Electrodeless conductivity sensor with inflatable surface
US5077525A · kind A · utility
21Cited by
14References
33Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 24, 1990 |
| Grant date | Dec 31, 1991 |
| Priority date | — |
| Expiry date | Jan 24, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/023
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An inductive conductivity sensor is immersed in a liquid to measure its conductivity. The sensor comprises a transducer for generating a changing magnetic field and for inductively measuring an electric current induced in the liquid by the changing magnetic field. The transducer has an external surface facing the liquid. A elastic membrane separates the external surface from the liquid. The elastic membrane is periodically inflated and deflated to deform its outer shape and thereby remove deposits formed on the membrane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.