Capacitance Fuel Level Sender

Able to be bent or cut.

Capacitance-based liquid-level senders are the smart choice where ruggedness is key.

Centroid fuel senders determine fuel level by measuring the capacitance between their metal inner and outer tubes.  Capacitance increases as liquid replaces air between the tubes.  No float is required.  They are designed for non-conducting liquids only: oil, diesel, and gasoline with up to 10% ethanol.

Electronics in the sender’s head convert capacitance into resistance, voltage, or milliamps, as determined by which output is ordered.  Typically the electronics are powered by an ignition voltage connection.