Suspension plasma spray (SPS) process is an emerging coating process in which the suspension is atomized through the interaction with the gas flow coming from a plasma torch. In this study, an in-house effervescent atomizer of 1 mm orifice diameter was utilized to atomize an aqueous suspension of titanium dioxide particles for future usage in the SPS process. The aqueous suspension is prepared from submicron titanium dioxide (TiO2) solid particles with a 10% mass concentration. This atomizer can provide rather small-size droplets with a low injection pressure. The operating parameters were kept constant for all the experiments. The pressure of air and liquid was set at 140 kPa and the gas to liquid mass ratio (GLR) was 6%. In the SPS process, the characteristics of the droplets of suspension have a large impact on the mechanical and chemical properties of the coatings. The main objective of this study is to experimentally investigate the velocity profile and the size distribution of the droplets by utilizing non-intrusive optical methods. The Sauter mean diameter (SMD) and velocity of droplets were measured by using two different techniques; Phase Doppler Particle Anemometry (PDPA), and Particle Tracking Velocimetry (PTV). The measurement of the SMD and the droplet velocity shows a good agreement for the mentioned methods.