FUEL-QUANTITY INDICATORS


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FUEL-QUANTITY INDICATORS
FUEL-QUANTITY INDICATORSFuel-quantity indicators for most light aircraft and all large commercial aircraft are either electrically or electronically operated. The electrically operated indicating systems are usually of the variable-resistor type, and the electronically operated systems are of the capacitor type.Electric fuel-quantity indicators utilize a variable resistor in the tank unit or sensor. The resistor is in the form of a rheostat or potentiometer, depending on the method of indication. The fuel-quantity signal provided as a float arm in the tank changes the resistance of the sensor as the fuel level changes. A schematic diagram of a fuel-quantity-indicating system with a rheostat-type sensor is shown in
Citation
Thomas K. Eismin: Aircraft Electricity and Electronics, Sixth Edition. FUEL-QUANTITY INDICATORS, Chapter (McGraw-Hill Professional, 2014), AccessEngineering Export