发明名称 |
THE MESO SNIFFER: A DEVICE AND METHOD FOR ACTIVE GAS SAMPLING USING ALTERNATING FLOW |
摘要 |
<p>A sampling system for detecting an analyte, comprising a diaphragm pump, a buffer chamber, a sensor head and intake port. The pump includes a chamber for receiving fluids via first and second ports. A buffer chamber is located at the second port for holding a quantity of air, and a sensor head is adapted to identify the presence of a desired analyte and produce a signal in response to the quantity identified. Preferably the diaphragm pump has a volume of gas per stroke capacity slightly larger than the volume of the sensor head such that the pump chamber has a greater volume than the buffer chamber and the buffer chamber has about the same volume as the sensor head. A sensor intake port intakes a sample potentially containing the analyte for contact with the sensor head upon operation of the diaphragm pump and out of the sensor head by jet-action caused by rapid movement of the diaphragm pump. A filter may be used for filtering air drawn through the pump chamber. The diaphragm pump may be either a single chamber pump or a multiple chamber diaphragm mesopump. In the purging mode, the system can also contain a pump for filling the system with cleaned air. When a mesopump is used, a single pumping channel can provide both AC and DC operation.</p> |
申请公布号 |
WO0130497(A3) |
申请公布日期 |
2002.01.17 |
申请号 |
WO2000US29435 |
申请日期 |
2000.10.26 |
申请人 |
HONEYWELL INC. |
发明人 |
ZOOK, DAVID, J.;CABUZ, CLEOPATRA |
分类号 |
G01N1/00;F04B45/047;G01N1/24;G01N33/00;(IPC1-7):G01N33/00;F04B43/00;G01N1/26;F04B43/04 |
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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