In this analysis, three geometries having internal diameters of 2.5 inch, 4 inch and 6 inch were considered. Glass beads having a Sauter mean diameter of 332 µm were used in these experiments. Flow velocity of air at inlet was varied from 2.97-5.35 times the minimum fluidization velocity, while the range of particle Reynolds number and density ratio were held constant across the experiments. Measurements of differential pressure in different regions and interface height are reported. Results obtained from this systematic study provide a valuable database for a rigorous validation and uncertainty quantification of computational models and constitutive relations besides aiding in understanding the hydrodynamics at different scales.