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    LOW CROSS-SENSITIVITY OF ELECTROCHEMICAL GAS DETECTING APPARATUSES
    1.
    发明公开
    LOW CROSS-SENSITIVITY OF ELECTROCHEMICAL GAS DETECTING APPARATUSES 审中-公开

    公开(公告)号：EP4170335A1

    公开(公告)日：2023-04-26

    申请号：EP22198972.6

    申请日：2022-09-30

    Applicant: Honeywell International Inc.

    Inventor： LIANG, Feng ,  LV, Hongling ,  GUAN, Pengjian ,  LI, Wenjuan ,  XIAO, Lei ,  ZHOU, Yan ,  HU, Yu

    IPC: G01N27/404 ,  G01N33/00

    Abstract: Methods, apparatuses and systems for providing electrochemical gas detecting apparatuses are disclosed herein. The gas detecting apparatus may comprise a sensing component comprising: a housing configured to receive a sample gaseous substance comprising a target gaseous substance and an interferent gaseous substance; a reference electrode, disposed within the housing; a counter electrode disposed within the housing; and a sensing electrode disposed within the housing that is operatively coupled to a bias voltage circuit. The sensing electrode is configured to generate a current signal between the sensing electrode and the counter electrode indicative of a concentration level of the target gaseous substance in response to a first electrochemical reaction that occurs with respect to the target gaseous substance in an instance in which the sample gaseous substance is incident on the sensing electrode, the reference electrode is configured to maintain a potential of the sensing electrode at a fixed value, and the bias voltage circuit operates to modify a direction of a second electrochemical reaction that occurs with respect to the interferent gaseous substance.

    METHODS AND SYSTEMS FOR LIMITING WATER WITHIN A PHOTOIONIZATION DETECTOR
    3.
    发明公开
    METHODS AND SYSTEMS FOR LIMITING WATER WITHIN A PHOTOIONIZATION DETECTOR 审中-公开

    公开(公告)号：EP4215910A1

    公开(公告)日：2023-07-26

    申请号：EP23160242.6

    申请日：2020-06-30

    Applicant: Honeywell International Inc.

    Inventor： HUANG, Chuang ,  ZHANG, Tengfei ,  CHEN, Bing ,  LIANG, Feng

    IPC: G01N27/66 ,  G01N33/00

    Abstract: A photoionization detector, PID, comprising: a bias electrode (110); a signal electrode (115); and a processing circuitry configured to: monitor a signal between the signal electrode (115) and the bias electrode (110), determine whether the signal is above a threshold to indicate that water is present in the PID, and, in an instance in which the signal is above the threshold, the circuitry is further configured to close a leakage switch (315) to thereby connect the signal electrode (115) to at least one of a reference voltage or a ground in order to allow current to flow through the bias electrode (110) and the signal electrode (115) so as to electrolyze one or more particles of water present in the PID.

    METHODS, APPARATUSES, AND SYSTEMS PROVIDING GAS DETECTING APPARATUSES AND SENSING COMPONENTS WITH FILTERING ELEMENTS
    4.
    发明公开
    METHODS, APPARATUSES, AND SYSTEMS PROVIDING GAS DETECTING APPARATUSES AND SENSING COMPONENTS WITH FILTERING ELEMENTS 审中-公开

    公开(公告)号：EP4145119A1

    公开(公告)日：2023-03-08

    申请号：EP22188704.5

    申请日：2022-08-04

    Applicant: Honeywell International Inc.

    Inventor： YE, Yifan ,  LIANG, Feng ,  XIAO, Lei ,  XIE, Jiafu ,  PENG, Jingmeng

    IPC: G01N27/404

    Abstract: Methods, apparatuses and systems for providing providing gas detecting apparatuses (e.g., electrochemical detectors) are disclosed herein. An example gas detecting apparatus may comprise a sensing component comprising: a first sensing electrode configured to generate a first concentration level indication associated with a first portion of a sample gaseous substance disposed within the sensing component; and a second sensing electrode operatively coupled to a filtering element that is configured to absorb at least one substance from the sample gaseous substance, wherein the second sensing electrode is configured to generate a second concentration level indication associated with a second portion of the sample gaseous substance.

    PHOTO IONIZATION DETECTOR AND METHODS OF USING THE SAME
    8.
    发明公开
    PHOTO IONIZATION DETECTOR AND METHODS OF USING THE SAME 审中-实审

    公开(公告)号：EP4431932A1

    公开(公告)日：2024-09-18

    申请号：EP24158479.6

    申请日：2024-02-19

    Applicant: Honeywell International Inc.

    Inventor： LIANG, Feng ,  YANG, Fan ,  HU, Yu ,  CHEN, Guodong ,  TIAN, Renbing ,  ZHU, Hao

    IPC: G01N27/624 ,  G01N33/00 ,  G01N1/22 ,  G01N1/44

    CPC classification number: G01N33/0047 ,  G01N33/006 ,  G01N27/624 ,  G01N33/0065 ,  G01N33/0068 ,  G01N27/66 ,  G01N2035/0045520130101

    Abstract: A method (700) for measuring a volatile organic compound (VOC) by a controller component (101) of a photo ionization detector (PID) (100; 600) is provided. The method (700) includes: measuring a relative humidity (201, 201') and a temperature of a gas that is input into the PID (100; 600); comparing the measured relative humidity (201, 201') with a predetermined humidity threshold; in an instance in which the relative humidity (201') is higher than the predetermined humidity threshold: determining a drift signal of a signal electrode (105a) of the PID (100; 600) when an ionization device (102) of the PID (100; 600) is off between different cycles; comparing the drift signal with a predetermined drift threshold; in an instance in which the drift signal is greater than the predetermined drift threshold, switching on a heating component (107) of the PID (100; 600) to reduce the relative humidity (201'); and in an instance in which the drift signal is smaller than the predetermined drift threshold, switching off the heating component (107); and measuring a concentration of the VOC of the gas.

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