Metrohm 899 Coulometer - Manual (Page 89)

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7 Parameters
899 Coulometer
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If, for example, the parameter Endpoint at is set to 50 mV and the para-
meter Delay time defined here is 10 s, then the voltage at the indicator
electrode must be between 55 mV and 48 mV for 10 seconds so that the
titration would be canceled.
Input range 0 ... 999 s
Default value 10 s
Relative stop drift
This parameter can only be edited with Stop criterion = rel. drift.
The titration is canceled when the endpoint and the sum of the drift at the
start of the titration and the relative stop drift have been reached.
Input range 1 ... 999 µg/min
Default value 5 µg/min
7.1.4 Titration parameters
Menu ▶ Parameters ▶ Titration parameters
Under Titration parameters, the parameters influencing the sequence
of the entire titration are defined.
Extraction time
Minimum duration of the titration. The titration will not be canceled dur-
ing the extraction time, even if the endpoint has already been reached.
The titration is however canceled if a stop condition is fulfilled during this
time (see Chapter 7.1.5, page 81). The entering of an extraction time is
e.g. recommended with samples that release water slowly or if a Karl
Fischer oven is used.
Input range 0 ... 999999 s
Default value 0 s
Generator electr.
Type of generator electrode.
Selection with diaphr. | w/o diaphr.
Default value w/o diaphr.
with diaphr.
Generator electrode with diaphragm.
w/o diaphr.
Generator electrode without diaphragm.
Generator current
Polarization current at the generator electrode.