TVET Computerized Pressure Control Trainer

TVET Computerized Pressure Control Trainer

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The 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.

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

SPECIFICATION:
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

Controller :
Process variables X, Y as analogue signals: 4…20mA
Power required for operation
230V, 50Hz, 1 phase
230V, 60Hz, 1 phase