PHILIP C REESE
Radio and Television Technicians in Bourne, MA
License number
Massachusetts 8152
Expiration Date
Dec 31, 2000
Type
Master Technician
Address
Address
Bourne, MA 02532
Professional information
Three-Toroid Electrodeless Conductivity Cell
US Patent:
5157332, Oct 20, 1992
Filed:
Oct 13, 1989
Appl. No.:
7/421484
Inventors:
Philip C. Reese - Buzzards Bay MA
Assignee:
The Foxboro Company - Foxboro MA
International Classification:
G01N 2702, G01N 2774
US Classification:
324445
Abstract:
An electrodeless conductivity measuring cell having three toroids. In one arrangement, the three toroids are stacked together wherein the center toroid is used for sensing and the two outer toroids are the drive toroids. Alternatively, the center toroid may be used as the drive coil and the outer toroids used as sense coils. Washer-shaped, grounded discs are placed between the outer toroids and the center toroid to provide for improved noise rejection. A method of validating the fluid conductivity measurement of such a measuring cell. The fluid conductivity is measured with a three-cell configuration, and then it is measured with a two-cell configuration. If the conductivity is observed to be the same, the cells are likely functioning normally. If fluid leaks into the cell cavity, the measurement of conductivity will change.