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fuel level gauge float
The fuel level float floats on the oil surface by buoyancy. The position of the float is the position of the liquid surface. Knowing the height of the liquid surface, the volume of oil in the oil storage tank can be known through the shape of the oil tank. In other words, it is a sliding rheostat. The height of the oil level is different, and the height of the float is also different. The resistance value of the sliding rheostat connected to the float is different. The computer gives a voltage to the sliding rheostat, and after returning to the pressure drop, the computer estimates the oil quantity and displays the data. to the car dashboard. The float in the actual fuel tank is a sliding variable resistor, which floats on the float to change the resistance in the circuit, and then reflects it through the oil gauge pointer on the instrument.The car fuel level sensor can float on the surface of the fuel layer. Using the lever principle, the other end of the float is a potentiometer. The amount of fuel determines the level of the float. The potentiometer at the other end will reach different potentials with the fuel level. displayed above.
The principle of automobile fuel level sensor is wire wound resistance, the resistivity is determined by the material of the resistance wire, and the resistance value is determined by the number of turns of the material resistivity c fuel. Therefore, the stable performance of the wire wound resistor is the preferred factor for the long-term use of the automobile fuel sensor. The fuel quantity sensor adopts small wire diameter, high resistance value, and densely arranged wire-wound resistors, which have the characteristics of stable performance, reliable structure and high resolution. The sensing part of the fuel level transmitter (sensor) is a coaxial container. When the fuel enters the container, it causes a change in the capacitance between the sensor housing and the sensing electrode. This change is converted by the circuit and accurately linearized. And temperature compensation, output analog signal or data communication for display instrument or other equipment.
Capacitive fuel level sensor features:
1. Independence: The fuel consumption value is obtained directly by measuring the fuel volume of the fuel tank, without any effect or influence on the fuel circuit system/pipeline.
2. Uniqueness: It has the function of self-truncation of the range, the user can re-calibrate by pressing the button, and the digital output can also be equipped with debugging software.
3. Stability: No mechanical moving parts, mature and stable circuit structure and high-quality components will enable the sensor to be used continuously for several years without replacement.
4. Safety: directly replace the original car fuel gauge, no need to re-install the capacitive sensor on the fuel tank, the electronic cabin adopts explosion-proof design and has passed the explosion-proof certification.
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