PRESSURE SENSORS AND PRESSURE TRANSMITTERS
    1.
    发明申请
    PRESSURE SENSORS AND PRESSURE TRANSMITTERS 审中-公开
    压力传感器和压力变送器

    公开(公告)号:WO1996027123A1

    公开(公告)日:1996-09-06

    申请号:PCT/US1996002522

    申请日:1996-02-22

    Applicant: ROSEMOUNT INC.

    CPC classification number: G01L9/0075 G01L9/125 Y10T29/49142

    Abstract: First capacitance pressure sensor (70A, B) has a fusion bonded single crystal structure (sapphire with cavity). Second one (70A, B) has an elongated and thick single crystal structure. Third one (70A, B) uses the electric field emanating from the back sides of the capacitor plates. First differential pressure transmitter uses a process barrier (71) and an elongated member as a sensor (70A, B). Second differential pressure transmitter uses single crystal structures with stress isolation members as sensors (70A, B). Basically thick slab cavity capacitance sapphire sensors are directly exposed to a process fluid. Slab: 15x3x2 cubic mm, cavity cross section: 1mm x 0.5 micro m, capacitance: 42 pF.

    Abstract translation: 第一电容式压力传感器(70A,B)具有融合单晶结构(具有空腔的蓝宝石)。 第二个(70A,B)具有细长且厚的单晶结构。 第三个(70A,B)使用从电容器板背面发出的电场。 第一压差变送器使用过程屏障(71)和细长构件作为传感器(70A,B)。 第二差压变送器采用具有应力隔离构件的单晶结构作为传感器(70A,B)。 基本上厚的平板空腔电容蓝宝石传感器直接暴露于工艺流体。 板:15×3×2立方毫米,空腔截面:1mm×0.5微米,电容:42pF。

    INSULATED CORE ELECTRODE FOR pH SENSOR
    3.
    发明申请
    INSULATED CORE ELECTRODE FOR pH SENSOR 审中-公开
    用于pH传感器的绝缘芯电极

    公开(公告)号:WO1993008463A1

    公开(公告)日:1993-04-29

    申请号:PCT/US1992008514

    申请日:1992-10-07

    Applicant: ROSEMOUNT INC.

    CPC classification number: G01N27/333

    Abstract: A pH sensor (10) has an electrode assembly (20) with an electrode (34) with a core (38) of an electrochemically inert insulating or semi-conductive material, and is coated with an electrically conductive, electrochemically sensitive coating (40). The preferred core (38) is insulating and made of alumina, with a thin coating (40) of iridium oxide deposited over at least a portion of the outer surface of the core (38). The coating (40) is carried to a region (70) remote from the sensing surface (46) and is used for making electrically conductive connections (52, 54) that lead to remote circuitry (32). The core (38) is made in a form that can be supported and held in an insulating, electrochemically inert, deformable material (36) that is sealed around the outer surface of the coating (40) on the core (38) to prevent leakage of chemicals being sensed. An outer housing (14) also permits sealing quite easily into access ports on which the sensor housing (14) is mounted.

    THIN FILM MOISTURE SENSING ELEMENTS AND PROCESS FOR THE MANUFACTURE THEREOF
    4.
    发明申请
    THIN FILM MOISTURE SENSING ELEMENTS AND PROCESS FOR THE MANUFACTURE THEREOF 审中-公开
    薄膜湿度传感元件及其制造方法

    公开(公告)号:WO1989007264A1

    公开(公告)日:1989-08-10

    申请号:PCT/US1989000479

    申请日:1989-02-07

    Applicant: ROSEMOUNT INC.

    CPC classification number: G01N27/423

    Abstract: A solid state, thin film moisture sensing element (12) is disclosed. The sensing element (12) is fabricated by thin film deposition of at least a pair of two layer electrodes (32 and 34) on an insulating surface (27). The active surface of the element (12) is then coated with a layer of hygroscopic material (30) and placed in a diffusion limiting housing (14) to complete the sensing element assembly (10).

    Abstract translation: 公开了一种固态薄膜湿度感测元件(12)。 感测元件(12)通过至少一对两层电极(32和34)在绝缘表面(27)上的薄膜沉积来制造。 元件(12)的活性表面然后用一层吸湿材料(30)涂覆并放置在扩散限制壳体(14)中以完成感测元件组件(10)。

    THIN FILM PLATINUM RESISTANCE THERMOMETER WITH HIGH TEMPERATURE DIFFUSION BARRIER
    5.
    发明申请
    THIN FILM PLATINUM RESISTANCE THERMOMETER WITH HIGH TEMPERATURE DIFFUSION BARRIER 审中-公开
    具有高温扩散阻挡层的薄膜电阻式温度计

    公开(公告)号:WO1987005146A1

    公开(公告)日:1987-08-27

    申请号:PCT/US1987000252

    申请日:1987-02-06

    Applicant: ROSEMOUNT INC.

    CPC classification number: G01K7/183 H01C1/028 H01C7/021

    Abstract: A thin film platinum resistance thermometer capable of operation at elevated temperatures includes a benign dielectric layer (24) covering the thin film platinum resistance temperature sensing element (14) and a barrier layer (26) overlying the dielectric layer (24). The barrier layer (26), which is preferably titanium dioxide, resists diffusion or contaminants which would alter the electrical characteristics of the sensing element (14), while permitting diffusion of oxygen through the barrier layer (26).

    INSULATED CORE ELECTRODE FOR pH SENSOR
    8.
    发明公开
    INSULATED CORE ELECTRODE FOR pH SENSOR 失效
    带有绝缘核心以进行PH-探头导线。

    公开(公告)号:EP0609326A1

    公开(公告)日:1994-08-10

    申请号:EP92922017.0

    申请日:1992-10-07

    Applicant: ROSEMOUNT INC.

    CPC classification number: G01N27/333

    Abstract: L'invention se rapporte à un capteur de pH (10), qui comprend un ensemble électrode (20) comportant une électrode (34) avec un noyau (38) en matériau isolant ou semiconducteur électrochimiquement inerte, et qui est recouvert d'un enrobage électroconducteur et sensible électrochimiquement (40). Le noyau préféré (38) est isolant et produit à partir d'alumine, avec une mince couche d'enrobage (40) d'oxyde d'iridium déposé sur une partie au moins de la surface externe du noyau (38). La couche d'enrobage (40) est portée jusqu'à une région (70) éloignée de la surface de détection (46) et est utilisée pour produire des connexions électroconductrices (52, 54) qui conduisent au circuit éloigné (32). Le noyau (38) est conçu sous une forme qui peut être soutenue et maintenue dans un matériau isolant déformable et électrochimiquement inerte (36) qui est scellé autour de la surface externe de la couche d'enrobage (40) sur le noyau (38) pour empêcher toute fuite des substances chimiques devant être analysées. Un boîtier extérieur (14) est également prévu pour permettre de sceller facilement le capteur dans les trous d'accès sur lesquels est monté le boîtier (14) du capteur.

    METHOD AND APPARATUS FOR A DIRECT BONDED ISOLATED PRESSURE SENSOR
    9.
    发明授权
    METHOD AND APPARATUS FOR A DIRECT BONDED ISOLATED PRESSURE SENSOR 有权
    方法和设备直接敷隔离式压力传感器

    公开(公告)号:EP1244899B1

    公开(公告)日:2005-03-09

    申请号:EP00988200.2

    申请日:2000-12-20

    Applicant: ROSEMOUNT INC.

    CPC classification number: G01L9/0075

    Abstract: A pressure sensor (100, 222) integrally formed in the shape of a beam (102) around a central channel. The beam (102) has an integral blind end (104) that is pressurized by the fluid. The beam has an opposite end (106) that is shaped to provide a stepped corner (107) with a gap (108) opening at the base of the stepped corner (107), where the gap (108) and isolated from the fluid. A sensing film (112) in the channel adjacent the blind end (104) has an electrical parameter that varies with pressure and electrical leads (110) that extend from the channel and out the gap. A seal (115) fills the gap (108) around the leads (110) and the seal (115) fills a portion of the stepped corner (107). The sensor (100) is preferably formed by direct bonding of single crystal alumina layers (114, 116). Applications include industrial pressure transmitters, aerospace and turbine engine pressure sensing.

    THIN FILM MOISTURE SENSING ELEMENTS AND PROCESS FOR THE MANUFACTURE THEREOF
    10.
    发明授权
    THIN FILM MOISTURE SENSING ELEMENTS AND PROCESS FOR THE MANUFACTURE THEREOF 失效
    薄膜水分检测元件及其制造方法

    公开(公告)号:EP0400063B1

    公开(公告)日:1995-08-02

    申请号:EP89902875.7

    申请日:1989-02-07

    Applicant: ROSEMOUNT INC.

    CPC classification number: G01N27/423

    Abstract: A solid state, thin film moisture sensing element (12) is disclosed. The sensing element (12) is fabricated by thin film deposition of at least a pair of two layer electrodes (32 and 34) on an insulating surface (27). The active surface of the element (12) is then coated with a layer of hygroscopic material (30) and placed in a diffusion limiting housing (14) to complete the sensing element assembly (10).

    Abstract translation: 公开了一种固态薄膜湿敏元件(12)。 感测元件(12)通过在绝缘表面(27)上沉积至少一对两个层电极(32和34)来制造。 然后元件(12)的有效表面涂覆一层吸湿材料(30)并放置在扩散限制壳体(14)中以完成感测元件组件(10)。

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