Electricity: measuring and testing – Conductor identification or location – Inaccessible
Patent
1976-10-12
1978-08-15
Krawczewicz, Stanley T.
Electricity: measuring and testing
Conductor identification or location
Inaccessible
294 73, G01R 2726
Patent
active
041075994
ABSTRACT:
An electrode, forming a part of an apparatus for measuring the electrical impedance of a variety of sampled materials for the purpose of determining moisture content, is composed of a pair of spaced-apart conductors across which an electrical field is radiated. In a first embodiment, useful for a sample of grain or the like, the electrode comprises a box including a flat central electrode plate vertically mounted within and electrically isolated from the enclosing grounded walls of the box. In a second embodiment, adapted for stacked tissue paper or the like, the electrode comprises a pair of opposed plates, both of which are electrically driven by a sensing circuit. In a third embodiment, particularly suited for wood chips, the electrode comprises a front opening box including a flat central electrode plate mounted on and electrically isolated from a grounded backing plate. The forward walls of the box are pivotally mounted at the top of the backing plate so that the lower end of the box opens outwardly to ensure complete dumping of the sampled material. In a fourth embodiment, used for stacked lumber as it dries in a kiln, the electrode is provided by an elongated cylindrical rod which is inserted into the center of the stacked lumber, with the walls of the kiln or the rails supporting a car having the lumber stacked thereon, normally being formed from a metallic material, serving as grounded conductors.
REFERENCES:
patent: 2043241 (1936-06-01), Eyer
patent: 2759147 (1956-08-01), Stein
patent: 2829341 (1958-04-01), Gietter
patent: 3051894 (1962-08-01), Fathauer
patent: 3081429 (1963-03-01), Moe
patent: 3090004 (1963-05-01), Breen et al.
patent: 3559052 (1971-01-01), Fathauer
patent: 3566260 (1971-02-01), Johnston
patent: 3681685 (1972-08-01), Tarry et al.
patent: 3739264 (1973-06-01), Resh
patent: 3760267 (1973-09-01), Williams
LandOfFree
Electrode for an impedance measuring apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Electrode for an impedance measuring apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electrode for an impedance measuring apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1438605