Composite electrode structure
US4565619A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 18, 1983 |
| Grant date | Jan 21, 1986 |
| Priority date | — |
| Expiry date | Feb 18, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F1/584
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A nonporous composite electrode, particularly suitable for use in electromagnetic flowmeters, includes a non-metallic, electrically conductive element consisting 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 composite material onto a mounting pin. Using a polymeric 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 exceptional high temperature stability and corrosion resistance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.