Thermo Scientific Dionex ICS-5000, Руководство оператора

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2 • DC Description
Doc. 065342-06 12/11
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2.13.2 6-Port Valve
The 6-port valve (P/N 061961) is the standard injection valve for analytical IC
systems. It is installed in the lower compartment of the DC (see
Figure 2-21 ).
Figure 2-25 shows flow schematics for the 6-port valve.
•
In the Load position, sample flows from the syringe or autosampler line
(if installed), through the valve, and into the sample loop, where it is held
until injection. Excess sample flows out to waste. Eluent flows from the
pump, through the valve, and to the column, bypassing the sample loop.
•
In the Inject position, eluent flows from the pump, through the sample
loop, and on to the column, carrying the contents of the sample loop with
it.
Section 5.3.1 describes how to inject samples with an autosampler and
Section 5.3.2 describes how to inject samples manually.
A 10

L PEEK sample loop (P/N 042949) is installed between ports L (1) and
L (4). Thermo Fisher Scientific offers sample loops in various sizes. If
needed, the pre-installed 10

L loop can be replaced with a loop that has a
different sample injection volume.
Figure 2-25. Injection Valve Flow Schematics (6-Port Valve)
LOAD POSITION INJECT POSITION
= Sample
= Eluent
To
Waste
Sample In
To
Column
From Pump
S
W
6
5
2
3
Sample
Loop
1
4
To
Waste
Sample In
To
Column
From Pump
S
W
6
5
2
3
Sample
Loop
1
4
L
L
L
L