Metrohm 916 Ti-Touch - Manual (Page 364)

28.8 Evaluations (EVAL)
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916 Ti-Touch
Evaluation
Selection whether the minimum or the maximum of the titration curve is
being evaluated. With a command either the minimum or the maximum
can be evaluated. If both values are needed, a second command has to be
defined in the method.
Selection Minimum | Maximum
Default value Maximum
Threshold value
The evaluation of the minimum or maximum begins as soon as the slope
of the curve exceeds the set threshold value. Use a lower threshold value
if the minimum or maximum is not found.
Measuring mode pH:
Input range
0.1 - 20
Default value 1.0
With titrations, the unit is pH/mL, with measure-
ments pH/s.
Measuring mode U, Ipol:
Input range
1.0 - 2000.0
Default value 25.0
With titrations the unit is mV/mL, with measure-
ments mV/s.
Measuring mode Upol:
Input range
0.5 - 10.0
Default value 5.0
With titrations the unit is µA/mL, with measure-
ments µA/s.
Measuring mode T:
Input range
0.1 - 20.0 °C/s
Default value 1.0 °C/s
28.8.4 Break point evaluation (EVAL BREAK)
A break point evaluation is used to determine sharp changes of direction
in the titration curve. This evaluation is primarily used for photometric and
conductivity titrations. The method is based on the search for extremes in
the second derivative of the curve.