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Intrinsically Safe Cellular Tank Monitor For Liquified Gas and Cryogenic Liquids

  • US 20090243863A1
  • Filed: 03/31/2008
  • Published: 10/01/2009
  • Est. Priority Date: 03/31/2008
  • Status: Abandoned Application
First Claim
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1. A fuel level reporting system for use with a consumer liquid propane (LP) fuel tank having a remote ready fuel level gauge disposed thereon, the fuel level gauge having a magnet mechanically coupled to an internal float mechanism, the magnet being oriented by the internal float mechanism as a function of the level of LP contained therein, the LP fuel tank having defined therearound a Zone 0 hazardous environment, comprising:

  • an intrinsically safe cellular monitor configured to be magnetically attached to the LP fuel tank within the Zone 0 hazardous environment;

    a Hall effect module operatively coupled to the cellular monitor and adapted to be attached to the fuel level gauge to determine a position of the magnet, the Hall effect module providing a ratiometric voltage output proportional to the level of fuel in the LP fuel tank;

    wherein the cellular monitor is programmed to report fuel level information directly to a data center via a cellular network based on a reporting schedule, and wherein the cellular monitor is further programmed to report fuel level information directly to the data center via the cellular network immediately when the cellular monitor determines a predetermined condition has occurred regardless of the reporting schedule.

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