发明名称 |
Method and apparatus for measuring porosity |
摘要 |
A practice for measuring porosity wherein a plurality of medium flows of different volumetric flow rates are provided to a predetermined area of a material under test in dependence upon the pressure difference thereacross and wherein certain measured pressure /differences and their corresponding flow rates are employed to determine the material porosity.
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申请公布号 |
US4198854(A) |
申请公布日期 |
1980.04.22 |
申请号 |
US19780967250 |
申请日期 |
1978.12.07 |
申请人 |
PHILIP MORRIS INC |
发明人 |
CROWTHER, GERALD H;GAUDLITZ, ROBERT T;WASHINGTON, JAMES M |
分类号 |
G01N15/08;(IPC1-7):G01M3/02 |
主分类号 |
G01N15/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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