Owner manual

3.10 Connection of 700 Dosinos
746 VA Trace Analyzer / 747 VA Stand
3-41
3.10 Connection of 700 Dosinos
Up to four 700 Dosinos can be attached to the 746 VA Trace Analyzer for the auto-
matic addition of standard and auxiliary solutions. The 700 Dosino and the Dosing
Units needed for the addition have the following ordering designations (see also
section 9.5):
• • 2.700.0010 Dosino
• • 6.3030.XXX Dosing unit, with ETFE burette cylinder
6.3030.120 cylinder volume V = 2 mL
6.3030.150 cylinder volume V = 5 mL
6.3030.210 cylinder volume V = 10 mL
6.3030.220 cylinder volume V = 20 mL
6.3030.250 cylinder volume V = 50 mL
The choice of Dosing unit depends on the volume of liquid the Dosino should dis-
pense. A burette volume of 2 or 5 mL is recommended for additions in the µL range
(standard additions solutions), a burette volume of 10 mL or higher is recom-
mended for additions in the mL range (auxiliary solutions).
This section describes the connection procedure; further details can be found in the
700 Instructions for Use of the 700 Dosino.
3.10.1 Electrical connection
Before a Dosino is attached to the 746 VA Trace Analyzer, the 746 VA
Trace Analyzer must be switched off using the mains switch 1111.
Connecting a 700 Dosino to the 746 VA Trace Analyzer when the latter
is switched on can lead to destruction of the Dosino!
The 700 Dosino is connected with its cable to the appropriate socket "Dos 1...4" (1818
... 2121) of the 746 VA Trace Analyzer (see Fig. 21). Maximum 4 Dosinos can be at-
tached in this manner.
For settings (dosing rate, filling rate, etc.) and manual operation (manual filling or
dispensing) of the 700 Dosino, dialog page "DOSIMATS" must be selected (see
section 5.3.3).
700
0
I
Control Lines
Printer
External Bus
Dos. 1
Dos. 2
Dos. 3
Dos. 4
RS 232 Interface 1
RS 232 Interface 2
Reset
2A(TH)
115V 230V
230V
746
Fig. 21: Connection of 700 Dosinos to 746 VA Trace Analyzer
Cable of 700 Dosino