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公开(公告)号：DE69420853D1
公开(公告)日：1999-10-28
申请号：DE69420853
申请日：1994-07-29
Applicant: ROSEMOUNT INC
Inventor： LOUWAGIE BENNETT , MUNSON GREGORY , WIKLUND DAVID , ZWEBER MICHAEL , BRODEN DAVID , BISCHOFF BRIAN , CORPRON GARY
IPC: G01F1/36 , G01F1/88 , G01F15/06 , G01F23/14 , G01F23/18 , G01L7/08 , G01L9/04 , G01L19/00 , G01L19/08
Abstract: A two-wire transmitter senses a pressure using an internal pressure sensor. The transmitter includes an input for receiving a process variable from a remote sensor which is separated from the transmitter. Circuitry in the transmitters transmits information on a two-wire process control loop which is related to the sensed pressure and the process variable.
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公开(公告)号：DE69214940T2
公开(公告)日：1997-05-28
申请号：DE69214940
申请日：1992-03-24
Applicant: ROSEMOUNT INC
Inventor： BRODEN DAVID , BISCHOFF BRIAN , LOUWAGIE BENNETT
Abstract: A metal thin film bonds a semiconductor bonding region of a diaphragm layer to a ceramic bonding region of a high modulus support block. The arrangement isolates a pressure sensing diaphragm from undesired strain, improving sensor accuracy. A passageway through the support block couples the fluid pressure to the sensing diaphragm to deflect it. Capacitive coupling between the diaphragm and a capacitor plate on the support block sense the deflection and provide an output representative of pressure.
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公开(公告)号：DE69214940D1
公开(公告)日：1996-12-05
申请号：DE69214940
申请日：1992-03-24
Applicant: ROSEMOUNT INC
Inventor： BRODEN DAVID , BISCHOFF BRIAN , LOUWAGIE BENNETT
Abstract: A metal thin film bonds a semiconductor bonding region of a diaphragm layer to a ceramic bonding region of a high modulus support block. The arrangement isolates a pressure sensing diaphragm from undesired strain, improving sensor accuracy. A passageway through the support block couples the fluid pressure to the sensing diaphragm to deflect it. Capacitive coupling between the diaphragm and a capacitor plate on the support block sense the deflection and provide an output representative of pressure.
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公开(公告)号：DE69420853T2
公开(公告)日：2000-05-18
申请号：DE69420853
申请日：1994-07-29
Applicant: ROSEMOUNT INC
Inventor： LOUWAGIE BENNETT , MUNSON GREGORY , WIKLUND DAVID , ZWEBER MICHAEL , BRODEN DAVID , BISCHOFF BRIAN , CORPRON GARY
IPC: G01F1/36 , G01F1/88 , G01F15/06 , G01F23/14 , G01F23/18 , G01L7/08 , G01L9/04 , G01L19/00 , G01L19/08
Abstract: A two-wire transmitter senses a pressure using an internal pressure sensor. The transmitter includes an input for receiving a process variable from a remote sensor which is separated from the transmitter. Circuitry in the transmitters transmits information on a two-wire process control loop which is related to the sensed pressure and the process variable.
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