Computerized Level Control Trainer
Description & Specification
Technical Specifications
The Trainer provides a comprehensive experimental introduction to the fundamentals of control engineering using an example of level control.
A pump delivers water from a storage tank to the transparent level-controlled tank. The liquid level is measured by a pressure transducer installed at the base of the level-controlled tank. The controller used is a state-of-the-art digital industrial controller. The actuator in the control loop is a pneumatically operated control valve with an electro-pneumatic positioner. 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.
Process control software is optionally available.
FEATURES
- Experimental introduction to control engineering using an example of level control
- Construction of the system with components commonly used in industry
- Digital controller with freely selectable parameters: P, I, D and all combinations
- Level measurement by pressure sensor
SPECIFICATION
Storage tank: 30L
Centrifugal pump
- Power consumption: 250W
- Flow rate: 150L/min
- Head: 7m
- Speed: 2800min-1
Level-controlled tank
- 7L
- Level: 0…0,6m
Pressure sensor: 0…100mbar
Pneumatically operated control valve DN 20 - Kvs: 4,0m3/h
- Reference variable: 4…20mA
- Nominal stroke: 15mm
- Characteristic curve equal-percentage
Line recorder
- 2x 4…20mA
- Feed rate 0…7200mm/h, stepped
Controller
- Process variables X, Y as analogue signals: 4…20mA
- Power required for operation
230V, 50Hz, 1 phase
230V, 60Hz, 1 phase
DIMENSIONS AND WEIGHT
LxWxH: 1000x700x1750mm
Weight: approx. 120kg
