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Title: Tensiometer for shallow or deep measurements including vadose zone and aquifers

Patent ·
OSTI ID:678558

A two cell tensiometer is described in which water level in the lower cell is maintained at a relatively constant height, and in equilibrium with the water pressure of materials that surround the tensiometer. An isolated volume of air in the lower cell changes pressure proportionately to the changing water pressure of the materials that surround the tensiometer. The air pressure is measured remotely. The tensiometer can be used in drying as well as wetting cycles above and below the water table. 8 figs.

Research Organization:
Univ. of California (United States)
Sponsoring Organization:
USDOE, Washington, DC (United States)
DOE Contract Number:
AC03-76SF00098
Assignee:
Univ. of California, Oakland, CA (United States)
Patent Number(s):
US 5,941,121/A/
Application Number:
PAN: 8-843,000
OSTI ID:
678558
Resource Relation:
Other Information: PBD: 24 Aug 1999
Country of Publication:
United States
Language:
English