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公开(公告)号：WO1992015850A1
公开(公告)日：1992-09-17
申请号：PCT/US1992001683
申请日：1992-03-02
Applicant: ROSEMOUNT INC.
Inventor： ROSEMOUNT INC. , FRICK, Roger, F.
IPC: G01L07/08
CPC classification number: G01L9/12
Abstract: In a two wire transmitter (10), a capacitive sensor (5) senses differential pressure and provides a differential pressure signal based on the differential pressure sensed. The differential pressure signal varies with variations in static pressure. A capacitive compensator (CL1, CL2) has a capacitive value substantially unaffected by variations in static pressure, and is coupled to the capacitive sensor (5) to compensate the differential pressure signal for variations due to variations in the static pressure.
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