3 • Operation and Maintenance
Doc. 065051-03 1/08 87
Figure 3-26. Sequential, Full-Loop Injection Sequence
NOTE Partial-loop and partial-loop, limited-sample injections
can also be performed in sequential mode. The
sequences of events for these injection types are the
same as for normal mode, except for selection of the
diverter valve position.
Sample
Syringe
1. Draw air
3. Draw air again to
isolate the sample
4. Prepare to load sample
(excess sample used). Diverter
valve selects inject valve #1 or #2.
KEY
Eluent
LOAD
Pump
Column
6. Inject sample onto column
Empty syringe (remaining
sample + air bubble)
INJECT
Pump
Column
1
2
3
4
5
6
Waste Waste
Flush
2. Draw sample (at
least 4X loop volume)
5. Deliver sample
to the loop (excess
sample sent to waste)
INJECT
Pump
Column
L
P
C
L
S
W
Inject Valve #1
Inject Valve #2
Waste
1
S
2
PP
P
INJECT
Pump
Column
L
P
C
L
S
W
Waste
1
S
2
PP
P
L
P
C
L
S
W
To Inject
Valve #2
1
S
2
PP
P
To Inject
Valve #2
Inject Valve #1
Inject Valve #1
Unselected ValveAir
Sample
Diverter Valve
Sample
Air
Flush
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