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CAT NO: DIDACTICNLE-Export-210025
PH - Value Control Trainer- Engineering Lab Training Systems.
Technical Description
This teaching and training system
provides a comprehensive experimental introduction to the fundamentals
of process control using an example of continuous pH control.
A
caustic solution is added to fresh water by way of a metering pump. The
pH-value of this solution is measured. The acid is then added to the
solution as a neutralising reagent by way of a second metering pump. The
chemical reaction occurs in a pipeline system. The pH-value is then
remeasured. A state-of-the-art digital industrial controller controls
the second metering pump with reference to this pH-value. The
neutralised solution flows into the product tank. A third manual
measurement of the pH-value in the product tank permits disposal of
solution with a neutral pH-value. The pH-value of the input solution can
be varied by manually adjusting the metering pump or by varying the
quantity of fresh water. This enables disturbances to be simulated. 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.
A process
control software is optionally available. The software permits the
construction of a complete networked system comprising multiple trainers
from the series. The key process variables can also be represented, and
control functions executed.
The well-structured instructional
material outlines the technological fundamentals and provides a
step-by-step guide through the experiments.
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