发明名称 |
Method and apparatus for the detection and measurement of gases |
摘要 |
The invention provides an apparatus for the detection of a selected species in a gas sample and includes a photo-acoustic detector coupled to an infrared radiation source with an acousto-optic tunable filter disposed between the source of infrared radiation and photo-acoustic detector. This combination is capable of measuring concentrations of controlled vapors in the parts-per-million range. These measurements may be performed in a few seconds via the portable gas detection and measurement device of this invention.
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申请公布号 |
US4622845(A) |
申请公布日期 |
1986.11.18 |
申请号 |
US19850714582 |
申请日期 |
1985.03.21 |
申请人 |
WESTINGHOUSE ELECTRIC CORP. |
发明人 |
RYAN, FREDERICK M.;FELDMAN, DONALD W. |
分类号 |
G01N21/00;G01J3/12;G01N21/17;G01N29/00;(IPC1-7):G01N21/00 |
主分类号 |
G01N21/00 |
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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