Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
David A. Broden0
Date of Patent
May 27, 2008
0Patent Application Number
117247470
Date Filed
March 16, 2007
0Patent Primary Examiner
Patent abstract
A pressure transmitter for measuring a pressure of a process fluid includes a pressure sensor, a hydraulic relay system and a pressure sensor fill fluid. The pressure sensor senses the pressure of the process fluid, and the hydraulic relay system provides a communication channel between the process fluid and the pressure sensor. The pressure sensor fill fluid in the hydraulic relay system comprises a first hydraulic fluid and a first volume of nano-particles. The first hydraulic fluid transmits a change in the pressure of the process fluid to the sensor. The first volume of nano-particles is suspended within the first hydraulic fluid and alters properties of the pressure sensor fill fluid.
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