Metrohm 750 Autosampler - Manual (Page 26)

3.2 System settings
750 Autosampler
23
3.2 System settings
SYSTEM
4
By pressing the <SYSTEM> key (<FUNCTION> + <4>) the system
settings menu appears. The system settings are global parameters
which affect the operation of the Autosampler, but are not required to
be programmed for each sample or method. The following screen
results:
SYSTEM SETTINGS
Park Needle
Contact Closures
Loop Size
Needle Setup
Key Beep
Time/Date
Injection Valve
Exit
Status System settings
Park transfer needle in home position
Enter contact closure times
Specify injection loop
Specify needle settings
On/off switching of the audible beep
Set date/time
without function for 750 Autosampler
Return to standby mode
Status display
The individual menu points are selected by pressing the <
б б
> and
<
в в
> keys. The individual inquiries of a menu point are accessed using
the <ENTER> key and exited by pressing simultaneously the
<FUNCTION> + <CLEAR> keys. The following listings show all dia-
log items which appear under <SYSTEM>. The values shown in the
displays are the default values, the possible entry values or ranges are
shown below the display.
SYSTEM SETTINGS
à Park Needle
Park transfer needle in home position
After confirmation of this command with <ENTER> the transfer
needle is moved to the left rear of the instrument to provide easy
access to the sample rack.
SYSTEM SETTINGS
à Contact Closures
Contact closure times
On the 750 Autosampler there is the possibility of producing four
signals in the form of a contact closure on contact closure strip 10 10
for controlling external instruments:
Injection Automatic contact closure at output "START" for every
injection triggered by the Autosampler.
Event 1
Contact closure after a time laid down in the method
at output "T1".
Event 2 Contact closure after a time laid down in the method
at output "T2".
Event 3 Contact closure after a time laid down in the method
at output "T3".
Both signals are produced not only as "normal open" (between
outputs NO – COM) but also as "normal closed" (between outputs
NC – COM).
Entry of <ENTER> opens the following menu: