Control Of Four Variables From Process Engineering

control Of Four Variables From Process Engineering The facilitates practical learning in the control of four controlled variables which are commonplace in process engineering. A circuit with a graduated transparent tank is provided for the control of flow rate, level and pressure. Two actuator possibilities are included for use, namely, a variable-speed pump and a pneumatic control valve. A disturbance variable can be generated by a valve in the tank outlet for level and pressure control. A valve at the tank head also permits investigation of level control with and without counter pressure. A heating circuit with a heater, heat exchanger and pump is provided for temperature control. The temperature can be controlled using the heater as the actuator, or by way of the flow of cooling water through the heat exchanger. Control of level, flow rate, pressure, temperature and cascade control Circuit with collecting tank, graduated tank, pneumatic control valve and multistage variable-speed centrifugal pump Heating circuit with heater, pump, expansion vessel and heat exchanger Heater, pneumatic control valve and multistage variable-speed centrifugal pump as actuators Sensors for measurement of the controlled variables; level, flow rate, pressure and temperature 1 flow meter, 2 manometers and 4 thermometers for direct display Parameterisable controller with 4 selectable control loops Three-channel line recorder Process control software via PCIe under Windows 10 including PC1 Computer-System with 21" TFT-Monitor Win 10 engl. Technical Data: Tanks Graduated tank: 6l Collecting tank: 90l Multistage centrifugal pump Flow rate: 75l/min Head: 59m Heating circuit pump Flow rate: 50l/min Head: 3,5m Heater power output: 2kW Controller parameterisable as P, PI or PID controller Switching controller Measuring ranges Level: 0...700mm Flow rate: 0...4000l/h Pressure: 1x 0...6bar, 1x 0...10bar Temperature: 1x 0...60°C, 3x 0...120°C 230V, 50Hz, 1 phase

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