Metrohm tiamo 2.2 (ProcessLab) - Manual (Page 865)

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ 5 Method
tiamo 2.2 (ProcessLab) ￭￭￭￭￭￭￭￭ 849
point for parameterization: Max. rate in mL/min = 0.005 • Expected rate
of reaction in µL/min.
Titrando, 855
Range
0.01 ... 166.00 mL/min
Default value 0.25 (50 µL/min), 0.75 (100 µL/min), 2.00 (500
µL/min) mL/min
Titrino
Range
0.01 ... 150.00 mL/min
Default value 0.25 (50 µL/min), 0.75 (100 µL/min), 2.00 (500
µL/min) mL/min
Min. rate
Rate at which dosing is carried out at the very beginning of the titration and
in the Control range at the end of the titration. The smaller the selected
minimum rate, the longer it takes until the control point is reached for the
first time. The following rule of thumb should be observed for maintaining
the Min. rate in order to achieve as constant (regular) a dosing at the control
point as possible: Min. rate in µL/min = expected reaction rate in µL/min/
10.
Range 0.01 ... 9999.00 µL/min
Default value 10.00 (50 µL/min), 20.00 (100 µL/min), 40.00
(500 µL/min) µL/min
Note
Outside the control range, the dosing rate is determined mainly by the
Max. rate. The parameters Max. rate and Control range should be
optimized together in such a way that the titration does not overshoot
too much when the control point is reached. The Control range should
be selected in such a way that the measured value remains within this
range when dosing stops. A slightly larger control range should be defined
for slow reactions (e. g. U = 180 mV). The nominal value is often set with
a SET pretitration before the substrate is added. This means that the STAT
titration can be started with a small deviation from the control point.
Within the control range, the dosing rate is determined primarily by the
Min. rate.