PLATINUM RESISTANCE THERMOMETER, PROTECTIVE COVERING LAYER AND ITS PREPARATION

    公开(公告)号:JPH0917608A

    公开(公告)日:1997-01-17

    申请号:JP4027896

    申请日:1996-02-05

    Applicant: ROSEMOUNT INC

    Abstract: PROBLEM TO BE SOLVED: To provide a platinum resistor thermometer whose electric characteristics are not deteriorated at a high temperature, and its manufacturing method. SOLUTION: A thin film platinum resistor temperature detecting element 14 is coated with a high quality dielectric layer 24 which is covered with a partition layer 26. This partition layer 26 covers the upper part of the dielectric layer 24, and prevents contaminant from diffusion toward the detecting element 14. The partition layer 26 allows diffusion of oxygen, so that the platinum layer is surrounded by an abundant oxygen atmosphere. The high quality dielectric layer 24 is, e.g. a silicon dioxide layer, and the partition layer 26 is composed of titanium dioxide. By this constitution, the temperature detecting element 14 is not contaminated and the temperature coefficient of the resistor is not deteriorated at a high temperature.

    2.
    发明专利
    未知

    公开(公告)号:AT67592T

    公开(公告)日:1991-10-15

    申请号:AT87901835

    申请日:1987-02-06

    Applicant: ROSEMOUNT INC

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

    3.
    发明专利
    未知

    公开(公告)号:DE602005018749D1

    公开(公告)日:2010-02-25

    申请号:DE602005018749

    申请日:2005-03-02

    Applicant: ROSEMOUNT INC

    Abstract: A wireless field device is disclosed. The field device includes a wireless communications module and an energy conversion module. The wireless communications module is configured to wirelessly communicate process-related information with another device. The energy conversion module is coupled to the wireless communications module. The energy conversion module is configured to couple to a thermal source, and to generate electricity from thermal potential energy in the thermal source.

    4.
    发明专利
    未知

    公开(公告)号:DE3773213D1

    公开(公告)日:1991-10-24

    申请号:DE3773213

    申请日:1987-02-06

    Applicant: ROSEMOUNT INC

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

    PROCESS DEVICE WITH IMPROVED POWER GENERATION
    5.
    发明申请
    PROCESS DEVICE WITH IMPROVED POWER GENERATION 审中-公开
    具有改进发电的过程装置

    公开(公告)号:WO2005086331A2

    公开(公告)日:2005-09-15

    申请号:PCT/US2005006596

    申请日:2005-03-02

    CPC classification number: G08C17/02 G08C17/00 Y02T10/166

    Abstract: A wireless field device (34, 50, 70, 80, 91, 100) is disclosed. The field device (34, 50, 70, 80, 91, 100) includes a wireless communications module (32) and an energy conversion module (38) . The wireless communications module (32) is configured to wirelessly communicate process-related information with another device. The energy conversion module (38) is coupled to the wireless communications module (32) . The energy conversion module (38) is configured to couple to a thermal source, and to generate electricity from thermal potential energy in the thermal source.

    Abstract translation: 公开了一种无线现场设备(34,50,70,80,91,100)。 现场设备(34,50,70,80,91,100)包括无线通信模块(32)和能量转换模块(38)。 无线通信模块(32)被配置为与另一设备无线地传送处理相关信息。 能量转换模块(38)耦合到无线通信模块(32)。 能量转换模块(38)被配置为耦合到热源,并且从热源中的热势能发电。

    METHOD AND APPARATUS FOR A DIRECT BONDED ISOLATED PRESSURE SENSOR
    6.
    发明申请
    METHOD AND APPARATUS FOR A DIRECT BONDED ISOLATED PRESSURE SENSOR 审中-公开
    用于直接粘结隔离压力传感器的方法和装置

    公开(公告)号:WO0150104A2

    公开(公告)日:2001-07-12

    申请号:PCT/US0034648

    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.

    Abstract translation: 一体形成为围绕中心通道的梁(102)形状的压力传感器(100,222)。 梁(102)具有由流体加压的整体的盲端(104)。 梁具有相对的端部(106),其被成形为提供在台阶角(107)的基部处开口的间隙(108)的阶梯式角(107),其中间隙(108)与流体隔离。 邻近盲端(104)的通道中的感测膜(112)具有随着压力而变化的电参数,以及从通道延伸出来并且离开间隙的电引线(110)。 密封件(115)围绕引线(110)填充间隙(108),并且密封件(115)填充阶梯式角部(107)的一部分。 传感器(100)优选通过单晶氧化铝层(114,116)的直接接合形成。 应用包括工业压力变送器,航空航天和涡轮发动机压力传感。

    Method and apparatus for a direct bonded isolated pressure sensor

    公开(公告)号:AU2443201A

    公开(公告)日:2001-07-16

    申请号:AU2443201

    申请日:2000-12-20

    Applicant: ROSEMOUNT INC

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

    INSULATED CORE ELECTRODE FOR PH SENSOR

    公开(公告)号:CA2119436A1

    公开(公告)日:1993-04-29

    申请号:CA2119436

    申请日:1992-10-07

    Applicant: ROSEMOUNT INC

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

Patent Agency Ranking