What is Immersion Water Pressure Level Sensor?

In my opinion,the immersion water pressure level sensor is a pressure sensor to measure the water level. It is based on the principle that the measured hydrostatic pressure is proportional to the height of the liquid. It adopts advanced isolated diffused silicon sensitive element or ceramic capacitive pressure sensitive sensor to convert the hydrostatic pressure into electrical signal, and then through temperature compensation and linear correction, convert it into standard electrical signal.

That's my understanding, how do you guys understand that? thanks.