04418571 is referenced by 15 patents and cites 4 patents.

A liquid level measuring device has an outer capacitance tube, an imperforate glass tube coaxially within the outer tube defining a capacitor annulus between them, and an inner capacitor sleeve coaxially within the glass tube and having separate longitudinally extending sleeve sections. The separate sleeve sections cooperate with the outer capacitance tube to form a plurality of capacitor sections each having a separately measurable value which varies between dry minimum and submerged maximum.

Title
Liquid level measuring system
Application Number
181083
Publication Number
4418571
Application Date
December 18, 1981
Publication Date
December 6, 1983
Inventor
Donald W Fleischer
Wethersfield
CT, US
Robert P Hart
Glastonbury
CT, US
Einar Asmundsson
Middle Haddam
CT, US
Agent
Prutzman Kalb Chilton & Alix
Assignee
Veeder
CT, US
IPC
G01F 23/26
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