Fueling nozzle with integral molecular leak sensor

Details Fueling nozzle with integral molecular leak sensor Fueling nozzle with integral molecular leak sensor

2006-04-18

2006-04-18

Maust, Timothy L. (Department: 3751)

Fluent material handling, with receiver or receiver coacting mea

With signal, indicator, recorder, inspection means or exhibitor

C141S004000, C141S083000, C141S392000

Reexamination Certificate

active

07028724

ABSTRACT:
An apparatus and process for measuring the concentration of hydrogen gas being transferred through a nozzle from a source container to a destination container and for providing an alert and/or taking action where hydrogen gas leaks may create an unsafe condition. The invention can accurately and reproducibly respond to and measure the absolute hydrogen gas concentration within the nozzle housing using hydrogen gas sensors that are selective only to hydrogen, which do not require the presence of oxygen to operate and which do not saturate when hydrogen safety levels are reached. These sensors are positioned inside the nozzle housing to allow for the direct and immediate knowledge of the presence of hydrogen gas that cannot be safely determined by other means. An apparatus and process for detecting leaks of liquid hydrogen through a nozzle during transfer of liquid hydrogen from a source container to a destination container are also discussed.

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