Temperature Control Trainer

Temperature Control Trainer

Temperature Control Trainer

Description

This teaching and training system provides a comprehensive experimental introduction to the fundamentals of process control using an example of temperature control. 

A circulating pump transfers water within a closed circuit. The flow of water can be regulated by a hand-operated valve. 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.  

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.

Specification: 

Temperature Control Trainer

• Trainer for control engineering experiments
• Temperature control process, equipped with standard industrial components
• Water circuit with pump, heater and 2 different lengths of process delay
• Screw-in heater with dry-running protection and temperature limiter Air/water heat exchanger with fan
• Temperature measurement with thermocouples at multiple points
• Generation of disturbance variables by ball valve with scale in water circuit
• Thyristor power controller as actuator
• Digital controller, configurable as switching or continuous controller
• 2-channel line recorder
• Process variables X and Y accessible as analogue signals via lab jacks 

Technical Data

Pump, 3-stage

• Max. power consumption: 70W
• Max. flow rate: 3,6m³/h
• Max. head: 4m
• Screw-in heater: 2kW
• Heat exchanger: approx. surface area 2,8m²

Fan

• Power output: 250W
• Max. flow rate: 780m³/h
• Max. 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…7200 mm/h, stepped