Advanced volume gauging device

Details Advanced volume gauging device Advanced volume gauging device

2006-02-07

2006-02-07

Williams, Hezron (Department: 2856)

Measuring and testing

Liquid level or depth gauge

C073S149000

Reexamination Certificate

active

06993966

ABSTRACT:
A new high precision volume gauging system for measuring the volume of a propellant VL enclosed at a first pressure PU within a propellant tank (40) of a volume VT. The improved precision compared with prior art is achieved in that it comprises a high precision pressure sensor (90) which is comprised of a reference chamber (115) that is connected to the propellant tank (40) by a communication line (140), a valve (150) for controlling the gas flow through the line (140), and a high precision differential pressure sensor (95) that is arranged to record the pressure difference between the reference chamber (115) and the propellant tank (40) to which it is connected through a communication line (130).

REFERENCES:
patent: 3895519 (1975-07-01), Bouchy et al.
patent: 4840064 (1989-06-01), Fudim
patent: 4987775 (1991-01-01), Chobotov
patent: 5531111 (1996-07-01), Okamoto et al.
patent: 5880356 (1999-03-01), Delepierre-Massue et al.
patent: 2682185 (1993-04-01), None

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