0-5v 100m Well Water Level Sensor is a standard and the most economic transmitter, using a high-performance piezo-restive pressure sensor as sensing elements. It measures liquid static pressure accurately which is positively proportional to liquid depth, transmitting pressure signal into standard current/voltage output signal by the amplifier circuit board. It has high accuracy, compact size and easy operation characteristics for it can be submersible into the liquid to measure level from transmitter bottom to liquid surface. It is widely used in petroleum,chemistry-industry, power station, city water supply, and drainage and hydrology.