Metrohm tiamo 2.4 Manual User Manual
Page 852
5.6 Commands
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836
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tiamo 2.4
756, 831
Input range
1.0 - 2000 mV
Default value
120.0 (slow), 70.0 (optimal), 30.0 (fast) mV
851, 852
Input range
0.1 - 1250.0 mV
Default value
120.0 (slow), 70.0 (optimal), 30.0 (fast) mV
The diagram shows KF titration curves at different polarization currents. It
is clear to see that the position of the endpoint varies with the polarization
current. The curves have different slopes, i.e. dynamics must also be adap-
ted. Polarization currents smaller than 10 µA are not suitable for this appli-
cation. The following table gives an idea of the optimal control parame-
ters for various polarization currents.
Ipol
10 µA
20 µA
30 µA
EP
50 mV
100 mV
150 mV
Control range
70 mV
100 mV
120 mV
Max. rate
Maximum rate with which iodine is generated outside the Control
range.
Input range
1.5 - 2240.0 µg/min
Default value
1000.0 (slow), maximal (optimal), maximal
(fast) µg/min