Table 4: Test result under different flow velocity with real sand quality equal to 10g and the diameter between 70 to 140 mesh.

     Velocity(m/s)      Real Value(g) Measurement Value(g) Measurement Error(%)
     9.3      10 1.5319 84.68
     10.0      10 1.5732 84.27
     13.2      10 1.7145 82.86
     16.0      10 9.6139 3.86
     18.1      10 9.7741 2.26
     20.8      10 9.7947 2.05
     23.3      10 9.6515 3.49
     24.6      10 9.9321 0.68
     26.7      10 9.8765 1.24
     28.5      10 9.6573 3.43
     30.1      10 10.0967 0.97
     32.5      10 10.0516 0.52