The tank is a sealed space and we can’t see the liquid inside with eyes or simple measurement. At this time we need a professionalinstrument to measure the liquid inside the tank. Secondly, there are a number of mobile tanks which need real-time monitoring of oilcontent in the tank, and the levelof the instrument is very good to play a role in supervision. With our tank gauge system, we can monitor the oilof the tank through the ultrasonic transmission data and the data willbe transmitted to the database. People can know about the information of the oilthrough PC or mobile terminal, which can manage and monitor the vehicle, preventing oiltheft and oilleakage.