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G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
G05D11/00—Control of flow ratio
G05D11/02—Controlling ratio of two or more flows of fluid or fluent material
G05D11/035—Controlling ratio of two or more flows of fluid or fluent material with auxiliary non-electric power
G05D11/06—Controlling ratio of two or more flows of fluid or fluent material with auxiliary non-electric power by sensing density of mixture, e.g. using aerometer
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FR1093510D1953-11-041953-11-04
Method and device for automatic and continuous regulation of the composition of mixtures of liquids
ExpiredFR1093510A
(en)