DEVICE DETERMINING CONCENTRATION OF AQUEOUS-ALCOHOLIC SOLUTION Russian patent published in 1999 - IPC

FIELD: quality inspection of wine and vodka articles. SUBSTANCE: proposed device includes capacitive sensor with sensitive element which capacity depends on dielectric permittivity of aqueous-alcoholic solution. Capacitive sensor can be manufactured in various ways, in particular, in the form of generator with re-tuned frequency in which master circuit capacitance of sensitive element is placed and frequency discriminator which voltage across output depends on capacitance of sensitive element connected in series and consequently on concentration of aqueous- alcoholic solution. EFFECT: improved functional reliability of device. 5 dwg