The Trainer provides a comprehensive experimental introduction to the fundamentals of control engineering using an example of temperature control.
A circulating pump delivers water within a closed circuit. A hand-operated valve can adjust the flow rate of water. The loop also contains a screw-in heater, a heat exchanger with fan, and three integrated thermocouples for temperature measurement. Dead times can be represented by the use of different lengths of process delay. A thyristor power controller is used as the actuator. The controller used is a state-of-the-art digital industrial controller. It can be configured as a continuous or a switching device, and can activate the heater via the actuator and / or the fan. 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. Process control software is optionally available.
FEATURES:
•    Experimental introduction to control engineering using an example of temperature control
•    Construction of the system with components commonly used in industry
•    Digital controller with freely selectable parameters: P, I, D and all combinations
 
SPECIFICATION:
Pump, 3-stage
•    Power consumption: 70W
•    Flow rate: 3,6m3/h
•    Head: 4m
Screw-in heater: 2kW
Heat exchanger: approx. surface area 2,8m2
Fan
•    Power output: 250W
•    Flow rate: 780m3/h
•    Differential pressure: 430Pa
•    Speed: 2880min-1
Thermocouple: type J: 0…200°C
Thyristor power controller max. Load current: 25A
Line recorder
•    1x 4…20mA, 1x 0…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