Computerized Level Control Trainer

Measurement and Instrumentation Lab Equipment

COMPUTERIZED LEVEL CONTROL TRAINER

MODEL NO-IM-010

DESCRIPTION

The ”LabTek” 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