Conductivity sensor
US9086357B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 5, 2007 |
| Grant date | Jul 21, 2015 |
| Priority date | — |
| Expiry date | Oct 28, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/08
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A conductivity sensor is described in which electrodes are held in a desired position within a housing of the sensor by a number of slots accurately positioned within the housing. In one embodiment the slots are integrally formed within the housing. Once the electrodes have been inserted into the slots a thermoset resin is poured into the housing and cured. A through bore is then drilled through the housing, the electrodes and the cured resin to form a flow conduit through the sensor. A dual frequency excitation technique is also described that allows a measurement to be obtained of a polarisation resistance of the electrodes. In one embodiment this measurement is stored and used to correct subsequent conductivity measurements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.