• Fundamentals of control engineering based on the example of a pressure  control system with Pt1 behaviour
  • Open loop control response
  • Effects of different controller parameters and methods on the response of  the closed loop system
  • Recording of step responses (Reference variable / Disturbance variable)
  • Controller optimization

Pressure control training system offers to learn the basic fundamentals control engineering. The experimental set-up is mounted on a housing which accommodates all the electronics. The pressure tank is charged with compressed air by a diaphragm gas pump. The advantage of the dial-gauge manometer is that the pressure in the tank can be observed directly at any time. The pressure is measured using a pressure sensor. The sensor output signal is sent to the software controller. The output signal from the controller influences the speed of the diaphragm gas pump and hence the flow rate. An air consumer is simulated by way of a flow control valve. A solenoid valve through which air can escape can be activated by the           software to investigate the influence of disturbance variables.

The powerful state-of-the-art software is an integral part of the training system, embodying the principle of hardware/software integration (HSI). It enables the experiments to be conducted and evaluated in a user  friendly manner. The software has network capability. The link between the experimental unit and the PC is made via a USB port.


  • Experimental unit for control engineering experiments
  • Pressure control in a tank
  • Speed controlled diaphragm gas pump
  • Electronic pressure sensor
  • Solenoid valve to generate disturbance variables
  • Process schematic on front panel
  • DAQ with simulation software via USB under Windows Vista or Windows 7

Technical Data

  • Diaphragm gas pump:
  • Max. flow rate: 3L/min
  • max. positive pressure: 1bar
  • Max. negative pressure: 250mbar abs.
  • Pressure tank:
  • Capacity: 400mL
  • Operating pressure: 1bar
  • Max. pressure: 2bar
  • Pressure control range: 0…1bar
  • Solenoid valve: Kvs: 0.11m³/h
  • Pressure transducer: 0…2bar
  • Software controller configurable as P, PI, PID and switching controller


  • Process schematic with controller type selection (manual, continuous controller, two or three-point controller, programmer)
  • Disturbance variable input

Required for Operation

  • 230V, 50/60Hz, 1 phase or 120V, 60Hz/CSA, 1 phase