design ultrasonic oxygen sensor circuit

this desing adopting the ultrasonic technology, is an oxygen sensor to detect oxygen concentration and gas

Volumetric Flow Rate.

Range of Concentration : 21%~99 %

Resolution : 0.1%Accuracy

Range of Flow : 0~10L/min

Resolution 0.1L/min

Accuracy±0.2L/min or 5% reading,

Sensor works as soon as power on;

10s to within specified accuracy;

Digital Output