Electricity: measuring and testing – Electrolyte properties – Using a conductivity determining device
Reexamination Certificate
2008-07-29
2008-07-29
Gutierrez, Diego (Department: 2831)
Electricity: measuring and testing
Electrolyte properties
Using a conductivity determining device
C324S439000, C324S204000
Reexamination Certificate
active
07405572
ABSTRACT:
A non metallic flow through electrodeless conductivity sensor is provided with a conduit having primary and secondary process fluid flowpaths to form a fluid loop. At least one drive and one sense toroid surround the conduit on the fluid loop. Voltage supplied to the drive toroid induces a current in the sense toroid via the fluid loop to eliminate any need for metallic electrodes in contact with the process fluid. At least one additional drive and/or sense toroid is disposed on the fluid loop to enhance induction. Optionally one or more sense coils are disposed about the conduit outside of the fluid loop to cancel out stray electrical noise. An optional conductor disposed along the conduit detects any fluid leakage through changes in resistance thereof.
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Derwent Abstract of JP2001147218A2: Electrodeless Sensor (2 Pgs.).
Bower Michael M.
McKinlay Donald S.
Quackenbush John Kevin
Talutis Stephen B.
Gutierrez Diego
He Amy
Invensys Systems Inc.
Sampson & Associates P.C.
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