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Many large transport aircraft use a different fuel gauge design principle. An aircraft may use a number (around 30 on an A320) of low voltage tubular capacitor probes where the fuel becomes the dielectric. At different fuel levels, different values of capacitance are measured and therefore the level of fuel can be determined.
Since capacitance level sensors are electronic devices, phase modulation and the use of higher frequencies makes the sensor suitable for applications in which dielectric constants are similar. The sensor contains no moving parts, is rugged, simple to use, and easy to clean, and can be designed for high temperature and pressure applications.
Capacitive sensors are constructed from many different media, such as copper, indium tin oxide (ITO) and printed ink. Copper capacitive sensors can be implemented on standard FR4 PCBs as well as on flexible material. ITO allows the capacitive sensor to be up to 90% transparent (for one layer solutions, such as touch phone screens).
Capacitive displacement sensors share many similarities to eddy current (or inductive) displacement sensors; however capacitive sensors use an electric field as opposed to the magnetic field used by eddy current sensors [10] [11] This leads to a variety of differences between the two sensing technologies, with the most notable differences being ...
The assembled controller takes input from several sensors in order to manage the fuel injectors, including a throttle position sensor (TPS), exhaust gas oxygen sensor (EGO or O 2 sensor), MAP sensor, Crankshaft Position Sensor, optional Camshaft Position Sensor, Intake Air Temperature sensor (IAT), and a Coolant Temperature Sensor (CLT).
As fuel is burned, more air enters the tank and the capacitance increases; this is read by a computer and the fuel amount is calculated and displayed to the pilots. Magneto Resistive Level Sensor Recent advances in magnetoresistive technology have evolved new fuel level sensors for general aviation applications.
The car is the direct replacement to the Lexus RC F GT500, which competed in the 2014 to 2016 Super GT seasons. [41] The LC500 GT500 car made its début at the 2017 Okayama GT 300km , [ 42 ] and claimed 14 race wins of the 24 overall entered races from 2017 until 2019 (26 with the Super GT/DTM crossover events).
Liquid fuel by itself (i.e. without oxygen present) isn't flammable, therefore surrounding the fuel pump by fuel reduces the risk of fire; In-tank fuel pumps are often part of an assembly consisting of the fuel pump, fuel strainer and fuel level sensor (the latter used for the fuel gauge).
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