nkuck
Newbie level 1

I have a question regarding the application of a Hartley oscillator to a problem and am interested in knowing if there might be a better way. I need to simply know if there is the presence of a liquid in a plastic tube or not. My thought was to use a Hartley oscillator with closely matched inductors, and run the tube as a core through one of them. My thought is that when a liquid is present, the coils will be imbalanced and the result could be detected. Possible?