Title:
METHOD AND APPARATUS FOR PRESSURE MEASUREMENT USING FILL TUBE
Document Type and Number:
WIPO Patent Application WO/2010/065286
Kind Code:
A8
Abstract:
A pressure sensor (56) includes a fill tube (93) which is arranged to couple to a process pressure. A sensor (98) is coupled to the fill tube (93) and is configured to measure pressure of fluid in the fill tube (93) as a function of a change of a physical property of the fill tube (93). Circuitry (74) is provided to measure pressure based upon the change of the physical property of the fill tube (93).
Inventors:
WILLCOX CHARLES R (US)
HEDTKE ROBERT C (US)
LU LIANG-JU (US)
HEDTKE ROBERT C (US)
LU LIANG-JU (US)
Application Number:
PCT/US2009/064716
Publication Date:
December 29, 2010
Filing Date:
November 17, 2009
Export Citation:
Assignee:
ROSEMOUNT INC (US)
WILLCOX CHARLES R (US)
HEDTKE ROBERT C (US)
LU LIANG-JU (US)
WILLCOX CHARLES R (US)
HEDTKE ROBERT C (US)
LU LIANG-JU (US)
International Classes:
G01L9/16; G01L9/00; G01L13/02; G01L13/06; G01L15/00; G01L23/12; G01L23/14
Attorney, Agent or Firm:
CHAMPLIN, Judson K. et al. (Champlin & Kelly P.A.,900 Second Avenue South, Suite 140, Minneapolis MN, US)
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