Multi-Functional Automatic Tank Gauge is a high-precision displacement measurement sensor developed using the magnetostrictive principle. This gauge can simultaneously measure the liquid level, interface, and temperature of a liquid storage tank. It offers high measurement accuracy, stability, reliability, a long lifespan, a compact design, and strong environmental adaptability. The installation at the top of the oil tank eliminates the need for tank cleaning, making it safe, convenient, and quick. It is widely used in the monitoring and measurement of liquid levels in tanks, pools, and troughs in industries such as petroleum, chemical, pharmaceutical, and food.