04625548 is referenced by 13 patents and cites 18 patents.

A hydraulic liquid pressure sensor for use in a gas operated pressure sensor system includes a sensor body with a generally circular membrane resting surface, an inlet connected to a peripheral portion of the surface and an outlet opening from a central location on the surface. A flexible membrane is positioned adjacent to the resting surface and in flush contact therewith when not in use. The flexible membrane is secured and sealed around the periphery of the circular membrane resting surface. The inlet includes an annular groove in the pressure sensor body and spaced around substantially outward of the outlet opening. The inlet also includes an additional groove in the sensor body opening to the resting surface, connected to the annular inlet groove and extending inwardly therefrom.

Title
Hydrostatic head pressure sensors for a system to determine fluid level and weight
Application Number
6/722554
Publication Number
4625548
Application Date
April 12, 1985
Publication Date
December 2, 1986
Inventor
Ian G Charter
Seabrook
TX, US
Agent
Richard M Byron
Assignee
Dresser
TX, US
IPC
G01N 9/26
G01L 7/08
G01F 23/16
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