Apparatus for measuring excess pore water pressure

Details Apparatus for measuring excess pore water pressure Apparatus for measuring excess pore water pressure

1978-06-28

1979-04-24

Woodiel, Donald O.

Measuring and testing

Fluid pressure gauge

Diaphragm

73 38, 73170A, G01L 902

Patent

active

041505786

ABSTRACT:
An elongated tubular housing has differential pressure transducers at spaced points therealong and electrically insulated therefrom by a mounting means. Each mounting means has a diaphragm exposed to pore water pressure and a diaphragm exposed to hydrostatic pressure at its location. The opposite sides of a third diaphragm are responsive to the pore water pressure and hydrostatic pressure. Conductors are provided on opposite sides of the third diaphragm to measure differential conductance which is analogous to excess pore water pressure.

REFERENCES:
patent: 3534605 (1970-10-01), Koning et al.
patent: 3935745 (1976-02-01), Jonell et al.
patent: 3990310 (1976-11-01), Greer et al.

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