Metrohm 756 KF Coulometer - Manual (Page 122)

6.1 Coulometer setup
756/831 KF Coulometer, Instructions for Use 114
6.1.3 Titration vessel setup with Ti Stand
1. Attach titration vessel with holder to the support rod.
2. Place stirring bar in titration vessel.
3. Cut 6.2713.XXX ground joint sleeves to the correct length and use for all the joints of
the inserts 1) .
4. Insert indicator electrode in the left-hand joint opening, screw on 6.2104.020 electrode
cable and plug it into the "Ind.El" socket of the Coulometer.
5. Insert generator electrode in the central joint opening, screw on 6.2104.120 electrode
cable and plug it into the "Gen.El" socket of the Coulometer.
6. Fill the drying tube with molecular sieve and insert into generator electrode.
7. Place septum in the screw cap and screw this onto the titration vessel. Only tighten it
enough to ensure that it is tight. (The septum should not be deformed!)
8. Insert 6.1439.010 feed/aspiration tube (order separately) in the last joint opening and
connect the aspiration and feed tubing of the Ti-Stand. Close the top of the tube with a
glass stopper.
1) When cutting the ground joint sleeves take care that no rough edges are formed. The
ground joint sleeves must not project beyond the lower edge of the joint.
If no ground joint sleeves are used then the joints must be greased. In this case the
joints must be checked periodically and re-greased while otherwise problems with
blocked joints could occur.
Drying tube
Generator electrode
Indicator electrode
Septum stopper
Feed/aspiration tube
Inlet
Outlet