Metrohm 788 IC Filtration Sample Processor - Manual (Page 40)

2 Installation
788 IC Filtration Sample Processor
32
B) Separation with simultaneous dialysis of the next sample
The following time program descriptions are based on chromatogram
times of 20 minutes. Approx. 10 minutes before end of each separation
the dialysis of the next sample is started. For this purpose, the 788
program in the system dialysis.smt contains a waiting time of 540 s in
line 006 (see below). These values have to be adapted, if necessary.
A main time program for the 788 IC Filtration Sample Processor is
needed, which controls the both the injection of a dialyzed sample as
well as the dialysis of the following sample: ('dialysis.smt').
The processing of the first and last sample of a queue requires time
programs in additional system files. The 788 program in the system file
'start-dialysis.smt' just starts the dialysis of the first sample. 'end-
dialysis.smt' is used to inject the acceptor solution of the last sample.
dialysis.smt
1. Definition of new program parameters for the 788 IC Filtration
Sample Processor under Configuration/Control:
PUMP 754 on = ---****1******
PUMP 754 off = ---****0******
2. Program for the 788 IC Filtration Sample Processor:
001 Ctrl FILL A 1
002 Ctrl INJECT B 1
003 Wait 30 s
004 Ctrl INJECT A 1
005 Ctrl PUMP 754 off
006 Wait 540 s
007 Move sample+1
008 Lift work
009
Ctrl PUMP 754 on
010 Wait 120 s
011 Ctrl FILL B 1 / STEP
012 Wait 540 s
013 Ctrl STEP MSM 753
014 Ctrl ZERO 1
015 Wait 60 s
 Switch injection valve A at 733 to "Fill"
 Transfer acceptor solution to sample loop
 Fill sample loop with acceptor solution for 30 s
 Switch injection valve A at 733 to "Inject"
 Stop 754 Pump Unit
 Wait: 540 s
 Move needle to sample position (+1)
 Place lift with needle to working position
 Start 754 Pump Unit
 Rinse dialysis cell with sample solution
 Stop of acceptor solution
 Dialysis time
 Switch 753 suppressor module to next position
 Trigger autozero at 732 IC Detector
 Additional dialysis time (total 600 s)
start-dialysis.smt
3. Save the system file 'dialysis.smt' with a new name 'start-
dialysis.smt'.
4. Remove the data recorder by clicking on the recorder icon with the
right mouse button an selecting 'unlink'