some clear

i need the circuit diagram for diesel level measurment
that is , the circuit is designed to measure diesel(or fuel) level in diesel tank(container).

this is more of a mechanical problem. u need a bar of resistive material with a floatable cursor so that u have basically a nice long potentiometer then u can use ohms laws to calculate the level for example u could control the curent in a meter like that of a car fuel gage.