RT 522 Flow control trainer

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

A pump delivers water from a storage tank through a piping system. The flow rate is measured by an electromagnetic sensor, which permits further processing of the measured value by outputting a standardised current signal. A rotameter indicates the flow rate. The controller used is a state-of-the-art digital industrial controller. The actuator in the control loop is a control valve with electric motor operation. 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.

  • experimental introduction to control engineering using an example of flow control
  • construction of the system with components commonly used in industry
  • digital controller with freely selectable parameters: P, I, D and all combinations
  • integrated 2-channel line recorder
  • optional process control software RT 650.50 available
  • construction of a complete networked system via Profibus interface possible

Storage tank: 30L
Centrifugal pump

  • power consumption: 250W
  • max. flow rate: 150L/min
  • max. head: 7m
  • speed: 2800min-1

Rotameter: 0…1960L/h
Electromagnetic flow rate sensor: 0…6000L/h
Control valve with electric motor

  • Kvs: 5,7m3/h
  • stroke: 5mm
  • characteristic curve equal-percentage
  • valve-opening position sensor: 0…1000Ω

Line recorder

  • 2x 4…20mA
  • feed rate 0…7200mm/h, stepped

Controller

  • process variables X, Y as analogue signals: 4…20mA

 

230V, 50Hz, 1 phase
230V, 60Hz, 1 phase
120V, 60Hz, 1 phase
UL/CSA optional

  1. trainer for control engineering experiments
  2. flow control process, equipped with standard industrial components
  3. flow rate measurement by electromagnetic sensor
  4. rotameter for direct observation of the flow rate
  5. generation of disturbance variables by ball valve with scale in outlet line
  6. control valve with electric motor
  7. digital controller, parameterisable as a P, PI or PID controller
  8. 2-channel line recorder
  9. process variables X and Y accessible as analogue signals via lab jacks
  • fundamentals of control engineering
  • real industrial control engineering components: controllers, transducers, actuators
  • operation and parameterisation of the local industrial controller
    • manually (by keyboard)
    • using the RT 650.50 process control software
  • investigation of disturbance and control response
  • 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
  • together with accessory RT 650.50 and other trainers (RT 512, RT 532– RT 552): familiarisation with and use of process control software (SCADA)

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Product number

RT 522

RT-522

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