发明名称 |
Dynamic dilution system |
摘要 |
<p>An apparatus for generating a low concentration calibration gas mixture containing percent, ppm, ppb or ppt amounts of a desired analyte from a high concentration gas mixture and a high purity diluent using a series of source gas containing vessels and a series of parallel gas or chemical conduits controlled by mass flow controllers in a purged enclosure with conduits to purge gas conduits of residual gases or corrosive gases.</p> |
申请公布号 |
GB2317231(B) |
申请公布日期 |
2000.01.26 |
申请号 |
GB19970019127 |
申请日期 |
1997.09.09 |
申请人 |
* AIR PRODUCTS AND CHEMICALS, INC. |
发明人 |
ROBERT GORDON * RIDGEWAY;RICHARD VINCENT * PEARCE;PETER JAMES * MAROULIS;SEKSAN * DHEANDHANOO;SUHAS NARAYAN * KETKAR |
分类号 |
G01N1/00;G01M3/20;G01N30/04;G01N33/00;(IPC1-7):G01N33/00 |
主分类号 |
G01N1/00 |
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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