发明名称 |
Gas pressure comparison pycnometer. |
摘要 |
<p>A gas comparison pycnometer is disclosed which provides a method and apparatus for determining and checking the accuracy of the volume of a solid substice. The pycnometer is also outfitted with a unique cap assembly (15) which fixes the volume in the pycnometer's sample chamber (20) from run to run, and a flow limiting system (33, 35) to prevent entrainment of fine sample particles in the gas stream without prolonging the analysis. The pycnometer also employs a series of purges with a suitable gas to carry unwanted moisture and vapors out of the system. This pycnometer solves many problems in the prior art by quickly and accurately determining the volume of a solid substance.</p> |
申请公布号 |
EP0434207(A2) |
申请公布日期 |
1991.06.26 |
申请号 |
EP19900312449 |
申请日期 |
1990.11.15 |
申请人 |
MICROMERITICS INSTRUMENT CORPORATION |
发明人 |
ORR, CLYDE, JR., DR.;CAMP, RONNIE W.;GIBSON, KATHRYN HILL;HENDRIX, WARREN P. |
分类号 |
G01F17/00;G01N9/00;G01N9/02 |
主分类号 |
G01F17/00 |
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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