Apparatus and method for measuring soil gases
US7520186B2 · kind B2 · utility
8Cited by
7References
22Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 18, 2006 |
| Grant date | Apr 21, 2009 |
| Priority date | — |
| Expiry date | Jan 5, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2001/4016
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A probe for sampling a soil gas comprising a body having a cavity to which is connected an inlet and an outlet, and a gas permeable waterproof membrane wrapped around the body and sealing the cavity. The membrane allows the soil gas to flow across the membrane from the soil to the cavity. A method for measuring soil gas diffusivity comprising the step of circulating in a closed loop a carrier gas substantially at an atmospheric pressure through a diffusion gas sampling probe inserted in the soil and through a sensor used for the measurement of a concentration of at least a component of the soil gas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.