发明名称 |
METHOD OF DETERMINING AN INTERNAL VOLUME OF A FILTER OR BAG DEVICE, COMPUTER PROGRAM PRODUCT AND A TESTING APPARATUS FOR PERFORMING THE METHOD |
摘要 |
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. |
申请公布号 |
US2015300863(A1) |
申请公布日期 |
2015.10.22 |
申请号 |
US201514644331 |
申请日期 |
2015.03.11 |
申请人 |
Sartorius Stedim Biotech GmbH |
发明人 |
Stering Magnus Andreas |
分类号 |
G01F17/00;G01N7/00 |
主分类号 |
G01F17/00 |
代理机构 |
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代理人 |
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主权项 |
1. A method of determining an internal volume (V) of a filter or bag device (10) comprising:
pressurizing the device to a first pressure (p1) lower than a proof pressure by supplying a test gas, pressurizing the device to the proof pressure (pp), and at the same time, measuring the mass flow (m) 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) wherein 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. |
地址 |
Goettingen DE |