Author : Saqlain Raza and R.P.Chaudhari

A low cost sensor equipped with a tuning fork is proposed, to provide liquid density measurement with a portable method. The sensor is based on the resonance theory and has precise accuracy for the application. The device is composed of sensor, driving electronics and a computer unit for density calculation. The tuning fork vibrates at its natural frequency in the air, when immersed in the liquid the fork frequency is damped due to the added mass of the fork. This damped frequency is evaluated and calibrated to show the density of the liquid under consideration.

Keywords: Tuning fork; portable method; precise accuracy; natural frequency; damped frequency; density.

Article published in International Journal of Current Engineering and Technology, Vol.5, No.1 (Feb-2015)