Magnetostrictive Position Sensor, is a kind of displacement detection devices with special advantages which based on the ferromagnetic materials magnetostrictive effect . It has many special advantages such as high reliability, high resolution, non-contact measurement, oil-resistance and dirt-resistance. In harsh industrial environment, it can make real-time measurements of the displacement (position), speed, accuracy of all kinds of moving parts.It's an important component for precise operation and control,and it can greatly improve the precision and efficiency of the whole system.It is applicable to the trip or position detection of any machinery  with linear motion trajectory, and one of the most typical applications is the precision servo feedback control of hydraulic system.