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Title: Tensiometer and method of determining soil moisture potential in below-grade earthen soil

Abstract

A tensiometer to in situ determine below-grade soil moisture, potential of earthen soil includes, a) an apparatus adapted for insertion into earthen soil below grade, the apparatus having a below-grade portion, and, comprising; b) a porous material provided in the below-grade portion, the porous material at least in part defining a below-grade first fluid chamber; c) a first fluid conduit extending outwardly of the first fluid chamber; d) a first controllable isolation valve provided within the first fluid conduit, the first controllable isolation valve defining a second fluid chamber in fluid communication with the first fluid chamber through the first fluid conduit and the isolation valve, the first controllable isolation valve being received within the below-grade portion; and e) a pressure transducer in fluid communication with the first fluid chamber, the pressure transducer being received within the below-grade portion. An alternate embodiment includes an apparatus adapted for insertion into earthen soil below grade, the apparatus having a below-grade portion, and including: i) a porous material provided in the below-grade portion, the porous material at least in part defining a below-grade first fluid chamber; and ii) a pressure sensing apparatus in fluid communication with the first fluid chamber, the pressure sensingmore » apparatus being entirely received within the below-grade portion. A method is also disclosed using the above and other apparatus.

Inventors:
 [1];  [2];  [1]
+ Show Inventor Affiliations
  1. Idaho Falls, ID
  2. Albuquerque, NM
Issue Date:
Research Org.:
Idaho National Laboratory (INL), Idaho Falls, ID (United States)
OSTI Identifier:
871583
Patent Number(s):
5758538
Assignee:
Lockheed Martin Idaho Technologies Company (Idaho Falls, ID)
Patent Classifications (CPCs):
E - FIXED CONSTRUCTIONS E02 - HYDRAULIC ENGINEERING E02D - FOUNDATIONS
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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DOE Contract Number:  
AC07-94ID13223
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
tensiometer; method; determining; soil; moisture; potential; below-grade; earthen; situ; determine; apparatus; adapted; insertion; below; grade; portion; comprising; porous; material; provided; defining; fluid; chamber; conduit; extending; outwardly; controllable; isolation; valve; communication; received; pressure; transducer; alternate; embodiment; including; ii; sensing; entirely; disclosed; moisture potential; pressure sensing; soil moisture; below grade; apparatus adapted; extending outwardly; fluid chamber; porous material; fluid communication; pressure transducer; alternate embodiment; material provided; earthen soil; sensing apparatus; isolation valve; situ determine; below-grade soil; soil below; conduit extending; fluid conduit; below-grade earthen; determining soil; determine below-grade; /73/

Citation Formats

Hubbell, Joel M, Mattson, Earl D, and Sisson, James B. Tensiometer and method of determining soil moisture potential in below-grade earthen soil. United States: N. p., 1998. Web.
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Hubbell, Joel M, Mattson, Earl D, & Sisson, James B. Tensiometer and method of determining soil moisture potential in below-grade earthen soil. United States.
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Hubbell, Joel M, Mattson, Earl D, and Sisson, James B. Tue . "Tensiometer and method of determining soil moisture potential in below-grade earthen soil". United States. https://www.osti.gov/servlets/purl/871583.
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@article{osti_871583,
title = {Tensiometer and method of determining soil moisture potential in below-grade earthen soil},
author = {Hubbell, Joel M and Mattson, Earl D and Sisson, James B},
abstractNote = {A tensiometer to in situ determine below-grade soil moisture, potential of earthen soil includes, a) an apparatus adapted for insertion into earthen soil below grade, the apparatus having a below-grade portion, and, comprising; b) a porous material provided in the below-grade portion, the porous material at least in part defining a below-grade first fluid chamber; c) a first fluid conduit extending outwardly of the first fluid chamber; d) a first controllable isolation valve provided within the first fluid conduit, the first controllable isolation valve defining a second fluid chamber in fluid communication with the first fluid chamber through the first fluid conduit and the isolation valve, the first controllable isolation valve being received within the below-grade portion; and e) a pressure transducer in fluid communication with the first fluid chamber, the pressure transducer being received within the below-grade portion. An alternate embodiment includes an apparatus adapted for insertion into earthen soil below grade, the apparatus having a below-grade portion, and including: i) a porous material provided in the below-grade portion, the porous material at least in part defining a below-grade first fluid chamber; and ii) a pressure sensing apparatus in fluid communication with the first fluid chamber, the pressure sensing apparatus being entirely received within the below-grade portion. A method is also disclosed using the above and other apparatus.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jun 02 00:00:00 EDT 1998},
month = {Tue Jun 02 00:00:00 EDT 1998}
}
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Works referenced in this record:

A Tensiometer and pore Water Sampler for Vadose zone Monitoring
journal, January 1987

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