ABB ACF5000 User Manual

152 ACF5000 FTIR ANALYZER SYSTEM | OI/ACF5000-EN REV. A
Connecting gas paths and inserting validation cells
Function
The gas path in the analyzer system can be connected manually, e.g. to emit
test gases.
The menu can be exited without waiting for the purge times and any neces-
sary changeover of the measuring model.
When a gas path is activated, the status signal "Maintenance mode" is set;
the status signal is reset as soon as the purge time is completed after the
sample gas has been switched on.
Menu path
Menu → Service/Test → System → Manual gas path
Display
Procedure
Gas path Explanation
Zero gas
If the analyzer system is permanently switched to the zero air gas path, the
air purifier may overload. The air purifier is circumvented with a bypass valve
after 12 hours of permanent operation. This means that the instrument air
offered directly in the analyzer system is used as zero air. The bypass can be
deactivated by switching to measuring gas or another gas path. The activa-
tion of the bypass valve is displayed in the measurement screen and as a
status message (no. 2535) and noted in the logbook.
Drift port 1-3
The gas paths are used to feed in test gases for the "Automatic Drift Check"
(ADC, see page 83).
AAC cell 1-5
The gas paths are used to retract the validation cells for the "Automatic Ad-
justment Check" (AAC, see page 78).
NOTICE: Selecting a validation cell not only inserts the cell but also switches
to zero air. The verification of the validation cells must also be activated in
the FTIR analyzer (this can take several minutes). As this is a service menu,
the menu does not wait for this activation.
Function Explanation
BACK PURGE
By pressing the softkey, a back-purging of the gas collection probe is started
(see page 159).
PATH LOCAL
PATH PROBE
Pressing one of these softkeys sets the gas path valve to measuring mode
ready to emit gas manually. Each time a softkey is pressed, it activates the
relevant path. This setting is permanently stored (backup configuration).

ABB ACF5000 Specifications

General

Brand	ABB
Model	ACF5000
Category	Measuring Instruments
Language	English