Patent ID: 7591290

Claim:
A system for filling a cryogenic fluid storage tank from a mobile tank comprising a pressurized-fluid supply pump connectable via a filling hose to a fluid inlet of the storage tank, wherein the mobile tank comprises a pump control unit including a pressure sensor connectable to a pressure tapping of the storage tank via a secondary hose, said pressure sensor adapted to measure a pressure inside the storage tank and supply the measured pressure to a programmable controller, said programmable controller being written with programmable logic allowing the pump to operate only when the pressure measured in the storage tank lies within one of three pressure ranges, said programmable logic adapted to: i) compare the measured pressure to the three pressure ranges, each one of which has a minimum pressure and a maximum pressure, ii) establish operation of the pump within one of said pressure ranges, and iii) trigger a safety shutdown of the pump if the maximum pressure of the established range is reached within the storage tank.