초록 ▼

A forecourt fuel pump has a casing locating means for metering and delivering to a flexible hose liquid fuel to be dispensed, and a processing unit arranged to monitor and control the delivery of fuel and the display of information concerning that delivery. The pump is provided with at least one sen

A forecourt fuel pump has a casing locating means for metering and delivering to a flexible hose liquid fuel to be dispensed, and a processing unit arranged to monitor and control the delivery of fuel and the display of information concerning that delivery. The pump is provided with at least one sensor for an environmental parameter associated with the pump, such as the sensing of hydrocarbon liquids in the casing. Further sensors external of the pump may be provided to sense other parameters such as the presence of hydrocarbon vapor or liquids. Each sensor provides an output which is supplied to the processing unit which is arranged to monitor the output and provide an indication if the sensed value falls outside a pre-set range.

대표청구항 ▼

[ What is claimed is:] [1.]1. 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

[ What is claimed is:] [1.]1. 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.