The magnetostrictive liquid level gauge consists of three parts: the detection rod, the circuit unit and the float. During measurement, the circuit unit generates a current pulse, which propagates downward along the magnetostrictive line and generates a ring-shaped magnetic field. There is a float outside the detection rod, and the float moves up and down along the detection rod as the liquid level changes. Since the float is equipped with a set of permanent magnets, the float generates a magnetic field at the same time. When the current magnetic field meets the float magnetic field, a "twist" pulse, or "return" pulse is produced. The time difference between the "return" pulse and the current pulse is converted into a pulse signal, thereby calculating the actual position of the float and measuring the liquid level.

The leakage of gasoline into the soil is a more serious problem than the volatilization of gasoline into the air. In developed countries, this is a must-measure indicator and is also the world's top technology. Panwei Technology's magnetostrictive liquid level meter can not only measure the liquid level, temperature and other parameters of the oil tank, but also measure the leakage of the oil tank. The leakage detection accuracy reaches 0.375 liters/hour, which can meet the needs of different users and achieve a high performance-price ratio.