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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.« less

Inventors:
 [1];  [2];  [1]
  1. (Idaho Falls, ID)
  2. (Albuquerque, NM)
Publication Date:
Research Org.:
Idaho National Engineering and Environmental Laboratory, Idaho Falls, ID
OSTI Identifier:
871583
Patent Number(s):
US 5758538
Assignee:
Lockheed Martin Idaho Technologies Company (Idaho Falls, ID) INEEL
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.
Hubbell, Joel M., Mattson, Earl D., & Sisson, James B.. Tensiometer and method of determining soil moisture potential in below-grade earthen soil. United States.
Hubbell, Joel M., Mattson, Earl D., and Sisson, James B.. Thu . "Tensiometer and method of determining soil moisture potential in below-grade earthen soil". United States. https://www.osti.gov/servlets/purl/871583.
@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 = {1998},
month = {1}
}

Patent:

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