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Table 1 Relationship between sensor inclined angles, corresponding heights of fuel, different volumes of fuel, and output voltages

From: Design, construction, and implementation of a remote fuel-level monitoring system

Angle (degree) Height (cm) Volume (liters) Output voltage (volts)
Measured (geometry) Calculated Measured (geometry) Calculated Measured (geometry) Calculated
  h = 37.5 - 23 cos θ V = A× h V = 0.729 (37.5 - 23 cos θ) V out = 9 280 cos - 1 37.5 - h 23
0 14.50 14.50 10.57 10.57 0.00 0.000
5 14.60 14.59 10.64 10.63 0.16 0.163
10 14.85 14.85 10.83 10.83 0.32 0.322
15 15.30 15.28 11.15 11.14 0.48 0.481
20 15.90 15.89 11.59 11.58 0.64 0.644
25 16.65 16.65 12.14 12.14 0.80 0.803
30 17.60 17.58 12.83 12.82 0.96 0.964
35 18.65 18.66 13.60 13.60 1.13 1.125
40 19.85 19.88 14.47 14.49 1.29 1.286
45 21.25 21.24 15.49 15.48 1.45 1.447
50 22.70 22.72 16.55 16.56 1.61 1.608
55 24.30 24.31 17.71 17.72 1.77 1.768
60 26.00 26.00 18.95 18.95 1.93 1.929
65 27.80 27.78 20.27 20.25 2.09 2.089
70 29.65 29.63 21.61 21.60 2.25 2.250
75 31.65 31.55 23.00 23.00 2.41 2.411
80 33.50 33.51 24.42 24.43 2.57 2.572