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Tensiometer methods and apparatus

United States Patent

August 10, 2004
View the Complete Patent at the US Patent & Trademark Office
Idaho National Laboratory - Visit the Technology Transfer and Commercialization Office Website
A method for collecting data regarding a matric potential of a media includes providing a tensiometer having a stainless steel tensiometer casing, the stainless steel tensiometer casing comprising a tip portion which includes a wetted porous stainless steel membrane through which a matric potential of a media is sensed; driving the tensiometer into the media using an insertion tube comprising a plurality of probe casing which are selectively coupled to form the insertion tube as the tensiometer is progressively driven deeper into the media, wherein the wetted porous stainless steel membrane is in contact with the media; and sensing the matric potential the media exerts on the wetted porous stainless steel membrane by a pressure sensor in fluid hydraulic connection with the porous stainless steel membrane. A tensiometer includes a stainless steel casing.
Grover; Blair K. (Idaho Falls, ID), Hubbell; Joel M. (Idaho Falls, ID), Sisson; James B. (Idaho Falls, ID), Casper; William L. (Rigby, ID)
Bechtel BWXT Idaho, LLC (Idaho Falls, ID)
10/ 286,709
October 31, 2002
GOVERNMENT RIGHTS This invention was made with Government support under Contract DE-AC07-99ID13727 awarded by the U.S. Department of Energy. The Government has certain rights in the invention.