发明名称 |
Multiple channel photo-ionization detector for simultaneous and selective measurement of volatile organic compounds |
摘要 |
<p>A multiple-channel photo-ionization detector (PID) determines the concentrations of specific gases or classes of gases. The PID includes a UV lamp, an optical window which divided into multiple zones with each zone producing a UV light beam having a distinctive maximum photon energy. The ionization chamber of the PID includes multiple ion detectors. The PID measures ionization currents and concentrations of gases ionizable by each UV light beam. A method of determining the concentrations and/or identifications of the individual component gases uses differences and/or ratios of measured concentrations or currents.</p> |
申请公布号 |
EP1059530(A2) |
申请公布日期 |
2000.12.13 |
申请号 |
EP20000304922 |
申请日期 |
2000.06.09 |
申请人 |
RAE SYSTEMS, INC. |
发明人 |
SUN, HONG T.;HSI, PETER C. |
分类号 |
G01N27/66;(IPC1-7):G01N27/66 |
主分类号 |
G01N27/66 |
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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