The advantages of LVDT mainly include: non-contact principle, good wear resistance, high resolution, good repeatability, no sliding contact and long service life; Fast response speed; High linearity; Good repeatability; Wide range coverage; Low fault/low power consumption/diversity of input and output; Good dynamic characteristics, can be used for high-speed online detection, automatic measurement and automatic control; Can be used in harsh environments such as humidity and dust; Can work under special conditions, such as high pressure resistance, high temperature resistance, radiation resistance, full-tight soil seal working underwater; It can withstand impact up to 150g/11ms, vibration frequency 2KHZ acceleration 20 g; Small size, low price and high performance-price ratio.