Liquid level measuring system

Details Liquid level measuring system Liquid level measuring system

1978-12-21

1979-12-04

Woodiel, Donald O.

Measuring and testing

Liquid level or depth gauge

Immersible electrode type

361284, G01F 2326

Patent

active

041765532

ABSTRACT:
A method and apparatus for measuring the level of a liquid in a storage tank having a predetermined reference level. A liquid level sensor is located in the tank so as to monitor the upper level of liquid over a predetermined height range at a plurality of locations within the tank. The sensor is interrogated at each location to determine the corresponding sensed level and the sensed levels are compared to see if their values are close enough to indicate that the measured level approximates a plane parallel to the predetermined reference level in the tank. Only when the sensed evels are close enough in value, is one of their level values read as a measure of the level in the tank.

REFERENCES:
patent: 3279253 (1966-10-01), Blackmon, Jr. et al.
patent: 3349301 (1967-10-01), Bell
patent: 3620080 (1971-11-01), Ryder
patent: 3830090 (1974-08-01), Hersch
patent: 3862571 (1975-01-01), Vogel
patent: 3916689 (1975-11-01), Donnelly
patent: 3964037 (1976-06-01), Lamphere
patent: 4001676 (1977-01-01), Hile et al.
patent: 4059016 (1977-11-01), Kitzinger et al.

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