Metrohm tiamo 2.3 Patch 1 (process analysis) - Manual (Page 917)

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tiamo 2.3 Patch 1 (for Process Analysis) ￭￭￭￭￭￭￭￭ 901
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 mainly characterized by the
Max. rate. The parameters Max. Rate und Dynamics should be opti-
mized together in such a way that the titration does not overshoot too
much when the control point is reached. Dynamics 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 mainly characterized by the
Min. rate.
5.6.3.8.7.5 STAT U - Titration parameters
Tab: Method ▶ STAT U ▶ Properties... ▶ Titration parameters
Command name
Name of the command.
Input 25 characters
Parameters defining the run of the titration.
Titration direction
Selection of the titration direction. If two endpoints are set, then the titra-
tion direction is already established and the following selection of titra-
tion direction is ignored.
Selection + | - | auto
Default value auto
+
positive measured value alteration