Electricity: measuring and testing – Conductor identification or location – Inaccessible
Patent
1974-08-22
1976-03-23
Rolinec, R. V.
Electricity: measuring and testing
Conductor identification or location
Inaccessible
324 30R, G01R 2714, G01N 2742
Patent
active
039463095
ABSTRACT:
A cell for measuring the electrical resistivity of a liquid contains four aligned and linearly spaced electrodes. A current source is connected to the end electrodes and an amplifier is connected directly to the inner electrodes. The amplifier has a high input impedance characteristic sufficient to limit the current carried by the inner electrodes to a small value which renders it essentially independent of any fouling of the inner electrodes. The amplifier is connected to the current source to control the current output thereof so as to maintain a constant predetermined voltage drop across the inner electrodes whereby the output of the amplifier is independent of any IR drop due to the fouling of the outer electrodes. A reference and a measuring cell may each be connected as above with the high input impedance amplifier of the measuring cell controlling the current sources for both cells and the corresponding amplifier of the reference cell driving a suitable output indicator.
REFERENCES:
patent: 2832734 (1958-04-01), Eckfeldt
patent: 2871446 (1959-01-01), Wann
patent: 3358223 (1967-12-01), Birnstingl
patent: 3382434 (1968-05-01), Gibson, Jr.
patent: 3443222 (1969-05-01), Mildwater
patent: 3566233 (1971-02-01), Kahn
C. M. Boyd, G. W. Johnson, "Studying Zooplankton Populations. . ." Trans. Applns, Sea Going Computers Symp. (Marine Techn. Soc. America) 1968.
Ellis Christopher Ian Arthur
Roughton Charles Lyn
Hille R.
Rolinec R. V.
LandOfFree
Cell for measuring electrical resistivity of a liquid does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Cell for measuring electrical resistivity of a liquid, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cell for measuring electrical resistivity of a liquid will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1645719