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RT 512: Level Control Trainer

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Level Control Trainer

Level Control Trainer Level Control Trainer Level Control Trainer

Product Details


Technical Description 
 
This teaching and training system provides a comprehensive experimental introduction to the fundamentals of process control using an example of level control.
A pump transfers water from a storage tank to the transparent process tank. The liquid level is measured by an electronic pressure transducer installed at the base of the process tank. The controller used is a state-of-the-art digital industrial controller. The actuator in the control loop is a pneumatically operated control valve with an electro-pneumatic positioner. A ball valve in the outlet line enables defined disturbance variables to be generated. 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 (RT 650.50) is optionally available. The software permits the construction of a complete networked system comprising multiple trainers from the RT 512 - RT 552 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.
 
Learning Objectives / Experiments

- Introduction to the fundamentals of process control
- Familiarisation with real industrial process control
  components: controllers, transducers, actuators
- Operation and parameter setting of the local
  industrial controller 
  + manually (by keyboard)
  + using the RT 650.50 process control software
- Disturbance feedforward control
- Controller optimisation
- Investigation of the properties of the open and
  closed control loops
- Processing of process variables using external
  equipment, e.g. oscilloscope or plotter
- In conjunction with accessory RT 650.50 and other
  trainers (RT 522 - RT 552): Familiarisation with and
  use of process control software (SCADA)
 
Features
 
* Experimental introduction to process control using
  an example of level control1
* Construction of the system with components
  commonly used in industry1 
* Digital controller with freely selectable parameters:
   P, I, D and all combinations1
* Integrated 2-channel line recorder1
* Optional process control software RT 650.50
  available1
* Construction of a complete networked system via
  Profibus interface possible

Specification

[1] Trainer for process control experiments
[2] Level control process, equipped with standard industrial components
[3] Level measurement by pressure transducer
[4] Generation of disturbance variables by ball valve with scale in outlet
[5] Transparent process tank with overflow and graduated scale
[6] Pneumatically operated control valve with electro-pneumatic positioner
[7] Digital controller, configurable as a P, PI or PID controller
[8] 2-channel line recorder
[9] Base construction: solid steel frame with castors
[10] Process variables X and Y accessible as analogue signals via lab jacks
[11] 230V, 50/60Hz, 1 phase or 120V, 60Hz, 1 phase; compressed air 3...8bar

Technical Data
Storage tank: 30L
Centrifugal pump:
- power consumption: 550W
- max. flow rate: 230L/min
- max. head: 11m
- speed: 2850rpm
Measuring tank:
- max. 7L
- level: 0...0.6m
Pressure transducer: 0...100mbar
pneumatically operated control valve DN 20:
- kvs: 4.0m³/h
- reference variable: 4...20mA
- nominal stroke: 15mm
- characteristic curve equal-percentage
Line recorder:
- 2x 4...20mA
- feed rate 0...3600mm/h, stepped
Controller: external reference variable input: 4...20mA
Process variables as analogue signals: 4...20mA

Dimensions and Weight
l x w x h : 1000 x 700 x 1750 mm
Weight : approx. 110 kg

Connections
230V, 50/60Hz, 1 phase or 120V, 60Hz, 1 phase
Compressed air: 3...8bar
 
Scope of Delivery
1 level control trainer
1 set of instructional material

Order Details
080.51200  RT 512  Level Control Trainer
 

Available accessories
 
RT 650.12 -- PC-Interface Card Profibus DP
RT 650.50 -- Process Control Software for RT 512 - RT 552 Series
 
Alternative products
 
RT 450.01 -- Controlled System Module: Level
RT 522 -- Flow Control Trainer
RT 532 -- Pressure Control Trainer
RT 542 -- Temperature Control Trainer
RT 552 -- pH-Value Control Trainer
RT 614 -- Level Control Demonstration Unit
RT 674 -- Flow / Level Control Demonstration Unit
 
Overview
 
RT 512 - RT 552 Process Control Training Rigs with Process Control System

SELKA GmbH, Hamburg
Grindelallee 188, 20144 Hamburg / Germany
Tel.: + 49 (0) 40 343453 |  Fax: +49 (0) 40 63657075
E-Mail:
info@selkagmbh.com   |  Internet: http://www.selkagmbh.com

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