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181 条记录 (耗时 0.04 秒)

    SENSOR CLEANING AND CALIBRATION DEVICES AND SYSTEMS
    2.
    发明申请
    SENSOR CLEANING AND CALIBRATION DEVICES AND SYSTEMS 有权

    公开(公告)号：US20220308006A1

    公开(公告)日：2022-09-29

    申请号：US17616871

    申请日：2020-06-05

    申请人： Hach Company

    发明人： Gregg Allan McLeod

    IPC分类号： G01N27/38 ,  G01N27/416 ,  G01N1/20

    摘要： An electrode cleaning and calibration system generally comprises a sensor holder assembly machined from a block of solid acrylic or similar plastic material, which can accommodate a variety of types and sizes of sensors for use in monitoring and measurement of water processing and treatment processes. Examples of sensors suitable for use in the system include pH sensors, dissolved oxygen sensors, chlorine sensors, ozone sensors, total suspended solid sensors, mixed liquor suspended solid sensors, ammonia sensors, monochloramine sensors, and ultraviolent transmittance sensors.

    System and method for identifying and cleaning contamination of an electrochemical sensor
    3.
    发明授权
    System and method for identifying and cleaning contamination of an electrochemical sensor 有权

    公开(公告)号：US11150210B2

    公开(公告)日：2021-10-19

    申请号：US16329254

    申请日：2016-08-31

    申请人： HONEYWELL INTERNATIONAL INC.

    发明人： Yuzhong Yu ,  Ling Liu ,  Feng Liang

    IPC分类号： G01N27/38 ,  G01N27/30 ,  G01N27/403 ,  G01N33/00

    摘要： Methods and systems for identifying contamination of an electrochemical sensor (10) and cleaning the electrochemical sensor (10) are provided. A method may comprise scanning the sensor (10) for the first time using CV to generate a reference set of readings; scanning the sensor (10) for the second time after the sensor (10) has been employed; comparing a second set of readings from the second CV scan to the reference set of readings; when the second set of readings is different from the reference set of readings, determining that the sensor (10) potential has shifted; scanning the sensor (10) for the third time to clean one or more elements of the sensor (10); scanning the sensor (10) for the fourth time; comparing a fourth set of readings from the fourth CV scan to the second set of readings; and determining that the potential of the sensor (10) has shifted due to pollution of the sensor (10), and/or that the sensor (10) can be further cleaned.

    Techniques for extending electrode serviceability and useful life in voltametric device
    4.
    发明授权
    Techniques for extending electrode serviceability and useful life in voltametric device 有权

    公开(公告)号：US10989688B2

    公开(公告)日：2021-04-27

    申请号：US16277927

    申请日：2019-02-15

    申请人： AMS Trace Metals, Inc.

    发明人： Vladimir Dozortsev

    IPC分类号： G01N27/48 ,  G01N27/38 ,  G01N27/403 ,  G01N27/30 ,  G01N35/00 ,  G01N27/34 ,  G01N33/208 ,  G01N33/18

    摘要： This disclosure provides techniques for extending useful life of a reference electrode, as well as a novel voltametric system and measurement cell design and related chemistries. An automated, repeatable-use system features a reference electrode that directly immerses a metallic conductor into an analyte, with electrolytes (e.g., chlorides) used for measurement being separately added and removed for each measurement cycles; the metallic conductor can optionally be left exposed to clean dry air in between measurements. In one implementation, the system can be restricted to application with specific analytes (e.g., ground water) that are known in advance to be free of substances that could degrade reference electrode use or lifetime. Cleaning solutions can optionally be used that would not be practical with conventional (insulated) reference electrode designs. In another embodiment, a measurement cell can be configured to receive separated electrode modules, permitting independent cleaning/removal of the working electrode (or other electrodes).

    METHODS OF MANUFACTURING BIOSENSOR NANOWELLS
    5.
    发明申请
    METHODS OF MANUFACTURING BIOSENSOR NANOWELLS 有权

    公开(公告)号：US20210003527A1

    公开(公告)日：2021-01-07

    申请号：US16982909

    申请日：2019-03-22

    申请人： MARA NANOTECH KOREA, INC. ,  MARA NANOTECH NEW YORK, INC.

    发明人： Heayeon LEE

    IPC分类号： G01N27/327 ,  G03F7/20 ,  G01N27/38 ,  G01N33/543

    摘要： Improved methods of manufacturing highly sensitive and selective electrochemical biosensors are provided. The method may comprise washing the nanowell array electrodes of the biosensors with ferricyanide, preferably potassium ferricyanide. The method may also comprise washing the electrodes of the biosensors with methylene blue (i.e., methylthioninium chloride), either in addition to the ferricyanide and/or H2SO4 washing steps, or without the ferricyanide and/or H2SO4 washing steps.

    Analyzer for monitoring salt content in high resistivity fluids
    7.
    发明授权
    Analyzer for monitoring salt content in high resistivity fluids 有权
    用于监测高电阻率流体中盐含量的分析仪

    公开(公告)号：US09546978B2

    公开(公告)日：2017-01-17

    申请号：US14933309

    申请日：2015-11-05

    申请人： Saudi Arabian Oil Company

    发明人： Rashed Mohammad Aleisa ,  Naim Akmal ,  Taher Ali Atef Alamri

    IPC分类号： G01N27/416 ,  G01N33/22 ,  G01N27/38 ,  G01N33/28 ,  G01N27/06

    CPC分类号： G01N27/4166 ,  G01N27/06 ,  G01N27/38 ,  G01N33/22 ,  G01N33/28 ,  G01N33/2835

    摘要： An electrochemical polymerization based salt content analyzer configured to determine salt composition in a direct, fast, and serial manner. The salt content analyzer includes three electrodes: a working electrode, a counter electrode and a reference electrode. In operation, the current passing through the electrodes as a sweeping voltage is applied may be analyzed to determine the salt content of the analyte. The working electrode includes an access control mechanism to only expose a fraction of the working length of the working electrode to the outside environment at any given time. The access control mechanism is advanced between tests to expose a fresh portion of the working electrode. Thus, testing may be performed in a serial manner.

    摘要翻译： 一种基于电化学聚合的盐含量分析仪，其配置为以直接，快速和连续的方式测定盐组成。 盐含量分析仪包括三个电极：工作电极，对电极和参比电极。 在操作中，可以分析施加作为扫描电压通过电极的电流，以确定分析物的盐含量。 工作电极包括访问控制机构，用于在任何给定时间仅将工作电极的工作长度的一部分暴露于外部环境。 访问控制机构在测试之间进行，以暴露工作电极的新鲜部分。 因此，可以以串行方式执行测试。

    Amperometric Sensor System
    9.
    发明申请
    Amperometric Sensor System 审中-公开
    电流传感器系统

    公开(公告)号：US20150168342A1

    公开(公告)日：2015-06-18

    申请号：US14625546

    申请日：2015-02-18

    申请人： Michael A. Silveri

    发明人： Michael A. Silveri

    IPC分类号： G01N27/38 ,  F04D1/04

    CPC分类号： G01N27/08 ,  F04D1/04 ,  G01N27/06 ,  G01N27/4168 ,  Y10T29/49002

    摘要： A sensor system that measures at least one parameter of water includes an electronics subsystem and includes a sensor housing electrically and mechanically coupled to the electronics subsystem. The sensor housing encloses a chamber that receives water via at least one inlet and that releases water via at least one outlet. At least one sensor has at least one electrode exposed to water in the chamber. A flow generator causes water to flow through the chamber. A plurality of objects within the chamber move in response to the water flow and abrasively clean the at least one electrode. Preferably, the sensor system includes a chlorine sensor having at least two electrodes. The electronics subsystem applies a first differential voltage between the two electrodes during a measurement interval and then applies a second differential voltage between the two electrodes during an interval following the measurement interval.

    摘要翻译： 测量水的至少一个参数的传感器系统包括电子子系统，并且包括电气和机械耦合到电子子系统的传感器外壳。 传感器外壳包围通过至少一个入口接收水并经由至少一个出口释放水的室。 至少一个传感器具有暴露于腔室中的水的至少一个电极。 流量发生器使水流过腔室。 室内的多个物体响应于水流而移动并且磨蚀性地清洁至少一个电极。 优选地，传感器系统包括具有至少两个电极的氯传感器。 电子子系统在测量间隔期间在两个电极之间施加第一差分电压，然后在测量间隔之后的间隔期间在两个电极之间施加第二差分电压。