Permeable membrane soil probe

Details Permeable membrane soil probe Permeable membrane soil probe

1995-11-22

1997-06-17

Chilcot, Richard

Measuring and testing

Gas content of a liquid or a solid

7386323, G01N 3318

Patent

active

056399561

ABSTRACT:
A permeable membrane sensor probe has a housing with a gas permeable membrane. The membrane has an outer surface and an inner surface. The membrane outer surface is disposed adjacent an outer soil engaging surface of the housing. The membrane is adapted to allow the gas phase of at least one particular chemical compound found in the soil to permeate through the membrane from the membrane outer surface to the membrane inner surface while substantially preventing the transfer of liquids and solids found in the soil through the membrane. A gas detecting arrangement is disposed adjacent the membrane inner surface and inside of the housing. This detection system detects the presence of a particular compound at different soil levels.

REFERENCES:
patent: 3673864 (1972-07-01), Cubberly, Jr.
patent: 3913384 (1975-10-01), Furuya et al.
patent: 5035149 (1991-07-01), Wierenga
patent: 5147561 (1992-09-01), Burge et al.
patent: 5330720 (1994-07-01), Sorbo et al.
Pp. 3.1 to 5.1 of "Geoprobe Systems 1993-94 Equipment and Tools Catalog" which was published prior to Nov. 22, 1994.

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