VIBRATION SENSITIVE ELEMENT OF GAS DENSITY Russian patent published in 1998 - IPC

FIELD: measurement technology. SUBSTANCE: sensitive element of densimeter is essentially piezoelectric vibrator made as tuning fork connected to self-excited oscillator circuit. Distance g between tuning fork branches, width B and thickness H of tuning fork branches satisfies condition log<2B<H. At this relation, frequency sensitivity of tuning fork resonance oscillations to gas density increases. EFFECT: reduced error of measuring the low values of gas density or small density variations. 3 dwg