Level (pressure) sensor test
The following test was done in order to see if the pressure sensor was working correctly, it consisted on assembling the circuitry showed in figure 5 to activate the sensor and be able to measure its current output, according to the user manual we would obtain a lineal graphic with the maximum value of current (around 10.6 mA) at the maximum tank capacity (10 inches high), and by opening the escape valves and in consequence dropping the level of water the sensor would sense a change in pressure and translate that to an electrical signal which we measured in mA with help of a multimeter.