Patent ID: 7712352
Filing Date: 2010-05-11
Classification: G01M

Abstract:
1. A system for detecting and quantifying changes in the mass content of liquid storage containers comprising: differential pressure sensor means configured for receiving input representative of first and second pressure parameters and for transmitting data representative of a differential between said first and second pressure parameters to a computing means; high pressure measurement means configured for measuring a first pressure parameter in a liquid medium residing within a container, and engaged with said differential pressure sensor means for facilitating the sensing of said first pressure parameter by said differential pressure sensor means; low pressure measurement means configured, when positioned substantially at the surface of said liquid medium, for measuring a second pressure parameter at said surface of said liquid medium and for facilitating the sensing of said second pressure parameter by said differential pressure sensor means; ambient temperature measurement means for measuring ambient temperature near said container and reporting data indicative of said ambient temperature to said computing means; and protective enclosure means configured for maintaining therein one or more components of said system, other than said low pressure and high pressure measuring means, substantially at a vacuum; wherein said computing means is configured for recording in a time continuum basis data from said differential pressure sensor means, said high pressure measurement means, said low pressure measurement means, said protective enclosure means, and said ambient temperature measurement means, and for deriving data indicative of changes over time of the mass of said liquid medium within said container.