Metrohm 750 Autosampler User Manual

Page 30

3.4 Manual injection

750 Autosampler

MANUAL INJECTION

Needle Depth POS4

Needle depth
Entry of the position to which the transfer needle is lowered at the

injection of the sample. The positions correspond to the following

displacement volumes (see also section 1.2):

POS1

310

POS3

590

POS2

450

POS4

730

If sample vessels closed with 6.2743.030 filter stoppers are used then

immersion depth "

POS4

" must not be selected..

MANUAL INJECTION

Run Injection

Run injection
After confirmation with the injection valve is switched

to the "FILL" position, the transfer needle is moved to the given

sample vial and lowered to the selected position. When the sam-

ple loop has been filled the injection valve is returned to the

"INJECT" position. The following display appears while the injec-

tion is being carried out automatically:

MANUAL INJECTION
Vial # N
Needle Depth POS M
SAMPLE INJECTED

Manual injection running
The given sample position number N and the selected nee-

dle depth position M are displayed. When the valve has

switched to the "INJECT" position "

SAMPLE INJECTED

" is addi-

tionally shown in the bottom line for a short time, after which

the following display appears:

MANUAL INJECTION
COMPLETED

Manual injection completed
When the injection has been completed the transfer needle

remains in the sample vial. Further injections can now be

started from the same sample vial, for which a new immer-

sion depth must be selected.