The above image shows the main controller and live readings in the production office. The entire system can be controlled from this, or the controllers on the ground floor. The controller, in theory, could be anywhere within a W.A.N due to the connectivity all being over Modbus TCP.

The image below shows a HMI that was installed so operators on the mezanine could see the tank contents real time.

The images below show the controllers for starting / stopping production on the ground floor