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Some vessels store liquid until it is pumped out. The controller (LIC) acts to start and stop the pump within a specified band. For example, it may start the pump when the level rises to 0.6 m and stop the pump when the level falls to 0.4 m. High and low level alarms (LAH and LAL) warn operating personnel that levels are outside predefined limits.
Magnetoresistance type fuel level sensors, now becoming common in small aircraft applications, offer a potential alternative for automotive use.These fuel level sensors work similar to the potentiometer example, however a sealed detector at the float pivot determines the angular position of a magnet pair at the pivot end of the float arm.
Diagram showing the construction of a typical leaded hub joint. Cast iron piping was traditionally made with one "spigot" end (plain, which was cut to length as needed) and one "socket" or "hub" end (cup-shaped). The larger-diameter hub was also called a "bell" because of its shape.
Fuel-oil management system (FOMS) is a recent development in the field of electric power by which the fuel oil level in any power plant or any industry can be monitored and controlled using programmable logic controller and supervisory control and data acquisition.
The fuel level indication system in the simplest form is a transparent window on the tank side and in its usual application a float-driven potentiometer installed in the tank. After the TWA Flight 800 disaster, a revision was made to aircraft fuel systems to address the potential explosion hazard of electrical components located in the fuel tank.
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A full authority digital engine (or electronics) control (FADEC) is a system consisting of a digital computer, called an "electronic engine controller" (EEC) or "engine control unit" (ECU), and its related accessories that control all aspects of aircraft engine performance.
A water in fuel sensor, or WiF sensor, is an electronic sensor used to indicate the presence of water in fuel.It is installed in a fuel filter.When the water level in the water separator reaches the warning level, the WiF sends an electrical signal to the ECU or to dashboard (lamp). [1]