SCADA is an acronym of Supervisory Control And Data Acquisition. It consists of a communication server, a server administrator/ configuration module and monitors or programs to display the states. - It is a control software application that communicates with the field devices, and controls automatically the process from a PC screen. - It provides process information to different users: operators, quality control supervisor, supervision, maintenance, etc. - The Interface System between users and plant based on control panels full of luminous indicators, measure instruments and push-buttons; are replaced by digital systems that introduce the panel in the PC screen. - The direct control is done by embedded electronic controls that are connected with a PC which realizes the functions of: dialogue with the operator, information treatment and control, using SCADA. Main Functions: - Data Acquisition: to collect, process and store the received information. - Supervision: to observe from a monitor the evaluation of the control variables. - Control: to modify the process evolution, acting well on the basic autonomous regulators (instructions, alarms, menues, etc.) and well directly on the process through the connected exits. Pressure/Temperature Controls.