0You can build a Continuous Water Level Sensor. You will need the followings
1. Stainless steel capacitive water level sensing probe
2. 555 Oscillator circuit
3. 89S52 microcontroller board with LCD display or LED display
4. 5V Dc power supply
Method:
Use 555 oscillator to generate frequency using capacitive water level sensor
Count the frequency generated by the 555 oscillator using microcontroller board
Display the water level after relating frequency with water level.
Tips:
Dielectric constant of water is 80 times more than that of air, hence capacitance increases with increating water level.
