MODE OF COMPENSATION OF MULTIPLICATIVE TEMPERATURE ERROR OF SENSOR WITH VIBRATORY ELEMENT (VARIANTS) Russian patent published in 2008 - IPC G01K7/25 G01K7/34 

FIELD: invention may be used in measuring technique at measuring of strength, pressure, acceleration etc.

SUBSTANCE: mode is in changing coefficient of amplification of normalizing amplifier by way of insertion in feedback of thermally independent resistance. They make preliminary tuning of transformer at positive temperature and define value of resistance of feedback of normalizing amplifier R₂. They define initial frequency of output signal and frequency of output signal at extreme values of working temperature diapason. For each value of temperature they calculate deviation of frequency of output signal from nominal value of measured parameter. For sensor of temperature coefficient of resistance of thermally dependent resistance they find values of thermally dependent resistance R_α and thermally independent resistance R_2н. They set thermally dependent resistance of calculated value R_α in feedback of normalizing amplifier in-series with thermally independent resistance R_2н. By analogy they execute mode where they define value of supporting resistance R₁. They find values of thermally dependent resistance R_α and thermally_{independent resistance R1н. They set thermally dependent resistance of calculated value Rα in-series with thermally independent resistance R1н.}

EFFECT: increases accuracy.

2 cl, 4 dwg