Using Capacitance-to-Digital converters AD7150 or AD7747 to measure fluid levels
Sounds like a fun project. Why not try the EVAL-AD7150EBZ is a fully featured evaluation board for the AD7150. The evaluation board can be operated in standalone mode ( either battery-powered or with external power supply) or connected to a PC via a standard USB interface. When operated with a PC, software is provided enabling the user to perform detailed analysis of the CDC's performance. This software includes the technical note describing the operation and set up of the evaluation board. Also how you package the sensor will have a big impact on how it works.