Metrohm 882 Compact IC plus – Anion – MCS - Manual (Page 46)

3.12 Injection valve
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882 Compact IC plus – Anion – MCS
The pulsation absorber protects the separation column from damage
caused by pressure fluctuations when switching the injection valve, and
reduces interfering pulsations during highly sensitive measurements. In
order to ensure these functionalities, it must be connected between the
high pressure pump (see Chapter 3.9, page 29) and injection valve (see
Chapter 3.12, page 36).
The pulsation absorber can be operated in both directions.
1
2
3
3
4
5
6
Figure 17 Pulsation absorber – Connection
1 Connection capillary
Connection to the inline filter. 2 Fastening screws
3 PEEK pressure screws, short
(6.2744.070) 4 Holder for pulsation absorber
5 Pulsation absorber (6.2620.150) 6 Connection capillary
Connection to the injection valve.
3.12 Injection valve
The injection valve connects the eluent and sample path. Through rapid
and precise valve switchover a precise amount of sample solution defined
by the size of the sample loop is injected and rinsed with eluent onto the
separation column.
3.12.1 Connecting the injection valve
The injection valve has six connectors: two for the sample path (connec-
tors 1 and 2), two for the eluent path (connectors 4 and 5) and two for
the sample loop (connectors 3 and 6).