Dionex ICS-3000 - Page 115

TC Description
Doc. 065031-04 1/08 99
• In the Inject position, sample is swept to the column for analysis.
Eluent flows from the pump, through the sample loop, and on to the
column, carrying the contents of the sample loop with it. Section 5.2
describes how to inject samples.
The 10-port injection valve has two operating positions: 10_1 and 1_2.
Liquid flows through the path between either ports 10 and 1 or ports 1 and
2, depending on the valve position.
Figure 2-56
shows example flow schematics for the 10-port valve when it
is connected for an application that uses a concentrator column.
• In the 10_1 position, sample flows from the syringe or autosampler
line, through the valve, and into the sample loop. Excess sample
flows out to waste. Eluent flows from the eluent pump, through the
valve, through the concentrator column, and to the separator column.
If sample was previously loaded onto the concentrator column, it is
swept to the separator column for analysis.
• In the 1_2 position, carrier liquid flows through the sample loop and
on to the concentrator column, carrying the contents of the sample
Figure 2-56. TC Injection Valve Flow Schematics (10-Port Valve)
Example Connections: Large Loop to Concentrator
1
3
5
7
9
10_1 P
OS
ITI
O
N
(Loop Loading)
To Waste
Eluent
Pump In
To Column
Sample In
To Waste
Concentrator
Large
Loop
Carrier Pump In
1_2 P
OS
ITI
O
N
(Concentrator Loading)
To Waste
Eluent
Pump In
To Colum
n
Sample In
To Waste
Concentrator
Carrier Pump In
= Sample
= Carrier
= Eluent
Large
Loop
2
4
6
8
10
1
3
5
7
9
2
4
6
8
10