29.1 Dynamic equivalence point titrations (DET)
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900 Touch Control
measurement = automatic or continuous is defined (see sensor dialog
of the command). This value is used for temperature correction in pH
measurements.
Input range –20.0 to 150.0 °C
Default value 25.0 °C
User-defined parameters
These parameters are only accessible when Titration rate = user.
Meas. point density
A small value means small volume increments, i.e. a high measuring point
density. The curve then shows all the finest details which also include
noise; this could cause unwanted equivalence points to be found. A larger
value, i.e. a smaller measuring point density, permits quicker titrations. If
you are using a dosing device with a small cylinder volume then a smaller
measuring point density value may be beneficial. However, you should
also set a smaller signal drift and a higher EP criterion at the same time.
Input range 0 to 9
Default value 4
Min. increment
This smallest permitted volume increment is added at the start of the titra-
tion and with steep curves in the region of the equivalence point. Very
small values should only be used if a low titrant consumption is expected;
otherwise unwanted equivalence points could be evaluated.
Input range 0.05 to 999.90 µL
Default value 10.00 µL
Max. increment
A maximum volume increment should be selected in the following cases:
￭ when titration consumption is very low up until the equivalence point
is reached.
￭ when a start volume is dosed up until shortly before the equivalence
point is reached.
￭ when the change of direction in the jumping range is very abrupt,
because otherwise it could easily happen that an excessively large vol-
ume will be dosed in the region of the equivalence point.
The value should not be less than 1/100 cylinder volume.
Input range 0.1 to 9999.9 µL
Selection off
Default value off
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