Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Frequency of cyclic current or voltage
Patent
1985-10-14
1988-07-05
Eisenzopf, Reinhard J.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Frequency of cyclic current or voltage
324 585A, 324 585R, 343785, G01N 2204
Patent
active
047557435
ABSTRACT:
A method and apparatus for measuring the moisture content or dry content of either high or low loss materials having a moisture content in excess of 50% utilizing a dielectric waveguide in contact with the material to be measured. The waveguide may be either embedded into the wall of a process pipe or it may pass through the pipe. The length of the waveguide can be controlled by the addition of reflecting spikes. The waveguide is designed and the microwave frequency so chosen that the microwave signal is reflected at least ten times. The strength of the output microwave signal is a function of the moisture content.
REFERENCES:
patent: 2794959 (1957-06-01), Fox
patent: 3079551 (1963-02-01), Walker
patent: 3500182 (1970-03-01), Reed et al.
patent: 3818333 (1974-06-01), Walker
patent: 4131845 (1978-12-01), Pakulis
patent: 4201956 (1980-05-01), Kienberger et al.
patent: 4203067 (1980-05-01), Fitzky et al.
patent: 4206399 (1980-06-01), Fitzky et al.
patent: 4600879 (1986-07-01), Scully et al.
patent: 4651085 (1987-03-01), Sakurai et al.
Jablonski, Power-Handling Capabilities of Circular Dielectric Waveguide at Millimeter Wavelengths, 2-1985, IEEE, vol. MTT-33, No. 2, pp. 85-89.
Natarajan et al., Microprocessor-Based Microwave Dielectric Measurement of Liquids by Waveguide Plunger Technique, IEEE, IM-34, No. 4, Dec. 1985, pp. 643-646.
Steel, Precision Waveguide Cells for the Measurement of Complex Permittivity of Lossy Liquids and Biological Tissue at 35 GHz, J. Phys. E. Sci. Instrum., 20 (1987), pp. 872-876.
deLoor, Dielectric Properties of Heterogeneous Mixtures Containing Water, The Journal of Microwave Power 3-2, Mar. 1968, pp. 67-73.
Eisenzopf Reinhard J.
Harvey Jack B.
Kemira Oy
LandOfFree
Method and apparatus for measuring the moisture content or dry-m does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for measuring the moisture content or dry-m, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for measuring the moisture content or dry-m will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2334366