Pressure Control Trainer- Engineering Lab Training Systems

Technical Description This teaching and training system provides a comprehensive experimental introduction to the fundamentals of process control using an example of pressure control. The air pressure control system is a 2nd order system. It comprises two in-line pressure vessels interconnected by a restrictor valve. An additional valve on the second tank makes air tapping possible and so can be used to simulate a disturbance variable. A pressure transducer mesaures the pressure in the second vessel. The controller used is a state-of-the-art digital industrial controller. The actuator in the loop is a pneumatically operated control valve with a standardised current signal input.  The controlled variable X and the manipulating variable Y are plotted directly on an integrated 2-channel line recorder. Alternatively, the variables can be tapped as analogue signals at lab jacks on the switch cabinet. This enables external recording equipment, such as an oscilloscope or a flatbed plotter, to be connected.   A process control software is optionally available. The software permits the construction of a complete networked system comprising multiple trainers from the series. The key process variables can also be represented, and control functions executed. The well-structured instructional material outlines the technological fundamentals and provides a step-by-step guide through the experiments.