Description
The Level Process Training System is a compact and mobile unit for a wide range of experiments in fl ow control. It gives students a greater understanding of the stability of simple control systems. The self-contained unit can perform many experiments. By connecting this to other products in the range further experiments are possible. For cascade control of flow and level, it can link to the optional Flow Process Training System. For distributed control, it can connect to the optional Computer Control System. The main parts of the Level Process Training system are: • Industrial controller with auto-tune feature • Two-channel chart recorder • Current-to-pressure converter • Diff erential pressure transmitter • Transparent vessel • Pneumatic control valve • Three-speed pump • Reservoir To carry out experiments, students fi ll the reservoir with clean water and prime the system. They then set the controller to regulate the fl ow of water using a pneumatic valve. This alters the water level in the transparent vessel. The diff erential pressure transmitter connected to the vessel gives feedback to the controller. For a realistic experience, the equipment has industrial standard instrumentation and parts. The apparatus includes two gate valves. One valve controls the fl ow at the output (drain) and the other acts as a fl ow-bypass valve. A chart recorder shows and logs the changes of the process variable (level) and the controller output.
Learning Outcomes
- Proportional, integral and derivative control
- Setting up and demonstrating automatic control
- The principles of loop control and the calibration and tuning of controllers, transmitters, converters and valves
- Wet and dry leg operation of a differential pressure transmitter
- Operation of a level control system
- Cascade control of level and fl ow (when used with the Flow Process Training System)
- Distributed control
Specifications
- ATICO is committed to a programmed of continuous improvement; hence we reserve the right to alter the design and product specification without prior notice.
- Dimensions and Weights:
- Nett: 700 mm x 800 mm x 1750 and 120 kg
- Packed: Approximately 1 m3 and 150 kg
Operating Conditions
- Operating environment: Laboratory
- Storage temperature range: –25°C to +55°C (when packed for transport)
- Operating temperature range: +5°C to +40°C
- Operating relative humidity range: 80% at temperatures < 31°C decreasing linearly to 50% at 40°C
