Metrohm 788 IC Filtration Sample Processor User Manual

Page 59

3.5 "Tracing"

788 IC Filtration Sample Processor

HOLD

LEARN

x Press to access the LEARN mode. The blinking LEARN-

LED indicates that the 788 IC Filtration Sample Processor is ready to

execute the command.

x Now move the lift into the desired position with the <Ð> and <Ï>

keys. You will notice that the current lift position is always indicated

"live". During execution of the command the LEARN-LED is lit con-

tinuously. Accept the lift position that has been set by pressing

and thereby exit the LEARN mode. The LEARN LED

goes off again.

>sample sequence
4 CTL:Rm: FILL A 1

x In this line the injection valve at the 733 IC Separation Center is

switched to the "Fill" position.

HOLD

LEARN

HOLD

LEARN

>sample sequence
5 PUMP 1.1 : 240 s

x In this line the peristaltic pump at the 788 IC Filtration Sample Proc-

essor is started in order to convey the sample from the sample tube

to the sample loop at the 733 IC Separation Center.

x Here, you can use the LEARN mode to optimize the pump time too.
x In this case, as with the other "teachable" commands (the LIFT

command is an exception), pressing the key causes

immediate execution of the corresponding command. The elapsed

time is also displayed here "live". By pressing the key

again the command can be interrupted.

x The blinking LED indicates that the 788 IC Filtration Sample Proces-

sor is still in the LEARN mode. If you now switch the pump back on

with the key, you will see that the "live" value (pump time)

is now added to the existing value.

x Now set the pump time in this way. Accept the total time with

and exit the LEARN mode in this way.

>sample sequence
6 CTL:Rm: ZERO 1

x In this line the autozero function at the 732 IC Detector is triggered.

>sample sequence
7 CTL:Rm: INJECT A 1

x In this line the injection valve at the 733 IC Separation Center is

switched to the "Inject" position.