How to install the automobile oil level sensor?

The installation of the automobile oil level sensor is as follows: first, open the oil filler of the oil tank, observe or probe the approximate position between the sensor and the partition board in the oil tank with wooden sticks and branches, and after determining the position, drill a hole in the oil tank with a drill bit, then put the sensor into the oil tank from the oil filler, clamp the wire harness end of the sensor with iron wire, coat oil seal resistant glue around the hole to prevent oil leakage, screw on the big nut, then connect the lead wire, apply sealant, and tighten the cap. Automobile oil level sensor is also called oil level sensor or water level sensor. Its working principle is to use the magnetic field generated by ferrite magnet to control the on-off of reed switch contact, and to convert the change of measured liquid level into electrical signal for output and connect it with secondary instrument, so as to detect the liquid level height.

There are two kinds of oil level sensors: one is to use a sliding potentiometer as the basic detection element, driven by a float, and then use an ohmmeter to detect its resistance value, so as to achieve the purpose of displaying the oil level. However, when oil dirt covers the potentiometer, its resistance value will change, resulting in too large an error or even inability to use, making this kind of fuel tank sensor a vulnerable part with a short life. The other is to use the inductance coil as the basic detection element. It uses the float to drive the inductance coil to change the oscillation frequency of the oscillation circuit, and then determines the oil level by detecting its frequency with a frequency meter.

Most automobile fuel level sensors are basically installed in the automobile fuel tank. If the oil level sensor fails, the oil will be insufficient or dirty. Sensors include air flow sensor, air temperature sensor, idle speed sensor, throttle position sensor, oil temperature sensor, oil pressure sensor, knock sensor, camshaft position sensor, crankshaft position sensor, water temperature sensor, oxygen sensor and so on.

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