Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Frequency of cyclic current or voltage
Patent
1981-12-23
1984-11-20
Krawczewicz, Stanley T.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Frequency of cyclic current or voltage
324 585B, G01R 2704
Patent
active
044841337
ABSTRACT:
Microwave moisture measuring apparatus for on-line monitoring of a paper web in which a source of radiation is measured and directed towards the web. Detectors measure the transmitted and reflected energy, and a microcomputer, also having inputs in accordance with the temperature and weight of the web, provides an indication of the moisture content of the web.
REFERENCES:
patent: 3622874 (1971-11-01), Chasek
patent: 3815019 (1974-06-01), Wiles
Beyer et al., Microwave Thickness Detector, The Review of Scientific Instruments, Mar. 1960, pp. 313-316.
Krawczewicz Stanley T.
Sentrol Systems Ltd.
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