Fluid capacitance sensing means and method

Patent · Sat Jun 16 04:00:00 EDT 1990

OSTI ID:7169964

Dowling, D J; Sims, J C

This patent describes a capacitive fluid sensor. It comprises: means receiving a stream of fluid for converting the fluid flow to annular fluid flow; and capacitive sensing means for providing a capacitance signal related to the dielectric constant of the annular flowing fluid. The capacitive sensing means includes: a cylindrical electrode, electrode means, cylindrical in shape, spatially arranged with the electrode so that the fluid flows between both the electrode and the electrode means for providing an internal capacitance for the capacitive sensing means substantially greater than a capacitance derived from the dielectric constant of the fluid, and output means connected to the electrode and to the electrode means for providing the capacitance signal.

• Assignee: Texaco Inc., White Plains, NY
• Patent Number(s): A; US 4894604
• Application Number: PPN: US 7-269341A
• OSTI ID: 7169964
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420400* -- Engineering-- Heat Transfer & Fluid Flow
440800 -- Miscellaneous Instrumentation-- (1990-)
47 OTHER INSTRUMENTATION
CAPACITANCE
DESIGN
DIELECTRIC PROPERTIES
ELECTRIC MEASURING INSTRUMENTS
ELECTRICAL EQUIPMENT
ELECTRICAL PROPERTIES
ELECTRODES
EQUIPMENT
FLOWMETERS
FLUID FLOW
FLUIDS
MEASURING INSTRUMENTS
METERS
PHYSICAL PROPERTIES