PROGRESS 13: SENSOR TESTING 3

In order to get frequency same as the frequency average in the Sensor Testing 2, I need to reconstruct the wall of the sensor. After several testing, the suitable wall to get approximately same as the frequency average is 0.65 cm height compared to 0.7 cm height in the Sensor Testing 2. The result are as below:

RED

Figure 13.1: Frequency = 12.48 kHz

BLUE

Figure 13.2: Frequency = 15.34 kHz

GREEN

Figure 13.3: Frequency = 9.54 kHz

Colour	Frequency Average (kHz) – 0.7cm wall	Frequency (kHz) – 0.65cm wall
Red	12	12.48
Blue	15	15.34
Green	9	9.54

Colour

Frequency Average (kHz) – 0.7cm wall

Frequency (kHz) – 0.65cm wall

Red

12

12.48

Blue

15

15.34

Green

9

9.54