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Excessive product usage detection using a level monitoring system

  • US 7,423,541 B2
  • Filed: 08/09/2005
  • Issued: 09/09/2008
  • Est. Priority Date: 08/10/2004
  • Status: Active Grant
First Claim
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1. A system for detecting excessive usage of product in a storage tank, the system comprising:

  • a monitor operatively coupled to the tank for monitoring a level of product stored therein;

    a data center in communication with the monitor;

    wherein the data center generates an alarm signal when excessive product usage, defined as a difference between a first monitored level of product and a second monitored level of product equaling or exceeding a threshold level of change, has been detected; and

    wherein the monitor is configured to monitor the product level at a first rate and to transmit product level information to the data center at a second rate, and wherein the monitor immediately transmits product level information to the data center when the monitor determines that an excessive usage of product has occurred.

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