Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Frequency of cyclic current or voltage
Patent
1985-08-16
1987-12-29
Eisenzopf, Reinhard J.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Frequency of cyclic current or voltage
343753, G01R 2726
Patent
active
047163607
ABSTRACT:
An apparatus and method for providing improved measurement of moisture in a sample cell by use of microwave energy. Improved accuracy and reliability of the moisture determination is obtained by causing solely parallel beam, planar wavefront microwave energy to be passed through the sample in the test cell. The apparatus includes transmitting and receiving antennas and refractor elements (lenses) interposed between the antennas and the sample cell. The antennas, refractor elements, and sample cell may be located within an anechoic chamber. The invention comprehends locating the sample cell in the near field of the transmitting antenna and coordinating the characteristics of the refractor elements with the spacing of the antennas relative to the sample cell.
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Advanced Moisture Technology, Inc.
Eisenzopf Reinhard J.
Solis Jose M.
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