I would like to draw a circuit diagram for a toroidal fluid conductivity sensor and simulate it. It follows a principle shown by the above image, the drive coil is connected to an AC source and induces a current in the sample, the current in the sample is proportional to its conductivity, this current produces a voltage across the pickup coil which can be measured and related to the conductivity of the fluid.
I am not able to figure out how to draw a circuit diagram for the sample whose conductivity is being measured. I am fairly new to analog electronics so any help would be amazing. If you need more details please let me know.