Metrohm tiamo 2.4 (process analysis) - Manual (Page 877)

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5 Method
tiamo 2.4 (for Process Analysis)
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Troubleshooting
Problem Remedy
The control point is not main-
tained well. The measured value is
at times too high and at times too
low. The controller "oscillates". ￭ Reduce the Max. rate and
possibly also the Min. rate.
￭ Set the Dynamics higher.
￭ Check if stirring is effective.
￭ Arrange the electrode and
buret tip to an optimum.
￭ Possibly use an exchange/dos-
ing unit with a smaller cylinder
volume (smaller volume incre-
ment per pulse).
The control point is not reached
for too long. ￭ Set the Dynamics lower.
￭ Increase the Min. rate.
￭ Increase the Max. rate.
The control range is not reached
quickly enough. Set the setpoint value with a SET
pretitration in such a way that the
control range is reached more
quickly.
Commands
Depending on the measured value one of the following two STAT com-
mands can be selected: