Xylem TitroLine 7000 Manual De Instrucciones página 188

188
4.6.5.6 Pretitration
If the titration agent consumption is roughly known, you can set a pretitration volume. In this process, a defined
volume is dosed (= pretitrated) following the initial waiting time. After the addition of the pretitration volume,
another defined span of time is observed as the waiting time before the next titration step is added.
The pretitration volume is automatically added to the titration agent consumption. The pretitration volume can be
set from 0.000 and 99.999 ml, the possible range for setting the waiting time following pretitration is between
0 and 999 seconds (Fig. 134).
Fig. 134
4.6.5.7 Titration end
The end of a titration (Fig. 135) is reached, and the result will be calculated as soon as, if

the defined «End value» pH, mV µA value has been reached

the criteria (steep, flat, «slope value») have been met for one turning point (EQ1)
or two turning points (EQ2) in the case of a linear or dynamic titration

the predefined value ml has been reached («Maximum titration volume»)

or if the titration was terminated manually by operating the <Stop> key.
Fig. 135
It is also possible to switch off the criteria for the end value for pH and mV (Fig. 136).
This value cannot be switched off in the case of a µA (Dead Stop) titration!
The possible pH end value input ranges from 0.000 to 14.000.
The possible mV end value ranges from - 2000 to + 2000.
The range of the µA input can be selected between 0.0 and 100.0.