A system and method for the secure transfer of data between a workstation connected to a private network and a remote computer connected to an unsecured network. In accordance with some embodiments, the semiconductor structure includes a substrate, one or more fins each including a first semiconductor layer formed over the substrate, an oxide layer formed wrapping over an upper portion of each of the one or more fins, and a gate stack including a high-K dielectric layer and a metal gate electrode formed wrapping over the oxide layer. A microcontroller is operatively coupled to the valve, the output flow transducer, the output pressure transducer, and the fluid depth transducer.