Measuring and testing – Gas analysis – Moisture content or vapor pressure
Patent
1985-03-08
1986-04-01
Frankfort, Charles
Measuring and testing
Gas analysis
Moisture content or vapor pressure
73335, 374142, G01R 2704
Patent
active
045789983
ABSTRACT:
A moisture content measuring system for sheet material which uses microwave radiation. Two pairs of microwave radiators and receivers are combined with surface and below surface temperature measuring sensors to furnish data to a computer which interprets the data and yields moisture readings. Each pair of microwave radiator and receiver straddles the sheet test sample and checks microwave transmission through the sample and reflected from it, but the two radiators are cross polarized so that signal interchange between them is avoided.
REFERENCES:
patent: 3644826 (1972-02-01), Cornetet, Jr.
patent: 4484133 (1984-11-01), Riggin
patent: 4485284 (1984-11-01), Pakulis
Armstrong World Industries Inc.
Frankfort Charles
Schuster David R.
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