公开(公告)号：CA1266803A

公开(公告)日：1990-03-20

申请号：CA529274

申请日：1987-02-09

Applicant: ROSEMOUNT INC

Inventor： SITTLER FRED C ,  TOY ADRIAN C

IPC: G01K7/18 ,  H01C1/028 ,  H01C1/032 ,  H01C7/02 ,  H01C17/00 ,  H01C3/04

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

公开(公告)号：CA2552615A1

公开(公告)日：2005-09-15

申请号：CA2552615

申请日：2005-03-02

Applicant: ROSEMOUNT INC

Inventor： TOY ADRIAN C ,  PELUSO MARCOS ,  KARSCHNIA ROBERT J

IPC: F02B63/04 ,  F02G1/043 ,  G08C17/00 ,  G08C17/02 ,  H04B1/04

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 modu le (32) is configured to wirelessly communicate process-related information wit h 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.

公开(公告)号：AU2629901A

公开(公告)日：2001-07-16

申请号：AU2629901

申请日：2001-01-05

Applicant: ROSEMOUNT INC

Inventor： ROMO MARK G ,  RUD STANLEY E JR ,  LUTZ MARK A ,  SITTLER FRED C ,  TOY ADRIAN C

IPC: G01L9/12 ,  B81B3/00 ,  B81B7/00 ,  B81C99/00 ,  G01L9/00 ,  H01L29/84

Abstract: A sensor has an electrical interconnect grown in a cavity between first and second layers that are bonded together. Electrically conductive grain growth material is selectively deposited on at least one of two electrically conductive film interconnect regions that face one another across the cavity. The grain growth material is then grown upon predetermined conditions to form the electrical interconnect between the two interconnect regions. A sensor element deposited in the cavity is electrically coupled between the layers by the interconnect. The grain growth material can be tantalum that is heated after the layers are bonded to grow grains that interconnect the electrically conductive films.

公开(公告)号：CA2212384A1

公开(公告)日：1996-09-06

申请号：CA2212384

申请日：1996-02-22

Applicant: ROSEMOUNT INC

Inventor： TOY ADRIAN C ,  FRICK ROGER L ,  LOUWAGIE BENNETT L

IPC: G01L9/00 ,  G01L9/12 ,  G01L13/06 ,  G05D16/20

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.

公开(公告)号：CA1316715C

公开(公告)日：1993-04-27

申请号：CA590423

申请日：1989-02-08

Applicant: ROSEMOUNT INC

Inventor： SITTLER FRED C ,  NETI RADHAKRISHNA M ,  TOY ADRIAN C

IPC: G01N27/30 ,  G01N27/42 ,  G01N25/64 ,  G01N27/416

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

公开(公告)号：EP0327535A4

公开(公告)日：1989-04-27

申请号：EP87901835

申请日：1987-02-06

Applicant: ROSEMOUNT INC

Inventor： SITTLER FRED C ,  TOY ADRIAN C

IPC: G01K7/18 ,  H01C1/028 ,  H01C1/032 ,  H01C7/02 ,  H01C17/00

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

公开(公告)号：EP0609326A4

公开(公告)日：1995-05-03

申请号：EP92922017

申请日：1992-10-07

Applicant: ROSEMOUNT INC

Inventor： BENTON BARRY W ,  MAJERUS LAWRENCE R ,  RUTT DONALD R ,  SITTLER FRED C ,  TOY ADRIAN C

IPC: G01N27/30 ,  G01N27/333 ,  G01N27/26

CPC classification number: G01N27/333