公开(公告)号：US20190265188A1

公开(公告)日：2019-08-29

申请号：US16005042

申请日：2018-06-11

Applicant: Figaro Engineering Inc.

Inventor： Yoshihiro Yamamoto

IPC: G01N27/404 ,  G01N27/407 ,  G01N27/416 ,  G01N27/12 ,  G01N27/30

Abstract: The output of the electrochemical gas sensor is amplified, and the ambient temperature is measured by means of a temperature sensor. When the ambient temperature is above or equal to a predetermined temperature, a standard value is generated and stored and is increased when the output of the amplification circuit is larger than the standard value, and a gas is detected according to the difference between the output of said amplification circuit and the standard value.

公开(公告)号：US10976280B2

公开(公告)日：2021-04-13

申请号：US16308523

申请日：2017-05-11

Applicant: Figaro Engineering Inc.

Inventor： Yoshihiro Yamamoto ,  Kuniyuki Izawa

IPC: G01N27/404 ,  G01N27/407 ,  G01N27/416 ,  G01N27/417

Abstract: An electrochemical gas sensor has a planar ceramic housing having a recess, a MEA, first and second electrically conductive gas diffusion membranes, and a metal lid fixed on the housing so as to cover the recess. The MEA is provided with an ionic conductive membrane, a first electrode on a surface of the membrane, and a second electrode on the opposite surface of the membrane. The first electrically conductive gas diffusion membrane is electrically connected to the first electrical connection. The second electrically conductive gas diffusion membrane is electrically connected to the second electrical connection. The lid presses the second electrically conductive gas diffusion membrane toward the MEA, and in the lid or in the bottom of the housing, a gas inlet is provided. The electrochemical gas sensor is easily made compact, small in the variations in the performances, and easily installed on a print circuit board.

公开(公告)号：US10712305B2

公开(公告)日：2020-07-14

申请号：US16005042

申请日：2018-06-11

Applicant: Figaro Engineering Inc.

Inventor： Yoshihiro Yamamoto

IPC: G01N27/404 ,  G01N27/407 ,  G01N27/30 ,  G01N27/12 ,  G01N27/416

Abstract: The output of the electrochemical gas sensor is amplified, and the ambient temperature is measured by means of a temperature sensor. When the ambient temperature is above or equal to a predetermined temperature, a standard value is generated and stored and is increased when the output of the amplification circuit is larger than the standard value, and a gas is detected according to the difference between the output of said amplification circuit and the standard value.

公开(公告)号：US20190339226A1

公开(公告)日：2019-11-07

申请号：US16308523

申请日：2017-05-11

Applicant: Figaro Engineering Inc.

Inventor： Yoshihiro Yamamoto ,  Kuniyuki Izawa

IPC: G01N27/407 ,  G01N27/416 ,  G01N27/417 ,  G01N27/404

Abstract: An electrochemical gas sensor has a planar ceramic housing having a recess, a MEA, first and second electrically conductive gas diffusion membranes, and a metal lid fixed on the housing so as to cover the recess. The MEA is provided with an ionic conductive membrane, a first electrode on a surface of the membrane, and a second electrode on the opposite surface of the membrane. The first electrically conductive gas diffusion membrane is electrically connected to the first electrical connection. The second electrically conductive gas diffusion membrane is electrically connected to the second electrical connection. The lid presses the second electrically conductive gas diffusion membrane toward the MEA, and in the lid or in the bottom of the housing, a gas inlet is provided. The electrochemical gas sensor is easily made compact, small in the variations in the performances, and easily installed on a print circuit board.

公开(公告)号：US08815065B2

公开(公告)日：2014-08-26

申请号：US13763747

申请日：2013-02-11

Applicant: Figaro Engineering Inc.

Inventor： Yoshihiro Yamamoto ,  Masafumi Okada ,  Kuniyuki Izawa ,  Tomoyasu Honda

IPC: G01N27/407

CPC classification number: G01N27/4073 ,  G01N27/4072 ,  G01N27/4074

Abstract: A sensor body of an electrochemical gas sensor having no water reservoir is housed in a metal can including a sensing electrode on one surface of a proton-conducting membrane or a separator retaining an electrolyte and a counter electrode on the opposite surface thereof. The counter electrode is supported by and electrically connected to the metal can via a connecting member. The sensing electrode is connected to a diffusion control plate with the sensing electrode-side ring member, and the ring member is conductive and includes a hole at a center thereof that is connected to a hole of the diffusion control plate.

Abstract translation: 没有储水器的电化学气体传感器的传感器体容纳在金属罐中，金属罐包括在质子传导膜的一个表面上的感测电极或在其相对表面上保持电解质和对电极的隔膜。 反电极经由连接构件支撑并与金属罐电连接。 感测电极与感测电极侧环构件连接到扩散控制板，并且环构件是导电的，并且在其中心处包括连接到扩散控制板的孔的孔。