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1. FUNCTIONAL OVERVIEW
The E4000 electronic register system automates delivery and invoicing operations for deliveries
of LPG, distillate fuels and other commercially distributed liquids from owmeters on bulk delivery
trucks.
The electronic register displays the delivered volume on the owmeter at the rear of the truck as
is traditional with mechanical registers in this application. Electronic temperature compensation
allows deliveries to be made in gross or net volumes according to local practice. A printer in the
cab provides a simple volume delivery ticket or, using the E4000’s pricing capability, a complete
priced invoice as a record of the transaction. Tickets are time and date stamped for security. An
end of shift report can be conveniently generated to totalize the day’s deliveries by product. This
allows administrative staff to reconcile individual tickets with the shift as a whole. Delivery data is
held for up to 100 deliveries in battery-backed memory. (Battery life is approximately 10 years.)
The driver controls the E4000 from a push button panel on the front of the register. This allows
yes/no type decisions to be made and numerical values to be entered that are associated with
delivery functions. The buttons are used to navigate menus that appear on the display screen,
guiding the user to perform the required function. This interactive approach makes the register
easy to operate by inexperienced personnel.
The E4000 can control a security valve to prevent fraudulent LPG deliveries being made without
the register recording them. The solenoid valve is used with the LPG meter’s existing differential
valve to prevent ow. For both LPG and petroleum liquids, an optional driver-programmable
2-stage preset valve allows the delivered amount to be set at a predetermined volume or
monetary amount, subject to volume measurement resolution.
The E4000 adapts mechanically to Neptune and other manufacturers’ tank truck owmeters.
Temperature compensation is achieved via an RTD probe installed in the owmeter that directly
contacts the delivered product and measures its temperature. The ability to accept an electrical
pulse input allows the E4000 to work with today’s advanced owmeter technologies.
The E4000 is designed to interface with the latest mobile computing products. Mobile computers
bring customer database and delivery information from the ofce onto the truck. The register
updates the customer record as deliveries are made during the shift. Formatted tickets can be
printed that include customer information that has been downloaded from the computer. At the
end of the shift, captured delivery information is carried back to the ofce in the computer to be
downloaded to the main customer accounts database.
The E4000 features a calibrated pulse output which can be used to interface with remote meter
displays and/or remote control truck delivery systems.