PH Value Control Trainer

PH Value 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 standardized current signal. A rotameter indicates the flow. 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. Trainer for control engineering experiments pH value control process, equipped with standard industrial components Neutralization of a caustic solution with an acid 2 pH value sensors in transparent measuring tanks with overflow Digital controller, parameterizable as a P, PI or PID controller Product tank and 2 chemicals tanks 2 metering pumps: adjustable manually or via controller Water connection with control valve and rotameter Corrosion-resistant piping system Hand-held ph-meter for product control 2-channel line recorder Process variables X and Y accessible as analogue signals via lab jacks Including PC1 Computer-System with 21" TFT-Monitor Win 10 engl. Technical Data: Product tank: 20L Chemicals tank: 2x 5L Metering pumps Flow rate: each 2,1L/h Head: each 160m pH value sensor Filled with solid electrolyte With glass shaft and PTFE diaphragm Line recorder 2x 4...20mA Feed rate 0...7200mm/h, stepped Controller Process variables X, Y as analogue signals: 4...20mA Measuring ranges Ph value: 1...12 Temperature: 0...80°C 230V, 50Hz, 1 phase.

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