公开(公告)号：US10393708B2

公开(公告)日：2019-08-27

申请号：US15006156

申请日：2016-01-26

Applicant: S.T.I. Security Technology Integration Ltd.

Inventor： Yuval Ovadia ,  Amos Linenberg

IPC: G01N30/30 ,  G01N30/08 ,  G01N30/02 ,  G01N1/22 ,  G01N1/40 ,  G01N30/12 ,  G01N33/00 ,  G01N30/14 ,  G01N1/02

Abstract: An apparatus for detecting a presence of at least one analyte in a gas sample. The apparatus comprises a pump for drawing a gas sample from an ambient air, a passage having first and second ends, a chamber connected to the first end and containing a concentrating element for collecting at least one analyte from the gas sample, a chromatographic separator connected to a second end of the passage, and a gas source for streaming a carrier gas via the chamber to transfer the at least one analyte toward at least one chemical detector, via the chromatographic separator, in a first direction. The pump draws the gas sample via the chamber in a second direction and the first and second directions are substantially opposing to one another.

公开(公告)号：US09612228B2

公开(公告)日：2017-04-04

申请号：US15005032

申请日：2016-01-25

Applicant: S.T.I. Security Technology Integration Ltd.

Inventor： Yuval Ovadia ,  Amos Linenberg

IPC: G01N30/30 ,  G01N30/08 ,  G01N30/02 ,  G01N1/22 ,  G01N1/40 ,  G01N30/12 ,  G01N33/00 ,  G01N30/14 ,  G01N1/02

CPC classification number: G01N30/30 ,  G01N1/2214 ,  G01N1/2273 ,  G01N1/405 ,  G01N30/02 ,  G01N30/08 ,  G01N30/12 ,  G01N30/14 ,  G01N33/0057 ,  G01N2001/022 ,  G01N2030/025 ,  G01N2030/126

Abstract: An apparatus for detecting a presence of at least one analyte in a gas sample. The apparatus comprises a pump for drawing a gas sample from an ambient air, a passage having first and second ends, a chamber connected to the first end and containing a concentrating element for collecting at least one analyte from the gas sample, a chromatographic separator connected to a second end of the passage, and a gas source for streaming a carrier gas via the chamber to transfer the at least one analyte toward at least one chemical detector, via the chromatographic separator, in a first direction. The pump draws the gas sample via the chamber in a second direction and the first and second directions are substantially opposing to one another.