Leak detector float system and method therefor

Details Leak detector float system and method therefor Leak detector float system and method therefor

1991-07-26

1993-05-11

Williams, Hezron E.

Measuring and testing

With fluid pressure

Leakage

73319, G01M 316

Patent

active

052091066

ABSTRACT:
An improved leak detection float system for use in underground storage tank containing fuel wherein the float system utilizes an elongated hollow test probe extending downwardly into an underground storage tank and into the fuel stored therein. A microprocessor is contained in an upper compartment of the test probe along with control electronics. A rod is centrally affixed in the lower portion of the test probe and a float is disposed around the rod, but within the test probe so as to float on the surface of the fuel. The float uses tapered edges to minimize offset error due to surface tension. An excitation transducer is placed above the float on the rod which produces vibrational waves down the rod having a predetermined frequency, power, and duration. The vibrational wave breaks the surface tension existing between the float and the fuel so that the float can obtain a position within the fluid based upon the buoyancy of the float in the fluid. The breaking of the surface tension by vibrational wave minimizes any offset between the float and the fluid caused by surface tension.

REFERENCES:
patent: 3898555 (1975-08-01), Tellerman
patent: 4850223 (1989-07-01), Carlin et al.
Balluff Inc.--Product Scope--Catalogue Number 010 E--Issue 8909 MTS--Sensors Division--Temposonics.RTM.II Linear Displacement Transducer.
Balluff--Preliminary Description--Series BTL--P Transducer with Digital counter card BTA-P.

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