150 ACF5000 FTIR ANALYZER SYSTEM | OI/ACF5000-EN REV. A
Emergency purging
Automatically switching to emergency purging
As soon as one of the temperatures in the analyzer box AU2 (except for the
injector air heating) or in the measurement gas sampling unit falls below the
120°C limit value, the analyzer system automatically switches to emergency
purging, i.e. zero air is piped via the purge gas line to the sampling probe.
Message
If the analyzer system is switched to emergency purging, this is displayed on
the measurement screen and as a status message (no. 2527).
Ending emergency purging manually
Once all temperatures have risen above the threshold, emergency purging
must be ended manually in order to return to measuring mode. To assess
whether emergency purging can be ended, the temperatures are
re-measured every 30 seconds.
Menu path
Menu → Service/Test → System → Emergency purging
Once all temperatures are above the threshold, emergency purging can be
ended by pressing the END EMERGENCY PURGING softkey. Emergency
purging cannot be ended if one temperature remains too low.
External trigger of the emergency purging
If a digital I/O module is installed with the ACF5000 cabinet status, the
emergency purging can also be triggered externally via the digital input 4.
The digital input has an inverted design, i.e. no signal on the input results in
an emergency purging.
The temperatures are reassessed every 30 seconds; for that reason, an
emergency purging triggered externally can be delayed by a maximum of
about 45 seconds.
To Next Page
Loading...
Need help?
General
