Method and apparatus for leak detection with float excitation an

Details Method and apparatus for leak detection with float excitation an Method and apparatus for leak detection with float excitation an

1993-12-30

1995-06-06

Williams, Hezron E.

Measuring and testing

With fluid pressure

Leakage

73 1H, 73314, 32420713, G01F 2330, G01B 726, G01M 332

Patent

active

054211930

ABSTRACT:
A leak detector including a float having a number of magnets connected to the float. Electromagnetic coils are disposed along a length of the possible range of travel of the float within the leak detector. The coils, when energized, interact with the magnet making the float move-about and settle to a position representing its true equilibrium buoyancy. Optionally, the leak detector includes a self-calibration apparatus that provides a reference signal indicting the fixed position of the self-calibration apparatus, allowing the leak detector to compensate for offset errors.

REFERENCES:
patent: 4850223 (1989-07-01), Carlin et al.
patent: 5017867 (1991-05-01), Dumais et al.
patent: 5156042 (1992-10-01), Carlin et al.
patent: 5209106 (1993-05-01), Carlin
patent: 5220310 (1993-06-01), Pye
patent: 5258707 (1993-11-01), Begin et al.

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