Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Frequency of cyclic current or voltage
Patent
1976-04-13
1977-09-06
Rolinec, Rudolph V.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Frequency of cyclic current or voltage
324 29, G01N 2742
Patent
active
040471004
ABSTRACT:
Method and apparatus for measuring the conductivity ratio of a sample for determining deviation from a standard and particularly suited for use in measuring the syrup to water ratio in soft drinks and the like. A pair of conductivity cells for receiving the standard and sample, with the cells connected in a bridge circuit operated at relatively high frequency and having a full wave recitifier at the bridge output providing an input to an operational amplifier for driving an indicating meter which can be read in percent deviation from the standard. A side by side cell mounting with electrodes in the lower cell sections and a metal heat exchanger forming the upper cell sections. A pair of plungers for insertion into the cells for equalizing the amounts of material in the cells and the temperature of the materials. A calibration procedure for adapting the instrument for use with various products.
REFERENCES:
patent: 2837271 (1958-06-01), Haglund
patent: 2922103 (1960-01-01), Smith
patent: 3512080 (1970-05-01), Hanson
patent: 3664306 (1972-05-01), Quayle
Rolinec Rudolph V.
Simekus, Inc.
Tokar Michael J.
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