Metrohm TitrIC 1 - Manual (Page 7)

Application Bulletin 285 e
Installation Instructions of TitrIC 1
Page 7/16
4 Tubing connections
4.1 External cell
The numbers given here (
,…
) and «opening 1,...» refer to the drawing below.
In the next step the external cell is prepared. The following components are inserted in the titration
vessel lid (6.1414.060):
The small 6.2730.030 stoppers (with the black rubber ring) are screwed loosely into openings 1, 2, 3, 5
and 7 and fixed in position when the buret tips, etc. are inserted.
The large 6.2730.080 stopper will be screwed into opening 9, the septum stopper (6.2730.020) without
the upper part into opening 6 and the screw nipples (6.2730.070) into openings 4, 6 and 8.
The titration vessel lid is attached to the stand support (6.2001.070) using opening 10, fixed at the
required height with the clamping ring and the horizontal brace of the stand support is mounted on the
815 with the socket head screw.
1 2
4
5
6
7
9
3
10
8
septum stopper
6.2730.020
screw nipple
6.2730.070
6.2730.080
screw nipple
stopper
6.2740.020
rinsing nozzle
3-way stopper
6.21543.210
6.2730.030
Numbers and connections on the titration vessel lid (6.1414.060)
The M8 PTFE aspiration tip (6.1543.170, supplied with 815) is inserted in opening 1 and
connected to membrane pump 2 of the 815 with the M8 PTFE tubing (6.1805.510).
The rinsing nozzle (6.2740.020, supplied with 815) is inserted into opening 2, which is
connected to membrane pump 1 of the 815 with the FEP tubing (6.1805.060, supp. with 815).
The buret tip (6.1543.200, supplied with 807) is inserted through opening 3 and will be
connected to the connection set (6.5620.000, see next page), port 4 of the 50 mL Dosing Unit
(LQH) with the 60 cm FEP tubing connection (6.1805.060, supplied with 815).
This is where the pH electrode will later be inserted.
The rinsing nozzle (6.2740.020, supplied with 815) is inserted into opening 5, which is
connected to membrane pump 1 of the 815 with the FEP tubing connection (6.1805.060).
The septum stopper (6.2730.020) (without upper screw and septum) and the screw nipple
(6.2730.070) are pushed/screwed into opening 6. Then the 3-way stopper (6.1543.210) is
inserted. The 3 connectors are connected to port 1 of the three Dosing Units 10 mL (EDTA),
20 mL (Auxiliary complexing solution) and 20 mL (0.1 M HCl) with three 40 cm FEP tubing
connections (6.1805.100, supplied with 807 Dosing Units).
The rinsing nozzle (6.2740.020, supplied with 815) is inserted into opening 7, which is
connected to membrane pump 1 of the 815 with the FEP tubing connection (6.1805.060).
This is where the Ca-ISE (6.0508.110) will later be inserted.
This is where the 802 Rod Stirrer will later be inserted.