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5v fuel level gauge 40-250 ohm
5v fuel level gauge 40-250 ohm:The fuel gauge mainly consists of two parts: a transmitter that measures the fuel level in the fuel tank and a fuel gauge that displays the measurement to the driver.
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Size |
2-1/16" 52mm |
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sensor signals |
0~5V/0.5~4.5V |
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programmable |
0-190 Ω/240-33Ω |
The fuel gauge is also a very simple device. The current flowing from the transmitter passes through a resistor that may or may not be surrounding a bimetal. The bimetal is connected to the pointer of the fuel gauge via a connecting rod.
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As the resistance increases, less current flows through the heating coil, so the bimetal cools down. As the sheet cools, the sheet straightens, allowing the fuel gauge to go from full to empty.
1. Don't wait for the warning light to come on before refueling
Because the gasoline pump is in the fuel tank and relies on gasoline to dissipate heat and lubricate it, too little oil will not be conducive to the normal operation of the oil pump and reduce its service life.
2. It is not recommended to fill up when refueling
Because gasoline expands with heat and volatilizes into gasoline vapor at high summer temperatures, space is needed to accommodate it. If there is no room for overfilling, gasoline vapor or even liquid gasoline will enter the carbon canister for storage. When the carbon canister is full, it escapes into the air, which is not only wasteful but also pollutes the environment.
3 Indication deviation
If you change the battery or gasoline filter every day, or even park the vehicle overnight, when you start the vehicle again, you may notice that the pointer of the fuel gauge is lower than the previous display position, which is considered a malfunction. In fact, it is a normal phenomenon, because when the fuel pump is working, the fuel tank is under negative pressure, the corresponding fuel tank volume is reduced, and the oil level is high. The pressure is released and the oil level drops, so it is a normal phenomenon to have a display deviation. But the deviation is generally not more than one pointer width.
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