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Metrohm tiamo 2.2 Manual User Manual

Page 473

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5 Method

tiamo 2.2

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459

Threshold value

The evaluation of the minimum begins as soon as the slope of the curve
exceeds the set threshold value.

Range

0.1 ... 20.0 pH/mL

Default value

1.0 pH/mL

Break-point evaluation

Note

This evaluation method is possible only with Titrando and 855.

Break-point evaluation

on | off (Default value: off)

A break-point evaluation is used to determine sharp changes of direction in
the titration curve.

EP criterion

Measure of the minimum sharpness of the break-point. The smaller the EP
criterion set, the more break-points will be found. As this is a relative value
related to the total measured value alteration, even small changes in the
measured value can be evaluated as a break-point for a small measured value
range.

Range

0 ... 1.0

Default value

0.3

Slope

Minimum difference between the slope before and after the break-point.
The smaller the difference, the more break-points will be found.

Range

0.0 ... 10.0

Default value

0.9

Smoothing factor

The higher the smoothing factor, the fewer break-points will be found.

Range

2 ... 20

Default value

5

Window

A range (window) can be defined on the measured value axis, on the volume
axis or on the time axis. The break-point evaluation will only be carried out