Patent ID: 6283173
Filing Date: 2001-09-04
Classification: B67D

Abstract:
A forecourt fuel pump including a casing, a flexible hose for liquid fuel to be dispensed, a metering and delivery system disposed within the casing for pumping fuel to the flexible hose, and a processing unit arranged to monitor and control the delivery of fuel to the hose as well as to display information concerning the volume and cost of such delivery, wherein the pump is provided with a first sensor within said casing but external to the metering and delivery system, said first sensor being arranged to sense free hydrocarbon vapor within the casing of the fuel pump, said first sensor providing an electrical output dependent upon the concentration of the hydrocarbon vapor within the casing and sensed by said first sensor, and the processing unit is arranged to monitor the electrical output and to provide an indication if the sensed concentration of the hydrocarbon vapor exceeds a pre-set value.