Table 5: Test result under different flow velocity with real sand quality equal to 20g and the diameter between 70 to 140 mesh.

     Velocity(m/s)      Real Value(g) Measurement Value(g) Measurement Error(%)
     9.3      20 14.0537 59.46
     10.0      20 15.1829 48.17
     13.2      20 17.3925 26.08
     16.0      20 19.6663 3.34
     18.1      20 19.7532 2.47
     20.8      20 19.8814 1.19
     23.3      20 19.7561 2.44
     24.6      20 19.9252 0.75
     26.7      20 19.9173 0.83
     28.5      20 19.9046 0.95
     30.1      20 20.2235 2.24
     32.5      20 20.3617 3.62