Instrumentation Laboratory Equipment

Computerized Pressure Control Trainer



The ”LabTek” Trainer provides a comprehensive experimental introduction to the fundamentals of control engineering using an example of pressure control.

The air pressure control system is a 2nd order system. It comprises two in-line pressure tanks interconnected by a flow control valve. An additional valve on the second tank makes air tapping possible and so can be used to simulate a disturbance variable. A pressure sensor measures 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 standardized 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.

Computerized Pressure Control Trainer


  • Experimental introduction to control engineering using an example of pressure control
  • Construction of the system with components commonly used in industry
  • Digital controller with freely selectable parameters: P, I, D and all combinations



2 pressure tanks

  • Capacity: each 10L
  • Pressure: 10bar
  • Operating pressure: 6bar

Pressure sensor: 0…6bar
Pneumatically operated control valve

  • Connecting flanges: DN15
  • Kvs: 0,1m3/h
  • Reference variable: 4…20mA
  • Stroke: 15mm
  • Characteristic curve equal-percentage

Line recorder

  • 2x 4…20mA
  • Feed rate 0…7200mm/h, stepped


  • Process variables X, Y as analogue signals: 4…20mA
  • Power required for operation

230V, 50Hz, 1 phase
230V, 60Hz, 1 phase



  • LxWxH: 1000x700x1750mm
  • Weight: approx. 110kg

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