Method of determining an internal volume of a filter or bag device, computer program product and a testing apparatus for performing the method
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United States of America Patent
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Nov 7, 2017
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N/A
app pub date -
Mar 11, 2015
filing date -
Apr 16, 2014
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Abstract
A method of determining an internal volume (V) of a filter or bag device includes pressurizing the device to a first pressure (p1) lower than a proof pressure by supplying a test gas, pressurizing the device to proof pressure (pp), and at the same time, measuring the mass flow (m) or the volumetric flow of test gas, determining the gas temperature (T), and determining the internal volume (V) based on the equation for ideal gases, such that: V=m×R×T/(pp−p1) where V is the internal volume, m is the mass flow, R is the gas constant, T is the gas temperature, pp is the proof pressure and p1 is the first pressure. A computer program product and a testing apparatus for performing the above-mentioned method also are provided.
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