With s number of sensors n° apart, the sensor system output varies for every setup, but produces s × 2 regions. For evenly spaced regions, place the sensors so that n = (180 / s)° apart. For example, Figure 4-8 and Figure 4-9 use s = 3 sensors and n = (180 / 3) = 60° and produces 3 × 2 = 6 regions. Region sizes can be adjusted by changing the degree n between each sensor. There is no calibration phase, so the peak amplitude is unknown; therefore, an example amplitude is shown. To avoid losing the benefit of each sensor, n between any given two sensors cannot approximately equal either 0° or 180°.

Figure 4-8 Three Sensors 60° Apart

Figure 4-9 Three Sensors 60° Apart Uncalibrated Data