A high-precision, multi-purpose digital compensation water level sensor. The sensor has a decompression device at the end of the reference tube. The pressure relief device is wrapped in the cable to prevent condensation during atmospheric pressure compensation. The sensor has multiple measurement ranges from 100cm-30m, is very accurate, and has long-term superior stability. Power supply is provided by RTU. Measuring principle The LVE1 digitally compensated liquid level sensor is manufactured in Switzerland and has first-class quality, suitable for a variety of applications. The end of the tube is equipped with a pressure relief device containing a quartz block (which can be embedded in the cable as a whole), which can effectively prevent pressure compensation