Coriolis dosing system for filling gas cylinders

Details Coriolis dosing system for filling gas cylinders Coriolis dosing system for filling gas cylinders

2007-09-28

2009-11-24

Maust, Timothy L (Department: 3751)

Fluent material handling, with receiver or receiver coacting mea

With signal, indicator, recorder, inspection means or exhibitor

Level or pressure in receiver

C141S104000, C141S197000, C141S236000, C141S244000, C141S302000

Reexamination Certificate

active

07621302

ABSTRACT:
In a system including a gas source, a target cylinder for receiving gas, a conduit for carrying gas, and a valve for controlling the flow of gas, a method of dosing the target cylinder with gas is disclosed. The method comprises the step of calculating a mass flow rate for dosing the conduit and the target cylinder. The valve is biased to an open position to permit gas to flow through the conduit and into the target cylinder. The mass flow rate and the cumulative mass of gas flowing through the conduit are measured using a mass flow meter. The valve is biased to maintain the measured mass flow rate of gas flowing through the conduit substantially equivalent to the calculated mass flow rate. The valve is biased to a closed position once the measured cumulative mass of gas is substantially equivalent to the pre-determined mass of gas.

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International Search Report dated Mar. 24, 2009, application No. PCT/US2008/076584.

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