Advanced volume gauging device
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United States of America Patent
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-
Feb 7, 2006
Grant Date -
Nov 25, 2004
app pub date -
Jun 10, 2002
filing date -
Jun 8, 2001
priority date (Note) -
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status (Latency Note)
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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).
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