Table 1.

Measured data for the calibration of the load cell.

Weight	Output Digital Value	Sand Weight	Output Digital Value
25 g	151	750 g	560
50 g	165	775 g	575
75 g	178	800 g	589
100 g	194	825 g	605
200 g	251	850 g	618
425 g	379	875 g	632
450 g	393	900 g	647
475 g	405	925 g	662
500 g	419	950 g	675
525 g	433	975 g	688
550 g	448	1000 g	702
575 g	461	1025 g	716
600 g	476	1050 g	731
625 g	492	1075 g	745
650 g	505	1100 g	760
675 g	518	1125 g	773
700 g	531	1150 g	787
725 g	546	1175 g	801