DIFFERENTIAL PRESSURE TRANSMITTER WITH INTRINSIC VERIFICATION
1 Assignment
0 Petitions
Accused Products
Abstract
The present invention provides a dual sensor differential pressure transmitter with a single fill fluid volume that intrinsically eliminates process and environmental performance influences, increases signal level while substantially reducing product costs.
6 Citations
32 Claims
-
1-17. -17. (canceled)
-
18. A differential pressure transmitter, comprising:
-
a pair of flexible element assemblies each of which is in fluid communication with a respective port, each of said flexible element assemblies comprising; one or more convolutions and a flexible element end defining a ratio of spring rate to effective area, and an electrode capacitively coupled to said flexible element end for sensing a deflection thereof in response to an applied pressure, a connector tube containing a fill fluid for hydraulically coupling said flexible element assemblies, and means for determining a differential pressure applied to said ports based on the sensed deflections of said flexible element ends of said pair of flexible element assemblies. - View Dependent Claims (20, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
-
Specification