Teledyne API T802 Paramagnetic O
2
Analyzer Operation Manual
109
5.10. SETUP MORE ALRM: USING THE GAS
CONCENTRATION ALARMS (OPTION 61)
The T802 includes two O
2
concentration alarms. Each alarm has a user settable
limit, and is associated with an opto-isolated TTL relay accessible via the status
output connector on the instrument’s back panel (See Section 3.3.1.5). If the O
2
concentration measured by the instrument rises above that limit, the alarm‘s
status output relay is closed.
The default settings for ALM1 and ALM2 are:
Table 5-9: O
2
Concentration Alarm Default Settings
ALARM STATUS LIMIT SET POINT
1
O2 ALARM1 Disabled 10.00 %
O2 ALARM2 Disabled 30.0 %
CO2 ALARM1
1
Disabled 5.000 %
1
CO2 ALARM2
1
Disabled 10.00 %
1
1
Only available if the optional CO
2
sensor is installed.
Note
To prevent the concentration alarms from activating during span calibration
operations make sure to press CAL button prior to introducing span gas into
the analyzer..
