Table 6: Test result under different flow velocity with real sand quality equal to 30g and the diameter between 70 to 140 mesh.

     Velocity(m/s)      Real Value(g) Measurement Value(g) Measurement Error(%)
     9.3      30 23.8721 61.28
     10.0      30 24.9537 50.46
     13.2      30 25.124 48.76
     16.0      30 29.6418 3.58
     18.1      30 29.9182 0.82
     20.8      30 29.6561 3.44
     23.3      30 29.6724 3.28
     24.6      30 29.6936 3.06
     26.7      30 29.7851 2.15
     28.5      30 29.8013 1.99
     30.1      30 30.0976 0.98
     32.5      30 30.1058 1.06