Patent ID: 7012536
Filing Date: 2006-03-14
Classification: B60P,B67D,F17C,G01F,Y10T

Abstract:
1. A system for monitoring the conditions within a fuel storage compartment of a transport tank, said system comprising: a probe adapted to be installed in a fuel storage compartment and having a first sensor for detecting the presence of fuel at a predetermined level therein, and a second sensor for detecting the pressure of a gaseous head above the fuel, a signal generator responsive to said first and second sensors for producing a first signal representing a normal condition when the first sensor is not detecting fuel at said predetermined level, a second signal when said second sensor detects a predetermined high pressure of the gaseous head, and a third signal when said second sensor detects a predetermined low pressure of the gaseous head, and an output control responsive to said signals for delivering as output said first signal when said second and third signals are not present, and for delivering as output said second signal when said second signal is received or said third signal when said third signal is received, whereby to indicate a condition precluding delivery of fuel to or from the compartment whenever either a predetermined high or low pressure condition is present.