Electricity: measuring and testing – Electrolyte properties – Using a conductivity determining device
Reexamination Certificate
2007-10-09
2007-10-09
Deb, Anjan K. (Department: 2858)
Electricity: measuring and testing
Electrolyte properties
Using a conductivity determining device
C324S439000, C324S204000
Reexamination Certificate
active
11650154
ABSTRACT:
A non metallic flow through electrodeless conductivity sensor is provided with a conduit having primary and secondary process fluid flow paths 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. A temperature detector is supported within an electrically non-conductive holder extending into the fluid flow path, so that the detector is free from physical contact with the fluid. An optional enclosure is provided with ports to enable a user to purge any gas permeating the conduit walls.
REFERENCES:
patent: 2709785 (1955-05-01), Fielden
patent: RE24420 (1958-01-01), Fielden
patent: 3292077 (1966-12-01), Sloughter
patent: 3396331 (1968-08-01), Sperry, III
patent: 3404335 (1968-10-01), Kidder
patent: 3404336 (1968-10-01), Rosenthal
patent: 3417329 (1968-12-01), Landis et al.
patent: 3566841 (1971-03-01), Gerrish et al.
patent: 3806798 (1974-04-01), Gross
patent: 3867688 (1975-02-01), Koski
patent: 3989009 (1976-11-01), Robar et al.
patent: 3993945 (1976-11-01), Warmoth et al.
patent: 4010715 (1977-03-01), Robar et al.
patent: 4138639 (1979-02-01), Hutchins
patent: 4220920 (1980-09-01), Gross
patent: 4491798 (1985-01-01), Palmer et al.
patent: 4740755 (1988-04-01), Ogawa
patent: 4751466 (1988-06-01), Colvin et al.
patent: 4825168 (1989-04-01), Ogawa et al.
patent: 5003267 (1991-03-01), Coleman
patent: 5025220 (1991-06-01), Colvin et al.
patent: 5089781 (1992-02-01), Arichika et al.
patent: 5157332 (1992-10-01), Reese
patent: 5252925 (1993-10-01), Matsumoto et al.
patent: 5268642 (1993-12-01), Uchidomi
patent: 5341102 (1994-08-01), Akiyama et al.
patent: 5510716 (1996-04-01), Buffaloe, IV et al.
patent: 5510717 (1996-04-01), Buffaloe, IV et al.
patent: 5570026 (1996-10-01), Buffaloe, IV et al.
patent: 5612622 (1997-03-01), Goldman et al.
patent: 5631552 (1997-05-01), Ogawa et al.
patent: 5659251 (1997-08-01), Wakamatsu
patent: 5680051 (1997-10-01), Wakamatsu
patent: 5793214 (1998-08-01), Wakamatsu
patent: 5900726 (1999-05-01), Brugger et al.
patent: 5959455 (1999-09-01), Brown
patent: 6075367 (2000-06-01), Brugger
patent: 6122956 (2000-09-01), Klausner et al.
patent: 6414493 (2002-07-01), Rezvani
patent: 6452371 (2002-09-01), Brugger
patent: 6489785 (2002-12-01), McAllister
patent: 6653841 (2003-11-01), Koerdt et al.
patent: 7078909 (2006-07-01), Feng et al.
patent: 2004/0012395 (2004-01-01), Salamitou
patent: 2004/0249336 (2004-12-01), Faries et al.
patent: 2001147218 (2001-05-01), None
C.W. Extrand, L. Monson; Gas Permeation Resistance of a Perfluoroalkoxy-Tetrafluoroethylene Copolymer; Journal of Applied Polymer Science; 2006; vol. 100, pp. 2122-2125.
Hydrofluoric Acid Monitors, CM-200/210; HORIBA, Bulletin: HRE-1889C, (pgs. 2).
Bower Michael M.
McKinlay Donald S.
Quackenbush John Kevin
Talutis Stephen B.
Tower, III Daniel G.
Deb Anjan K.
Invensys Systems Inc.
Sampson & Associates P.C.
LandOfFree
Non-metallic flow-through electrodeless conductivity sensor... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Non-metallic flow-through electrodeless conductivity sensor..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Non-metallic flow-through electrodeless conductivity sensor... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3883687