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28 Parameter
917 Coulometer
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221
User-defined parameters
These parameters are only accessible when Titration rate = user.
Dynamics
This parameter defines the control range before the specified endpoint.
Within the control range, the iodine is generated step by step, the genera-
tion is finely controlled. The closer the endpoint, the slower the iodine is
generated until the rate defined under Min. rate is reached. The larger
the control range, the slower the titration. Outside the control range,
iodine is being continuously generated, the rate is defined under Max.
rate.
The values that are actually measurable may vary from the values specified
here, depending on the hardware. The binding measurement value ranges
can be found in the manual, in the "Technical specifications" chapter.
Input range
0.1 - 1250.0 mV
Default value 70.0 mV
Selection off
Max. rate
Rate at which iodine is generated outside the control range.
Input range 1.5 - 2241.0 µg/min
Selection maximum
Default value maximum
Min. rate
Rate at which iodine is generated at the very beginning of the titration
and in the control range at the end of the titration. This parameter has a
vital influence on the titration rate and thus also on the accuracy. The
smaller the selected minimum rate, the slower the titration.
Input range 0.3 - 999.0 µg/min
Default value 15.0 µg/min
Table 9 Default values of the predefined titration rates for KFC
Titration rate
slow optimal fast
Dynamics 120.0 mV 70.0 mV 30.0 mV
Max. rate 1000.0 µg/min maximum maximum
Min. rate 0.3 µg/min 15.0 µg/min 30.0 µg/min
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