I want to make a vortex flowmeter. Please help me.

姚徐龙

I want to make a vortex flowmeter. Please help me. [Copy link]

This circuit is a vortex flowmeter

The static capacitance of the ceramic piece is 4.7PF, the piezoelectric constant is 550PC/N, and the material of P-5 is d33. Please help me calculate the values of C1, C8, R2 and R12.

Now change the capacitance of C1 and C8 to 3300PF and the flow rate to 7L/min. The above measurement is accurate. The following is inaccurate. The smaller the flow rate, the greater the error. Thank you very much. The following is differential amplification.

盛世辉煌电子科学

I think the power supply can add energy storage capacitors

姚徐龙

Shengshihuihuang Electronic Science published on 2024-7-16 09:11 I think the power supply can add energy storage capacitors

The original circuit has added filter capacitors. Now it is found that the main power frequency interference affects the output of the signal