￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
4 Installation
899 Coulometer
￭￭￭￭￭￭￭￭
15
6
Connect the tubing for the aspiration of the titration cell at the lower
connector of the addition and aspiration tube (6).
Details regarding how to connect the addition tubing and the aspiration
tubing can be found in the manual for the
803 Ti Stand
.
4.2.4
Using the titration cell with a Karl Fischer oven
When samples release their water only slowly or only at higher tempera-
tures, the oven method is used. The sample is heated in a KF oven (e.g.
860 KF Thermoprep
) and the water that is released is transferred to the
titration cell with a carrier gas. You will find recommended parameter set-
tings for determinations with a Karl Fischer oven in the appendix of the
more detailed manual.
A detailed description of how to set up the titration cell with the KF oven
can be found in the respective manual.
4.2.5
Using the titration cell with a sample changer
If a large number of samples have to be processed, the determination of
the water content can be automated with the aid of a sample changer
with oven module (e.g.
885 Compact Oven SC
). You will find recommen-
ded parameter settings for determinations with a Karl Fischer oven in the
appendix of the more detailed manual.
A detailed description of how to set up the titration cell with the sample
changer can be found in the respective manual.
4.3
Connecting the coulometer to the power supply
You can supply the 899 Coulometer with electricity in two different ways:
￭
Connect the coulometer directly to the power supply with the aid of
the power supply unit provided.
￭
Connect the coulometer to the 6.2164.500 Power Box if no stable
power supply is available.
4.3.1
Connecting the power supply unit
The 899 Coulometer has an external power supply unit for a 24 V power
supply (DC). This is connected to the power socket of the coulometer.
WARNING
An incorrect supply voltage can damage the instrument.
Operate the instrument only with the supply voltage specified for it. Use
the supplied power supply unit exclusively.
