Related products

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  Process Control Eengineering

  Test Stand for Level Pressure Control

  This high quality test stand enables to perform complex experiments on a multivariable system often used in practice. In this particular case, a vacuum degassing model is used as an example of an interacting two-variable control system. Vacuum and level are the two variables to be controlled in a process tank. Pressure and level are interdependent variables. The system has a closed water circuit. The vacuum is generated by a waterjet pump with its own water circuit. Two pneumatic control valves control vacuum generation and discharge from the tank. The test stand contains high quality instrumentation. The controllers have a Profibus DP interface. This interface allows the test stand to be monitored by optional process control software . This software can also be used to record process variables and to tune controller parameters via PC.

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  Process Control Eengineering

  Training System Temperature Control

  This compact teaching / training unit offers every opportunity to learn the fundamentals of process control through experimentation on a temperature control system. The experimentation set-up is mounted on a solid housing which accommodates all the electronics. A metal bar, which is thermally insulated with cladding, is heated or cooled at one end by a Peltier element. Three temperature transducers along the axis of the bar allow the variation in temperature along the length of the bar, and hence the associated thermal lags, to be obtained for differing operating conditions. A dial-gauge thermometer offers the advantage that the temperature can be read off directly at any time. The temperature is measured using a thermal resistor (PTC). The transducer output signal is sent to the software controller. The output signal from the controller influences the operating voltage of the Peltier element and hence the heating power. A fan that dissipates part of the heating energy can be activated by the software to investigate the influence of disturbance variables. The powerful state-of-the-art software is an integral part of the training system, embodying the principle of hardware/software integration (HSI). It enables the experiments to be conducted and evaluated in a user-friendly manner. The software has network capability. The link between the practice system and the PC is made via a USB port. The clearly structured instructional material sets out the technological fundamentals and provides a step-by-step guide through the experiments.

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  Process Control Eengineering

  Level Control Demonstration Unit

  This training system provides a comprehensive experimental introduction to the fundamentals of process control using an example of level control. All components are clearly laid out on a vertical panel. The large-format process diagram provides an aid to understanding. A pump transfers water from a storage tank into the transparent process tank. The 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 an electromagnetic proportional valve. A ball valve in the outlet 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 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 outlines the technological fundamentals and provides a step-by-step guide through the experiments.

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  Process Control Eengineering

  Process Control Rig

  The unit is used as an introduction to the subject of control technology. Temperature, flow rate and filling level control systems are used as examples to provide clear and practical fundamental information. The experimental system is controlled from the PC screen (not included in scope of supply). The supplied process control and illustration programs make it possible to carry out the experiment as well as record measurement reports and store measured data. Important process variables are shown digitally on the unit itself. All components of the unit are clearly mounted on a metal sheet. The storage and process tanks are transparent for better viewing of the process. The unit is designed as a experimental unit for tabletop use. It requires only an electrical power connection for operation.