Fuel level sensoris a low cost capacitance type level sensor. It is designed for monitoring levels in fuel tanks of vehicles, Bulk storage tanks fitted on vehicles, diesel storage tanks. The Design is simple & light weight. It measures the level accurately and reliably. The sensor output is connected to vehicle monitoring and tracking system or level indicators. The sensor consists of measuring probe which is encircled with a reference probe. This given more linear output and is not affected by turbulence inside the tank. Fuel Level Sensor As the fuel level increases, the capacitance value also increases. The fuel acts as the dielectric between electrodes. The increase in capacitance directly proportional to increase in fuel level. This change in capacitance is measured and converted into 4-20mA, 0-5V, 0-10V, RS485 O/P.