Title:
【発明の名称】メソ・スニファ:交互フローを使用した活性ガス・サンプリングのための装置および方法
Document Type and Number:
Japanese Patent JP2003512632
Kind Code:
A
Abstract:
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 clean air. When a mesopump is used, a single pumping channel can provide both AC and DC operation.
Inventors:
Zuk, David Jay
Cubs, Cleopatra
Cubs, Cleopatra
Application Number:
JP2001532902A
Publication Date:
April 02, 2003
Filing Date:
October 26, 2000
Export Citation:
Assignee:
Honeywell Incorporated
International Classes:
G01N1/00; F04B45/047; G01N1/24; G01N33/00; (IPC1-7): G01N1/00; F04B45/047
Domestic Patent References:
| JPH03115840A | 1991-05-16 | |||
| JPS5681451A | 1981-07-03 |
Foreign References:
| US5836750A | 1998-11-17 |
Attorney, Agent or Firm:
Kazuo Shamoto (5 outside)
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