公开(公告)号：US10458900B2

公开(公告)日：2019-10-29

申请号：US15759165

申请日：2016-09-07

Applicant: Honeywell International Inc.

Inventor： Terry Marta ,  James Allen Cox ,  Bernard Fritz ,  Antony Phillips ,  Rodney Watts

IPC: G01N21/17 ,  G01N21/3504 ,  G01N21/37 ,  G01N29/24 ,  G01N29/44

Abstract: A non-dispersive photoacoustic gas detector includes an infrared light source, a first closed chamber, a first acoustic sensor in fluid communication with the first closed chamber, a second closed chamber, and a second acoustic sensor in fluid communication with the second closed chamber. The first closed chamber comprises a plurality of windows that are substantially transparent to infrared light from the infrared light source. The second closed chamber comprises at least one window that is substantially transparent to infrared light from the infrared light source, and the first closed chamber is arranged in series with the second closed chamber between the infrared light source and the second closed chamber.

公开(公告)号：US20180299369A1

公开(公告)日：2018-10-18

申请号：US15759158

申请日：2016-09-07

Applicant: Honeywell International Inc.

Inventor： Terry Marta ,  James Allen Cox ,  Bernard Fritz ,  Antony Phillips ,  Rodney Watts

IPC: G01N21/17 ,  G01N21/37 ,  G01N21/3504

Abstract: A non-dispersive photoacoustic gas detector comprises an infrared light source, a closed chamber, a gas sample disposed within the closed chamber, and an acoustic sensor in fluid communication with the dosed chamber. The dosed chamber comprises at least one window that is substantially transparent to infrared light from the infrared light source, and the gas sample comprises a gas or a mixture of at least two gases.

公开(公告)号：US20180284012A1

公开(公告)日：2018-10-04

申请号：US15759165

申请日：2016-09-07

Applicant: Honeywell International Inc.

Inventor： Terry Marta ,  James Allen Cox ,  Bernard Fritz ,  Antony Phillips ,  Rodney Watts

IPC: G01N21/17 ,  G01N21/3504 ,  G01N29/24 ,  G01N29/44 ,  G01N21/37

Abstract: A non-dispersive photoacoustic gas detector includes an infrared light source, a first closed chamber, a first acoustic sensor in fluid communication with the first closed chamber, a second closed chamber, and a second acoustic sensor in fluid communication with the second closed chamber. The first closed chamber comprises a plurality of windows that are substantially transparent to infrared light from the infrared light source. The second closed chamber comprises at least one window that is substantially transparent to infrared light from the infrared light source, and the first closed chamber is arranged in series with the second closed chamber between the infrared light source and the second closed chamber.