Porous medium electrical conductivity sensor
US8058885B2 · kind B2 · utility
10Cited by
12References
24Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 1, 2007 |
| Grant date | Nov 15, 2011 |
| Priority date | — |
| Expiry date | Nov 28, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/048
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
There is provided a sensor for measuring a quantity, such as the salinity, of the soil solution without requiring continuous calibration. The sensor is based on a porous material which automatically fills up and saturates when the soil is rewet and drains when the soil dries out from plant uptake or from air drying, then being filled up with a solution representative of the quantity to be measured in the soil during plant growth.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.