Composite electrode structure

Details Composite electrode structure Composite electrode structure

G - Physics

01

F

26/112, 324/49

G01F 1/58 (2006.01) G01P 5/08 (2006.01)

Patent

CA 1220819

Abstract Composite electrode structure A nonporous composite electrode, particularly suit- able for use in electromagnetic flowmeters, includes a non-metallic, electrically conductive element con- sisting of a fused mass of polymeric material, such as perfluoroalkoxy (pfa) fluoropolymer, and carbon fibers. The electrode is fabricated by stacking alternating layers of polymeric film and carbon fiber paper, subjecting the assembly to sufficient heat and pressure to intermix the two components and bond them into a coherent mass, and fusing the resultant com- posite material onto a mounting pin. Using a poly- meric material compatible with the polymeric liner of an electromagnetic flowtube allows the Finished electrode to be fused into the liner, again by application of heat and pressure, so as to achieve a seamless interface. This configuration virtually eliminates process fluid leaks around the electrode, while the electrode structure itself exhibits excep- tional high temperature stability and corrosion re- sistance.

447765

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