Magnetic flowmeter electrode
US5247837A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 25, 1991 |
| Grant date | Sep 28, 1993 |
| Priority date | — |
| Expiry date | Sep 25, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F1/584
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The flow tube of a ceramic material used for a magnetic flowmeter is formed with electrodes that are positioned in the wall of the tube and form a fluid tight fitting. The electrodes have a center plug made of a ceramic material with a metallization layer between the plug and the surface of the opening in the flow tube. The inner ends of the plugs are covered with a conductive ceramic electrode layer that electrically joins the metallization on the plugs to couple the EMF generated by the flowing fluid to the exterior of the flow tube. The conductive ceramic layer is engaged by the fluid in the flowmeter to protect the metallization from erosion. The electrodes are connected to suitable circuitry on their exterior ends.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.