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Products  |  Process Control and Process Engineering  |  Process Control Trainers  |  RT 682
RT 682 Stirred Tank Test Stand Show data sheet (pdf file) Print page
Technical Description
This demanding test stand is used to perform experiments on a multivariable system often found in practice. In this particular example, the interacting variables temperature and level are to be controlled in a stirred tank. After the heated product leaves the stirred tank, heat is transferred to the feed by a heat exchanger. A pneumatic control valve controls the tank level via product discharge. The double-walled tank is electrically heated. The system has a closed water circuit.
The test stand contains high quality instrumentation. The controllers have a Profibus DP interface which allows the test stand to be monitored with optional process control software RT 650.60. This software can also be used to record the process variables and to tune controller parameters via PC.
Learning Objectives / Experiments
- Demonstrating a multivariable system
- Determining system parameters
- Realising non-interacting controlled variables
- Comparing the different controller types: P, PI and
  PID and their suitability 
- Recording step responses
- Investigating control quality
- Investigating stability
Features
* Multivariable control system
* Strategies to realise non-interacting systems
* Controller layout and stability
* High-quality equipment with industrial components
* Profibus DP
Available accessories
RT 650.60 -- Process Control Software for RT 681 - RT 682 Series
Alternative products
RT 580 -- Industrial Process Control Rig
RT 681 -- Test Stand for Level / Pressure Control
Specification
[1] Multivariable control system in a mobile steel rack
[2] Combined liquid level/temperature control system
[3] Double-walled tank with electric heating and agitator, 20ltr
[4] 2 digital industrial controllers, can be configured as P PI, PD, PID
[5] Profibus DP interface
[6] Pneumatic control valve DN20, PN16
[7] Capacitive level sensor 0...500mm
[8] PT100 Temperature sensors
[9] Standardized signal 0(4)...20mA
[10] Centrifugal pumps 30m, 10ltr/min
[11] Stainless steel plate heat exchange
[12] Rotameter for feed
Technical Data
Level sensor, capacitive: 0...500mm
Temperature sensor: 0...100°C
Stirred tank: 20ltr
Centrifugal pumps: max. head 30m, max. flow rate 10ltr/min
Supply tank: 70ltr
Control valve: pneumatic, DN20, PN16
Digital controller: Xp: 0...999.9%, Tv: 0...1200s, Tn: 0...3600s
Dimensions and Weight
l x w x h : 1150 x 500 x 1920 mm
Weight : approx. 200 kg
Connections
230V, 50Hz, 1 phase
Scope of Delivery
1 basic unit, 1 instruction manual
Order Details
080.68200  RT 682  Stirred Tank Test Stand
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© 2005 G.U.N.T. Gerätebau GmbH