GE AKTA avant User Manual page 81

Ports and flow paths of the pH
valve
The illustration and table below describe the different ports of and flow paths through
the pH valve, in this example labeled V9-pH.
Port
In
ToR
FrR
Out
Cal
W3
Flow path
By-pass
Restrictor
ÄKTA avant User Manual 29035184 AE
By-pass
Description
From Conductivity monitor
To Flow restrictor
From Flow restrictor
To Outlet valve
Calibration port
To Waste
Description
Both pH electrode and flow restrictor are by-passed.
Flow restrictor is in use and pH electrode is by-passed.
3 Standard instrument modules
3.9 pH valve and pH monitor
Primary flow path
Flow path for calibrations
Closed flow path
81