The accuracy for this method largely depends on the spacing between the calibration points, and can be estimated using Equation 8.

Figure 4-23, Figure 4-24, and Figure 4-25 each show an example of a possible error curve for this setup with a different number of calibration points.

Figure 4-23 Two Sensors Peak Calibrated Plus Lookup Table Error, 8 Cal Points, ≈ 4° Peak-to-Peak Error

Figure 4-25 Two Sensors Peak Calibrated Plus Lookup Table Error, 25 Cal Points, ≈ 1° Peak-to-Peak Error

Figure 4-24 Two Sensors Peak Calibrated Plus Lookup Table Error, 14 Cal Points, ≈ 2° Peak-to-Peak Error