Gas leak detection apparatus and methods

Details Gas leak detection apparatus and methods Gas leak detection apparatus and methods

1994-02-03

1995-07-04

Williams, Hezron E.

Measuring and testing

Gas analysis

By thermal property

73 2327, 73 3104, G01M 325, G01N 2704

Patent

active

054289858

ABSTRACT:
An improved gas leak detection apparatus is disclosed for detecting a leak in a gas containing vessel of constant volume which compensates for deviations in behavior of a contained gas from an ideal model. The apparatus incorporates a pressure transducer, an amplifying means and a feedback means and operates to effectively and accurately model the van der Waals equation of state for gasses. The apparatus is adaptable for operation with any number of different gases by simply changing the values of specific circuit elements. The output of the apparatus is proportional to the total number of moles of gas present in the containment vessel at any particular time, and will thus indicate a leak from the vessel upon a reduction in that number of moles, absent an intentional reduction of the mass of gas in the vessel.

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