초록 ▼

A liquid storage and measurement system particularly applicable to the volumetric measurement of siquid hydrocarbon fuel and to the dispensing of the fuel via a fuel dispensing unit, includes a liquid measurement/storage vessel of known dimensions arranged to be partially filled with liquid, e.g. fu

A liquid storage and measurement system particularly applicable to the volumetric measurement of siquid hydrocarbon fuel and to the dispensing of the fuel via a fuel dispensing unit, includes a liquid measurement/storage vessel of known dimensions arranged to be partially filled with liquid, e.g. fuel, from a bulk liquid storage tank to provide a liquid/gas interface, a supply system for supplying liquid to the measurement/storage vessel, a discharge system for discharging liquid from the measurement/storage vessel, an ultrasonic transducer for, during continuous discharge of the liquid from the measurement/storage vessel, continually sensing and monitoring the level of the interface during each of a plurality of predetermined time intervals such as to produce an electrical signal indicative of the position of the interface during each predetermined time interval, a signal generating transducer arranged to produce an electrical signal indicative of a reference interface level during each time interval, comparators for comparing the reference and interface signals to provide an indication of the change in position of the interface during successive time intervals and a computing system for relating the known dimensions of the measurement/storage vessel to the sensed interface level to provide a volumetric indication of the liquid being continuously discharged at any instant from the measurement/storage vessel.

대표청구항 ▼

A liquid storage and measurement system including a bulk liquid storage means, at least one liquid measurement vessel of known dimensions capable of receiving a relatively much smaller volume of liquid than that stored in the bulk storage means and arranged to be partially filled with liquid to prov

A liquid storage and measurement system including a bulk liquid storage means, at least one liquid measurement vessel of known dimensions capable of receiving a relatively much smaller volume of liquid than that stored in the bulk storage means and arranged to be partially filled with liquid to provide a liquid/gas interface, means for supplying liquid from the bulk storage means to the measurement vessel, means for discharging liquid from the measurement vessel, transducer means for, during discharge of the liquid from the measurement vessel, continually sensing and monitoring the level of the interface during each of a plurality of predetermined time intervals such as to produce an electrical signal indicative of the position of the interface during each predetermined time interval, signal generating means arranged to produce an electrical signal indicative of a reference interface level during each said time interval, measuring means responsive to the reference and interface signals to provide an indication of the change in position of the interface during successive time intervals and control means for applying data derived from said signals to an algorithm related to the known dimensions of the measurement vessel and the rate of change of level at any point in the measurement vessel to provide a volumetric indication of the liquid being continuously discharged at any instant from the measurement vessel.