Porous medium sensor
US8978447B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 22, 2012 |
| Grant date | Mar 17, 2015 |
| Priority date | — |
| Expiry date | Jun 26, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/26
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A porous medium sensor comprises: a sensing portion, a gas exchange tubing, a gas permeable protection sleeve, and a water impermeable distal end collar. The sensing portion is at least partially insertable in a porous medium and has a housing with a gas exchange aperture defined therein and a parameter sensor mounted in the housing for measuring a parameter of the porous medium in which the sensing portion is insertable. The gas exchange tubing is in gas communication with the gas exchange aperture of the sensor portion and has a water-repellent membrane inserted therein. The water-repellent membrane prevents water infiltration in the housing through the gas exchange aperture. The gas permeable protection sleeve covers at least a section of the gas exchange tubing. The water impermeable distal end collar covers a distal end of the gas permeable protective sleeve and the water-repellent membrane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.