Metrohm 743 Rancimat - Manual (Page 75)

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743 Rancimat ￭￭￭￭￭￭￭￭ 67
2nd derivative
Time
Conductivity
Induction time
End Start
Evaluation
suppression Evaluation
delay
With certain samples, it may occur that the conductivity rises in steps, to a
small degree, long before the actual induction time (e.g. through side
reactions or with volatile compounds). To prevent this rise being evaluated
as an endpoint, the user can delay the evaluation or suppress it for a cer-
tain range.
Stability time
The stability time is the time which is necessary in order to attain a speci-
fied conductivity change Delta Kappa.
Stability time
Time
Delta
Kappa
Conductivity
The entry of an evaluation delay or evaluation suppression does not have
any effect on this evaluation mode. In all cases the time from the start
point of the measurement is calculated.
4.5.2.3 "Curves" tab
The scaling of the x and y axis can be defined here. The settings have an
effect on the expression of the curves, but not on the measurement and
evaluation. After completing the determination, the scaling for single and
live graphs can be changed again in the determination overview.