurement in different patterns. The main electrode configurations are: double ring, concave and double helix that can be compared in terms of sensitivity and phase distribution immunity. For this purpose, finite element simulations were carried out to compare electrode configurations as well as experimental study. Also a new electrode shape (TRFLC) was proposed and compared with the others. The simulation results show different sensitivity for each flow pattern: for stratified regime, TRFLC and for annular regime, concave and helical shapes were more sensitive. Concave shape was strongly dependent on the flow pattern while helical and ring show less dependency. Then, an experimental set up was constructed for oil-air two phase flow in a 26.6 ID horizontal pipe …