Fluid Level Sensors Designed for 0.3 to 3 Meter Tanks

Fluid level sensors for fuel and other liquids have been designed using two resistor technologies. One method provides a sensor with a variable resistance 2 wire signal in the 0 to 500 ohm range for use with most conventional magnetic gauges. Another method provides a Potentiometric 3 wire signal for use with electronic gauges.

Both resistor technologies are suitable for fuel level sensors in trucks, off-road vehicles, and storage tanks. Descriptions of several recent applications are discussed.