Working principle of resonant tuning fork density meter ！

The resonant tuning fork densitometer works based on the vibration principle of components, and the component part is the tuning fork part immersed in the measured liquid. The tuning fork part is vibrated by an internal piezoelectric device fixed at the bottom end of the fork body. The oscillation frequency is detected by a secondary piezoelectric device fixed at the other end of the fork, and then the signal is amplified by the circuit at the top.

The density of the liquid is closely related to the vibration frequency when the measured liquid flows. When the density of the measured liquid changes, the vibration frequency when the liquid flows also changes.

Through the following equation, the density of the measured liquid can be accurately calculated.

D= K0+K1T+K2T
D=uncalibrated density of the measured medium (KG/M3)
T= vibration frequency (MS)
K0, K1, K2 = constant