Tensiometer for shallow or deep measurements including vadose zone and aquifers

Patent · Fri Jan 01 00:00:00 EST 1999

OSTI ID:872461

Faybishenko, Boris ^[1]

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1. Berkeley, CA

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.

• Research Organization: Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
• DOE Contract Number: AC03-76SF00098
• Assignee: Regents of University of California (Oakland, CA)
• Patent Number(s): US 5941121
• OSTI ID: 872461
• Country of Publication: United States
• Language: English

Related Subjects

tensiometer
shallow
deep
measurements
including
vadose
zone
aquifers
cell
described
water
level
maintained
relatively
constant
height
equilibrium
pressure
materials
surround
isolated
volume
air
changes
proportionately
changing
measured
remotely
drying
wetting
cycles
below
table
water pressure
water level
relatively constant
air pressure
vadose zone
constant height
/73/