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A PID controller to control the output pressure of needle valve in the. When a mathematical model of a system is available, the parameters of the controller can be explicitly determined. In the past, many of these controllers were analog however, many of today's controllers use digital signals and computers. The concert of the conventional controller, IMC and MPC has been compared in which MPC controller gives a enhanced system performance in terms of settling time (ts), rise time (tr), maximum overshoot (Mp) and performance indices akin to ISE, IAE, ITAE, MSE. By using virtual PID implementation, the Hardware PID is replaced with soft PID. Currently, more than half of the controllers used in industry are PID controllers. actuated Pneumatic (Nitrogen) solenoid valves The Water-Flow Test Stand. Here 'P' stands for proportional control action, 'I' stand for integral control and 'D' stands for derivative control action. INTRODUCTION PID controller is a most widely used controller in process industry. Key words: On Off, PID, LabView, DAQ (Data Acquisition) I. The intention of this cram is to scrutinize the MPC strategy, analyse and contrast the control upshot with conventional control stratagem in maintaining a water level system. LabVIEW LabVIEW software Pressure Active PID regulation controller Manual. into pneumatic signal 3-15psig to actuate the control valve. The conventional PID controller has a shortcoming that, it makes a counteractive exploit only after the error has developed but not in progress whereas MPC endow with a corrective exploit in advance. In this cram the level process is controlled by PID controller using diverse control methods such as IMC, MPC and the result of assorted control algorithms has been compared in terms of time domain specifications like settling time (ts), rise time (tr), maximum overshoot (Mp) and performance indices like ISE, IAE, ITAE, MSE. This manuscript deals with the proposal of the controller for a Level process. (combo box and ring controls for units of measure and selected gas) used in this driver.