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Products  |  Process Engineering  |  Simple Process Engineering Control Systems  |  RT 644
RT 644 Temperature Control Demonstration Unit Show data sheet (pdf file) Print page
Technical Description

  This experimental unit provides a comprehensive experimental introduction to the fundamentals of control engineering using an example of temperature control.

  All components are clearly laid out on a vertical front panel. The large-format process schematic provides an aid to understanding. The system comprises two water circuits. In the secondary circuit fresh water is heated up by a heat exchanger. The temperature is measured by a temperature sensor at the fresh water outlet. The outlet temperature of the fresh water is controlled by the flow rate of warm water in the primary circuit. The primary circuit comprises an electrically heated tank, a pump and an electromagnetic proportional valve as the actuator. Both circuits include rotameters. The controller used is a state-of-the-art digital industrial controller. A ball valve in the secondary circuit enables defined disturbance variables to be generated. The controlled variable X and the manipulating variable Y can be tapped as analogue signals at lab jacks. This enables external recording equipment, such as a plotter or an oscilloscope, to be connected.

  An instrumentation and control software (RT 650.40) with interface module (USB) is available as an accessory. This enables the key process variables to be represented, and control functions executed.


  The well-structured instructional material sets out the fundamentals and provides a step-by-step guide through the experiments.


Learning Objectives / Experiments

- fundamentals of control engineering
- latest industrial control engineering

  controllers, transducers, actuators
- operation and parameter setting of a multi-

  functional state-of-the-art digital controller: e.g.

  parameter setting as P, PI and PID controller
- investigation of disturbance and control response
- influence of different controller parameters on

  stability and control quality
- investigation of the properties of the open and

  closed control loops
- processing of process variables using external

  equipment, e.g. plotter or oscilloscope
- together with accessory RT 650.40:

  familiarisation with and use of I&C software


* Experimental introduction to control engineering

  using an example of temperature control1
* Construction of the system with components

  commonly used in industry1
* Digital controller with freely selectable parameters:

  P, I, D and all combinations1
* Optional I&C software RT 650.40 via USB

Available accessories
RT 650.40 -- I&C Software for RT 614 - RT 674 Series
Alternative products
RT 040 -- Training System: Temperature Control, HSI
RT 450.04 -- Controlled System Module: Temperature
RT 542 -- Temperature Control Trainer
RT 614 -- Level Control Demonstration Unit
RT 624 -- Flow Control Demonstration Unit
RT 634 -- Pressure Control Demonstration Unit
RT 674 -- Flow / Level Control Demonstration Unit
RT 614 - RT 674 Introduction to Industrial Process Control

[1] experimental unit for control engineering experiments

[2] temperature control with plate heat exchanger and 2 water circuits
[3] primary circuit with electrically heated tank, pump control valve, rotameter
[4] secondary circuit with fresh water connection, temperature transducer, rotameter
[5] ball valve to generate disturbance variables in fresh water circuit
[6] plate heat exchanger, 30 plates
[7] control valve: electromagnetic proportional valve
[8] digital industrial controller, freely parameterisable
[9] large process schematic on front panel
[10] process variables X and Y accessible as analogue signals via lab jacks


Technical Data

- stainless steel
- capacity: 15L
- power output: 2kW
- thermostat: 20...80C
Pump, 3-stage
- power consumption: 90W
- max. flow rate: 70L/min
- max. head: 5,5m

Temperature sensor: Pt100: -50...400C
2x dial-gauge thermometers (bimetal type): 0...80C
2x rotameters: 30...320L/h
Electromagnetic proportional valve: Kvs: 0,8m/h
Digital controller, can be parameterised as P, PI or PID controller
Process variables as analogue signals: 0...10V
Connection of external recording devices (e.g. oscilloscope, line recorder) via lab jacks


Dimensions and Weight
LxWxH: 1.000x500x1.050mm
Weight: approx. 67kg
Required for Operation
230V, 50/60Hz, 1 phase
Fresh water connection approx. 100L/h
Scope of Delivery

1 experimental unit

1 set of laboratory cables

1 set of instructional material

Order Details

080.64400  RT 644  Temperature Control

                                 Demonstration Unit

© 2005 G.U.N.T. Gerätebau GmbH