Magnetostrictive probe adopts advanced magnetostrictive technology and digital electronic technology design, the main processor (CPU) uses high frequency arithmetic processor, circuit design uses highprecision instrument to amplify circuit, real digital communications, can accurately measure the oil level, water level, lpg gas level,density and multi-temperature of the tank. It has high precision of measurement parameters, complete data, strong anti-interference ability, strong environmental adaptability, reliable data security, advanced algorithm and so on.