公开(公告)号：US20230125226A1

公开(公告)日：2023-04-27

申请号：US18146147

申请日：2022-12-23

Applicant: HONEYWELL INTERNATIONAL INC.

Inventor： Lei XIAO ,  Feng LIANG ,  Jianming JIN ,  Guoqiang NI ,  Qinghui MU ,  Sam SU

IPC: G01N27/407 ,  G01N27/406

Abstract: Apparatus and associated methods relate to a one-piece structure for a solid electrolyte chemical sensor (SECS) having a first surface defining a cavity designed to receive a substrate that retains a solid electrolyte, an internal water impermeable coating on at least a portion of the first surface, a second surface that is substantially coplanar with an adjacent peripheral edge of a top surface of the substrate when the substrate is received in the cavity, and a plurality of electrical contacts disposed on the second surface adapted to electrically couple with the electrodes on the substrate when the substrate is received in the cavity and electrical paths are provided between respective electrical contacts and electrodes. In an illustrative example, the internal water impermeable coating may include a metallic material, such as gold. In various embodiments, the one-piece structure may advantageously prevent water loss from both the sensor substrate and the SECS.

公开(公告)号：US20200292486A1

公开(公告)日：2020-09-17

申请号：US16760057

申请日：2017-11-01

Applicant: HONEYWELL INTERNATIONAL INC.

Inventor： Ling LIU ,  Lei XIAO ,  Jianming JIN ,  Yan ZHANG ,  Feng LIANG

IPC: G01N27/413

Abstract: Embodiments relate generally to systems and methods for operating an electrochemical oxygen sensor at low relative humidity (i.e., 15% RH or less). A method may comprise operating an electrochemical sensor to detect oxygen in the field, wherein the electrochemical sensor comprises one or more electrodes and an electrolyte configured to electrically connect the one or more electrodes with an initial concentration of approximately 8 M sulfuric acid; and maintaining the sensor accuracy during the operation of the sensor to detect oxygen in the field, wherein the relative humidity of the environment is approximately 15% or less, without recalibrating the sensor using a source of nitrogen.