Abstract: An improved fluid transfer accuracy, information collection, and overall management. A system may utilize a pump to transfer fluid from a source to a target vessel, a meter for measuring an amount of fluid transferred, a density meter to detect actual fluid density, and a control unit to determine actual fluid transfer amount based on density. As an example, a fluid flow meter can be coupled with a flow conduit to determine fluid volume, along with the density meter to detect real-time density of transferred fluid. During a fluid transfer event, such as aircraft refueling, LPG fueling, or other refined fuels or valuable liquids, fluid volume can be converted to fluid weight in real-time based on actual density. The real-time fluid weight can be used to determine if a target fluid weight has been reached, and fluid flow can be shut off at the appropriate time.

Abstract: One or more techniques and/or systems are disclosed for a smart pump register device used during fluid transfer operations. The register allows third party software, such as third-party applications, to be downloaded to the register. The third-party software may be downloaded from a cloud-based application store without hardware modifications. The third-party software may be used for various tasks associated with fluid transfer events. A fluid transfer system can comprise a cloud computing environment that can maintain an application database of third-party applications. A register device can comprise a regulated software portion and an unregulated software portion. The unregulated portion can run third party applications downloaded from the application database, and the regulated portion can remain isolated from the unregulated portion to maintain integrity of the regulated portion. A metering device can be used to communicate metering data to the register.

Abstract: A liquefied gas unloading and deep evacuation system may more quickly, more efficiently and more completely unload liquefied gases from transport tanks, such as rail cars, into stationary storage tanks or into truck tanks. The system may utilize a two stage compressor, an electric motor, a variable frequency drive, a four way valve, a three way valve, a two way valve, a programmable logic controller based control system and pressure and temperature transmitters. The valving enables deep evacuation of the transport or supply tank to more completely empty the transport tank. The programmable logic controller and variable speed drive may be used to variably control the speed of the two stage compressor so that the system may be running as fast as possible during changes in ambient temperature and/or different stages of offloading the liquefied gases without exceeding the compressor's horsepower limit.