发明名称 |
Gas sample chamber |
摘要 |
A diffusion-type gas sample chamber for use in a gas analyzer consists of an elongated hollow tube having an inwardly-facing specularly-reflective surface that permits the tube to function also as a light pipe for transmitting radiation from a source to a detector through the sample gas. A number of filtering apertures in the wall of the otherwise non-porous hollow tube permit the sample gas to enter and exit freely under ambient pressure. Particles of smoke and dust of a size greater than 0.1 micron are kept out of the chamber by use of a semi-permeable membrane that spans the apertures in the hollow tube. Condensation of the sample gas components is prevented by heating the sample chamber electrically to a temperature above the dew point of the component of concern.
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申请公布号 |
US5163332(A) |
申请公布日期 |
1992.11.17 |
申请号 |
US19910793990 |
申请日期 |
1991.11.18 |
申请人 |
GAZTECH INTERNATIONAL CORPORATION |
发明人 |
WONG, JACOB Y. |
分类号 |
G01N21/35;G01J1/16;G01J1/18;G01N1/00;G01N1/22;G01N21/03;G01N21/05;G01N21/25;G01N21/31;G01N21/61;G08B17/10;G08B17/117;G08B29/20 |
主分类号 |
G01N21/35 |
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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