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Title: Vadose zone isobaric well

Abstract

A deep tensiometer is configured with an outer guide tube having a vented interval along a perforate section at its lower end, which is isolated from atmospheric pressure at or above grade. A transducer having a monitoring port and a reference port is located within a coaxial inner guide tube. The reference port of the transducer is open to the vented interval of the outer guide tube, which has the same gas pressure as in the sediment surrounding the tensiometer. The reference side of the pressure transducer is thus isolated from the effects of atmospheric pressure changes and relative to pressure changes in the material surrounding the tensiometer measurement location and so it is automatically compensated for such pressure changes.

Inventors:
 [1];  [1]
  1. Idaho Falls, ID
Publication Date:
Research Org.:
Idaho National Lab. (INL), Idaho Falls, ID (United States)
OSTI Identifier:
874082
Patent Number(s):
US 6308563
Assignee:
Bechtel BWXT Idaho, LLC (Idaho Falls, ID)
DOE Contract Number:  
AC07-94ID13223
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
vadose; zone; isobaric; deep; tensiometer; configured; outer; guide; tube; vented; interval; perforate; section; isolated; atmospheric; pressure; grade; transducer; monitoring; reference; located; coaxial; inner; gas; sediment; surrounding; effects; changes; material; measurement; location; automatically; compensated; atmospheric pressure; gas pressure; pressure transducer; guide tube; vadose zone; /73/

Citation Formats

Hubbell, Joel M, and Sisson, James B. Vadose zone isobaric well. United States: N. p., 2001. Web.
Hubbell, Joel M, & Sisson, James B. Vadose zone isobaric well. United States.
Hubbell, Joel M, and Sisson, James B. 2001. "Vadose zone isobaric well". United States. https://www.osti.gov/servlets/purl/874082.
@article{osti_874082,
title = {Vadose zone isobaric well},
author = {Hubbell, Joel M and Sisson, James B},
abstractNote = {A deep tensiometer is configured with an outer guide tube having a vented interval along a perforate section at its lower end, which is isolated from atmospheric pressure at or above grade. A transducer having a monitoring port and a reference port is located within a coaxial inner guide tube. The reference port of the transducer is open to the vented interval of the outer guide tube, which has the same gas pressure as in the sediment surrounding the tensiometer. The reference side of the pressure transducer is thus isolated from the effects of atmospheric pressure changes and relative to pressure changes in the material surrounding the tensiometer measurement location and so it is automatically compensated for such pressure changes.},
doi = {},
url = {https://www.osti.gov/biblio/874082}, journal = {},
number = ,
volume = ,
place = {United States},
year = {2001},
month = {1}
}